1
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Cardwell N, Hensley AJR, Wang Y, McEwen JS. Capturing the Coverage Dependence of Aromatics' Adsorption through Mean-Field Models. J Phys Chem A 2023; 127:10693-10700. [PMID: 38059355 DOI: 10.1021/acs.jpca.3c05456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
To capture the dominant interactions (surface-mediated and through-space) in catalytic hydrodeoxygenation systems, coverage-dependent mean-field models of aromatic adsorption are developed on Pt(111) and Ru(0001). We derive three key insights from this work: (1) we can universally apply mean-field models to capture the coverage-dependent behavior of oxygenated aromatics on transition-metal surfaces, (2) we can deconvolute surface-mediated and through-space interactions from the mean-field model, and (3) we can develop relatively accurate models that predict the adsorption energy of aromatics on transition-metal surfaces for the full coverage range using the work function at the lowest modeled coverage. Our approach enables the rapid prediction of the coverage-dependent behavior of oxygenated aromatics on transition-metal surfaces, reducing the computational cost associated with these studies by an order of magnitude.
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Affiliation(s)
- Naseeha Cardwell
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Alyssa J R Hensley
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
- Department of Chemical Engineering & Materials Science, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Yong Wang
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Jean-Sabin McEwen
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164, United States
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Department of Biological Systems Engineering, Washington State University, Pullman, Washington 99164, United States
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2
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Koishybay A, Umhey C, Kuo CT, Groden K, McEwen JS, Karim AM, Shantz DF. Elucidating the Effect of Ion Exchange Protocol on the Copper Exchange Efficacy, Copper Siting, and SCR Activity in Cu-SSZ-13. Chemphyschem 2023; 24:e202300391. [PMID: 37400930 DOI: 10.1002/cphc.202300391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/05/2023]
Abstract
The front cover artwork is provided by Professor Jean-Sabin McEwen at Washington State University. The image shows how ion exchanges prepared with different copper precursors influence how the copper ultimately sites relative to the zeolite framework, which ultimately impacts its catalytic reactivity for the selective catalytic reduction (SCR) of NOx in Cu-SSZ-13. Read the full text of the Research Article at 10.1002/cphc.202300271.
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Affiliation(s)
- Aibolat Koishybay
- Department of Chemical and Biomolecular Engineering, Tulane University, 6823 St. Charles Avenue, New Orleans, LA, 70118, USA
| | - Charles Umhey
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA, 99164, USA
| | - Chun-Te Kuo
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, USA
| | - Kyle Groden
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA, 99164, USA
| | - Jean-Sabin McEwen
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA, 99164, USA
- Department of Physics and Astronomy, Washington State University, Pullman, WA, 99164, USA
- Department of Chemistry, Washington State University, Pullman, WA, 99163, USA
- Department of Biological Systems Engineering, Washington State University, Pullman, 99164, USA
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Ayman M Karim
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, USA
| | - Daniel F Shantz
- Department of Chemical and Biomolecular Engineering, Tulane University, 6823 St. Charles Avenue, New Orleans, LA, 70118, USA
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3
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Koishybay A, Umhey C, Kuo CT, Groden K, McEwen JS, Karim AM, Shantz DF. Elucidating the Effect of Ion Exchange Protocol on the Copper Exchange Efficacy, Copper Siting, and SCR activity in Cu-SSZ-13. Chemphyschem 2023:e202300271. [PMID: 37074735 DOI: 10.1002/cphc.202300271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 04/18/2023] [Accepted: 04/18/2023] [Indexed: 04/20/2023]
Abstract
The influence of the copper ion exchange protocol on SCR activity of SSZ-13 is quantified. Using the same parent SSZ-13 zeolite, four exchange protocols are used to assess how exchange protocol impact metal uptake and SCR activity. Large differences in the SCR activity, nearly 30 percentage points at 160 ºC at constant copper content, are observed for different exchange protocols implying that different exchange protocols lead to different copper species. Hydrogen temperature programmed reduction on selected samples and infrared spectroscopy of CO binding corroborates this conclusion as the reactivity at 160 ºC correlates with the intensity of the IR band at 2162 cm-1. DFT-based calculations show that such an IR assignment is consistent with CO adsorbed on a Cu(I) cation within an eight-membered ring. This work shows that SCR activity can be influenced by the ion exchange process even when different protocols lead to the same metal loading. Perhaps most interesting, a protocol used to generate Cu-MOR for methane to methanol studies led to the most active catalyst both on a unit mass or unit mole copper basis. This points to a yet not recognized means to tailor catalyst activity as the open literature is silent on this issue.
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Affiliation(s)
- Aibolat Koishybay
- Tulane University, Chemical and Biomolecular Engineering, UNITED STATES
| | - Charles Umhey
- Washington State University, School of Chemical Engineering and Bioeng, UNITED STATES
| | - Chun-Te Kuo
- Virginia Polytechnic Institute and State University, Chemical Engineering, UNITED STATES
| | - Kyle Groden
- Washington State University, School of Chemical Engineering and Bioengineering, UNITED STATES
| | - Jean-Sabin McEwen
- Washington State University, School of Chemical Engineering and Bioengineering, UNITED STATES
| | - Ayman M Karim
- Virginia Polytechnic Institute and State University, Chemical Engineering, UNITED STATES
| | - Daniel Francis Shantz
- Tulane University, Department of Chemical and Biomolecular Engineering, 323 Boggs Laboratory, LA 70118-5674, New Orleans, UNITED STATES
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4
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Tezel E, Whitten A, Yarema G, Denecke R, McEwen JS, Nikolla E. Electrochemical Reduction of CO 2 using Solid Oxide Electrolysis Cells: Insights into Catalysis by Nonstoichiometric Mixed Metal Oxides. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Elif Tezel
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, Michigan 48202, United States
| | - Ariel Whitten
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Genevieve Yarema
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, Michigan 48202, United States
| | - Reinhard Denecke
- Wilhelm-Ostwald Institute for Physical and Theoretical Chemistry, Leipzig University, Linnéstr. 2, 04103 Leipzig, Germany
| | - Jean-Sabin McEwen
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
- Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164, United States
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Department of Biological Systems Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Eranda Nikolla
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, Michigan 48202, United States
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
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5
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Ayiania M, Garcia A, Haghighi Mood S, McEwen JS, Garcia-Perez M. Novel Amorphous Carbons for the Adsorption of Phosphate: Part I. Elucidation of Chemical Structure of N-Metal-Doped Chars. ACS Omega 2022; 7:14490-14504. [PMID: 35557684 PMCID: PMC9088805 DOI: 10.1021/acsomega.1c05718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 03/17/2022] [Indexed: 06/15/2023]
Abstract
Due to phosphate's necessity in agriculture and its danger to the environment, the development of adsorbents for its removal has been the subject of intensive research activity. Although the introduction of nitrogen functionality to chars and modification of biochar with metals have proven to change the character of the char structure, making it more active toward nutrients, there is no study regarding the doping of biochar with metals and nitrogen simultaneously for the adsorption of phosphates. This paper is the first of two in which we report the production, characterization, and evaluation of N-metal-doped biochars from cellulose for phosphate removal from liquid effluents. In this part, we describe the production and characterization of N-Ca-, N-Fe-, and N-Mg-doped biochars. The elemental composition and surface area of each of the materials produced is reported. Elemental and surface characterization of the chars are reported with the largest N content appearing at a temperature of 800 °C (12.5 wt %) and a maximum surface area for biochar produced at 900 °C (1314 m2/g). All of the adsorbents were visualized by scanning electron microscope (SEM), confirming that although there are some crystals on the surface of the biochar produced, most of the N, Mg, and Ca are part of the polyaromatic ring structure. Transmission electron microscope (TEM) images clearly show the formation of nanoclusters with the metals in the case of N-Fe and N-Ca biochars. The N-Mg biochars show a uniform distribution of the Mg through the carbon surface. X-ray photoelectron spectroscopy (XPS) studies of the biochars produced with metals and varying nitrogen levels clearly show Mg and Ca peaks shifting their position in the presence of N, suggesting the formation of stable structures between metals and N in the carbon polyaromatic ring system. To elucidate the nature of these structures, we conducted DFT-based calculations on different configurations of the nitrogenated structures. The calculated binding energy shifts were found to closely match the XPS experimental binding energy, confirming the likelihood of these structures in biochar. Finally, based on our experimental and modeling results, we hypothesize that an important fraction of the Mg and Ca is introduced to these biochars at the edges. Another fraction of Mg and Ca is in the form of phthalocyanine-like internal structures. More experimental studies are needed to confirm the formation of these very interesting structures and their potential use as adsorbents or catalysts.
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Affiliation(s)
- Michael Ayiania
- Department
of Biological Systems Engineering, Washington
State University, Pullman, Washington 99164, United States
| | - Aidan Garcia
- Gene
and Linda Voiland School of Chemical Engineering and Bioengineering, Pullman, Washington 99164, United States
| | - Sohrab Haghighi Mood
- Department
of Biological Systems Engineering, Washington
State University, Pullman, Washington 99164, United States
| | - Jean-Sabin McEwen
- Department
of Biological Systems Engineering, Washington
State University, Pullman, Washington 99164, United States
- Gene
and Linda Voiland School of Chemical Engineering and Bioengineering, Pullman, Washington 99164, United States
- Department
of Physics and Astronomy, Washington State
University, Pullman, Washington 99164, United States
- Department
of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Institute
for Integrated Catalysis, Pacific Northwest
National Laboratory, Richland, Washington 99352, United States
| | - Manuel Garcia-Perez
- Department
of Biological Systems Engineering, Washington
State University, Pullman, Washington 99164, United States
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6
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Zeng Z, Guo D, Wang T, Chen Q, Matěj A, Huang J, Han D, Xu Q, Zhao A, Jelínek P, de Oteyza DG, McEwen JS, Zhu J. Chemisorption-Induced Formation of Biphenylene Dimer on Ag(111). J Am Chem Soc 2021; 144:723-732. [PMID: 34964646 DOI: 10.1021/jacs.1c08284] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
We report an example that demonstrates the clear interdependence between surface-supported reactions and molecular-adsorption configurations. Two biphenyl-based molecules with two and four bromine substituents, i.e., 2,2'-dibromobiphenyl (DBBP) and 2,2',6,6'-tetrabromo-1,1'-biphenyl (TBBP), show completely different reaction pathways on a Ag(111) surface, leading to the selective formation of dibenzo[e,l]pyrene and biphenylene dimer, respectively. By combining low-temperature scanning tunneling microscopy, synchrotron radiation photoemission spectroscopy, and density functional theory calculations, we unravel the underlying reaction mechanism. After debromination, a biradical biphenyl can be stabilized by surface Ag adatoms, while a four-radical biphenyl undergoes spontaneous intramolecular annulation due to its extreme instability on Ag(111). Such different chemisorption-induced precursor states between DBBP and TBBP consequently lead to different reaction pathways after further annealing. In addition, using bond-resolving scanning tunneling microscopy and scanning tunneling spectroscopy, we determine with atomic precision the bond-length alternation of the biphenylene dimer product, which contains 4-, 6-, and 8-membered rings. The 4-membered ring units turn out to be radialene structures.
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Affiliation(s)
- Zhiwen Zeng
- National Synchrotron Radiation Laboratory, Department of Chemical Physics and Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Dezhou Guo
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Tao Wang
- National Synchrotron Radiation Laboratory, Department of Chemical Physics and Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei 230029, P. R. China.,Donostia International Physics Center, San Sebastián 20018, Spain.,Centro de Fisica de Materiales, CFM/MPC, CSIC-UPV/EHU, San Sebastián 20018, Spain
| | - Qifan Chen
- Institute of Physics of the Czech Academy of Sciences, Cukrovarnická 10, 16200 Prague 6, Czechia
| | - Adam Matěj
- Institute of Physics of the Czech Academy of Sciences, Cukrovarnická 10, 16200 Prague 6, Czechia
| | - Jianmin Huang
- National Synchrotron Radiation Laboratory, Department of Chemical Physics and Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Dong Han
- National Synchrotron Radiation Laboratory, Department of Chemical Physics and Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Qian Xu
- National Synchrotron Radiation Laboratory, Department of Chemical Physics and Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Aidi Zhao
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, P. R. China
| | - Pavel Jelínek
- Institute of Physics of the Czech Academy of Sciences, Cukrovarnická 10, 16200 Prague 6, Czechia
| | - Dimas G de Oteyza
- Donostia International Physics Center, San Sebastián 20018, Spain.,Centro de Fisica de Materiales, CFM/MPC, CSIC-UPV/EHU, San Sebastián 20018, Spain.,Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
| | - Jean-Sabin McEwen
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States.,Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States.,Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164, United States.,Department of Chemistry, Washington State University, Pullman, Washington 99164, United States.,Department of Biological Systems Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Junfa Zhu
- National Synchrotron Radiation Laboratory, Department of Chemical Physics and Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei 230029, P. R. China
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7
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Shangguan J, Hensley AJ, Morgenstern L, Li Z, McEwen JS, Ma W, Cathy China YH. Brønsted Acidity of H-adatoms at Protic Solvent-Transition Metal Interfaces and its Kinetic Consequences in Electrophilic Addition Reactions. J Catal 2021. [DOI: 10.1016/j.jcat.2021.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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8
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Li H, Guo D, Ulumuddin N, Jaegers NR, Sun J, Peng B, McEwen JS, Hu J, Wang Y. Elucidating the Cooperative Roles of Water and Lewis Acid-Base Pairs in Cascade C-C Coupling and Self-Deoxygenation Reactions. JACS Au 2021; 1:1471-1487. [PMID: 34604856 PMCID: PMC8479772 DOI: 10.1021/jacsau.1c00218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Indexed: 06/13/2023]
Abstract
Water plays pivotal roles in tailoring reaction pathways in many important reactions, including cascade C-C bond formation and oxygen elimination. Herein, a kinetic study combined with complementary analyses (DRIFTS, isotopic study, 1H solid-state magic angle spinning nuclear magnetic resonance) and density functional theory (DFT) calculations are performed to elucidate the roles of water in cascade acetone-to-isobutene reactions on a Zn x Zr y O z mixed metal oxide with balanced Lewis acid-base pairs. Our results reveal that the reaction follows the acetone-diacetone alcohol-isobutene pathway. Isobutene is produced through an intramolecular rearrangement of the eight-membered ring intermediate formed via the adsorption of diacetone alcohol on the Lewis acid-base pairs in the presence of cofed water. OH adspecies, formed by the dissociative adsorption of water on the catalyst surface, were found to distort diacetone alcohol's hydroxyl functional group toward its carbonyl functional group and facilitate the intramolecular rearrangement of diacetone alcohol to form isobutene. In the absence of water, diacetone alcohol binds strongly to the Lewis acid site, e.g., at a Zr4+ site, via its carbonyl functional group, leading to its dramatic structural distortion and further dehydration reaction to form mesityl oxide as well as subsequent polymerization reactions and the formation of coke. The present results provide insights into the cooperative roles of water and Lewis acid-base pairs in catalytic upgrading of biomass to fuels and chemicals.
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Affiliation(s)
- Houqian Li
- The
Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Dezhou Guo
- The
Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Nisa Ulumuddin
- The
Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Nicholas R. Jaegers
- The
Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
- Institute
for Integrated Catalysis, Pacific Northwest
National Laboratory, Richland, Washington 99352, United States
| | - Junming Sun
- The
Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Bo Peng
- Institute
for Integrated Catalysis, Pacific Northwest
National Laboratory, Richland, Washington 99352, United States
| | - Jean-Sabin McEwen
- The
Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
- Institute
for Integrated Catalysis, Pacific Northwest
National Laboratory, Richland, Washington 99352, United States
- Department
of Physics and Astronomy, Washington State
University, Pullman, Washington 99164, United States
- Department
of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Department
of Biological Systems Engineering, Washington
State University, Pullman, Washington 99164, United States
| | - Jianzhi Hu
- The
Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
- Institute
for Integrated Catalysis, Pacific Northwest
National Laboratory, Richland, Washington 99352, United States
| | - Yong Wang
- The
Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
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9
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Hannagan RT, Onyango I, Larson A, McEwen JS, Sykes ECH. Microscopic insights into long-range 1D ordering in a dense semi-disordered molecular overlayer. Chem Commun (Camb) 2021; 57:5937-5940. [PMID: 34014236 DOI: 10.1039/d1cc01574e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The formation of a two-phase surface molecular overlayer that transitions from isolated propene molecules to a highly ordered 1D chain structure on Cu(111) is elucidated through combined high-resolution STM imaging and DFT-based calculations. These models reveal how disordered molecules present in-between the 1D chains stabilizes the system as a whole.
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Affiliation(s)
- Ryan T Hannagan
- Department of Chemistry, Tufts University, Medford, MA 02155, USA.
| | - Isaac Onyango
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA 99164, USA.
| | - Amanda Larson
- Department of Chemistry, Tufts University, Medford, MA 02155, USA.
| | - Jean-Sabin McEwen
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA 99164, USA. and Department of Chemistry, Washington State University, Pullman, WA 99164, USA and Department of Physics, Washington State University, Pullman, WA 99164, USA and Department of Biological Systems Engineering, Washington State University, Pullman, WA 99164, USA and Institute of Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA 99354, USA
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10
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Hensley AJR, Collinge G, Wang Y, McEwen JS. Guiding the design of oxidation-resistant Fe-based single atom alloy catalysts with insights from configurational space. J Chem Phys 2021; 154:174709. [PMID: 34241058 DOI: 10.1063/5.0048698] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The high activity and selectivity of Fe-based heterogeneous catalysts toward a variety of reactions that require the breaking of strong bonds are offset in large part by their considerable instability with respect to oxidative deactivation. While it has been shown that the stability of Fe catalysts is considerably enhanced by alloying them with precious metals (even at the single-atom limit), rational design criteria for choosing such secondary metals are still missing. Since oxidative deactivation occurs due to the strong binding of oxygen to Fe and reduction by adsorbed hydrogen mitigates the deactivation, we propose here to use the binding affinity of oxygen and hydrogen adatoms as the basis for rational design. As it would also be beneficial to use cheaper secondary metals, we have scanned over a large subset of 3d-5d mid-to-late transition metal single atoms and computationally determined their effect on the oxygen and hydrogen adlayer binding as a function of chemical potential and adsorbate coverage. We further determine the underlying chemical origins that are responsible for these effects and connect them to experimentally tunable quantities. Our results reveal a reliable periodic trend wherein oxygen binding is weakened greatest as one moves right and down the periodic table. Hydrogen binding shows the same trend only at high (but relevant) coverages and otherwise tends to have its binding slightly increased in all systems. Trends with secondary metal coverage are also uncovered and connected to experimentally tunable parameters.
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Affiliation(s)
- Alyssa J R Hensley
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, USA
| | - Greg Collinge
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, USA
| | - Yong Wang
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, USA
| | - Jean-Sabin McEwen
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, USA
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11
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Hensley AJ, Bray J, Shangguan J, Chin YH(C, McEwen JS. Catalytic consequences of hydrogen addition events and solvent-adsorbate interactions during guaiacol-H2 reactions at the H2O-Ru(0 0 0 1) interface. J Catal 2021. [DOI: 10.1016/j.jcat.2020.09.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Zhang R, Athariboroujeny M, Collinge G, Iablokov V, Shumilov KD, Kovarik L, Alexandrova AN, Kruse N, McEwen JS. Promoting the Cleavage of C–O Bonds at the Interface between a Metal Oxide Cluster and a Co(0001) Support. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03205] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Renqin Zhang
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Motahare Athariboroujeny
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Greg Collinge
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Viacheslav Iablokov
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Kirill D. Shumilov
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Libor Kovarik
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington, 99352, United States
| | - Anastassia N. Alexandrova
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
- California NanoSystems Institute, Los Angeles, California 90095, United States
| | - Norbert Kruse
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington, 99352, United States
| | - Jean-Sabin McEwen
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
- Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164, United States
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington, 99352, United States
- Department of Biological Systems Engineering, Washington State University, Pullman, Washington 99164, United States
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13
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Shangguan J, Hensley AJR, Gradiski MV, Pfriem N, McEwen JS, Morris RH, Chin YHC. The Role of Protons and Hydrides in the Catalytic Hydrogenolysis of Guaiacol at the Ruthenium Nanoparticle–Water Interface. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01963] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Junnan Shangguan
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto M5S 3E5, Canada
| | - Alyssa J. R. Hensley
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto M5S 3E5, Canada
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman Washington 99164, United States
| | | | - Niklas Pfriem
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto M5S 3E5, Canada
| | - Jean-Sabin McEwen
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman Washington 99164, United States
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164, United States
- Department of Biological Systems Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Robert H. Morris
- Department of Chemistry, University of Toronto, Toronto M5S 3H6, Canada
| | - Ya-Huei Cathy Chin
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto M5S 3E5, Canada
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14
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Zhang Y, Peng Y, Li J, Groden K, McEwen JS, Walter ED, Chen Y, Wang Y, Gao F. Probing Active-Site Relocation in Cu/SSZ-13 SCR Catalysts during Hydrothermal Aging by In Situ EPR Spectroscopy, Kinetics Studies, and DFT Calculations. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01590] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yani Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Yue Peng
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Junhua Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Kyle Groden
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Jean-Sabin McEwen
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
- Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164, United States
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Department of Biological Systems Engineering, Washington State University, Pullman, 99164, United States
| | - Eric D. Walter
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Ying Chen
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Yong Wang
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Feng Gao
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
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15
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Yang Y, Tan M, Garcia A, Zhang Z, Lin J, Wan S, McEwen JS, Wang S, Wang Y. Controlling the Oxidation State of Fe-Based Catalysts through Nitrogen Doping toward the Hydrodeoxygenation of m-Cresol. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00626] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yanling Yang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Mingwu Tan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Aidan Garcia
- Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Zhaoxia Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Jingdong Lin
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Shaolong Wan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Jean-Sabin McEwen
- Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
- Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164, United States
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Department of Biological Systems Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Shuai Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yong Wang
- Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
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16
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Schilling AC, Therrien AJ, Hannagan RT, Marcinkowski MD, Kress PL, Patel DA, Balema TA, Larson AM, Lucci FR, Coughlin BP, Zhang R, Thuening T, Çınar V, McEwen JS, Gellman AJ, Sykes ECH. Templated Growth of a Homochiral Thin Film Oxide. ACS Nano 2020; 14:4682-4688. [PMID: 32186852 DOI: 10.1021/acsnano.0c00398] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Chiral surfaces are of growing interest for enantioselective adsorption and reactions. While metal surfaces can be prepared with a wide range of chiral surface orientations, chiral oxide surface preparation is more challenging. We demonstrate the chirality of a metal surface can be used to direct the homochiral growth of a thin film chiral oxide. Specifically, we study the chiral "29" copper oxide, formed by oxidizing a Cu(111) single crystal at 650 K. Surface structure spread single crystals, which expose a continuous distribution of surface orientations as a function of position on the crystal, enable us to systematically investigate the mechanism of chirality transfer between the metal and the surface oxide with high-resolution scanning tunneling microscopy. We discover that the local underlying metal facet directs the orientation and chirality of the oxide overlayer. Importantly, single homochiral domains of the "29" oxide were found in areas where the Cu step edges that templated growth were ≤20 nm apart. We use this information to select a Cu(239 241 246) oriented single crystal and demonstrate that a "29" oxide surface can be grown in homochiral domains by templating from the subtle chirality of the underlying metal crystal. This work demonstrates how a small degree of chirality induced by slight misorientation of a metal surface (∼1 sites/20 nm2) can be amplified by oxidation to yield a homochiral oxide with a regular array of chiral oxide pores (∼75 sites/20 nm2). This offers a general approach for making chiral oxide surfaces via oxidation of an appropriately "miscut" metal surface.
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Affiliation(s)
- Alex C Schilling
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Andrew J Therrien
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Ryan T Hannagan
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | | | - Paul L Kress
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Dipna A Patel
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Tedros A Balema
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Amanda M Larson
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Felicia R Lucci
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Benjamin P Coughlin
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Renqin Zhang
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Theodore Thuening
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Volkan Çınar
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Jean-Sabin McEwen
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
- Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164, United States
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Department of Biological Systems Engineering, Washington State University, Pullman, Washington 99164, United States
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Andrew J Gellman
- Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
- W.E. Scott Institute for Energy Innovation, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - E Charles H Sykes
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
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17
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Schilling AC, Groden K, Simonovis JP, Hunt A, Hannagan RT, Çınar V, McEwen JS, Sykes ECH, Waluyo I. Accelerated Cu2O Reduction by Single Pt Atoms at the Metal-Oxide Interface. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05270] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alex C. Schilling
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Kyle Groden
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Juan Pablo Simonovis
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Adrian Hunt
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Ryan T. Hannagan
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Volkan Çınar
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Jean-Sabin McEwen
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
- Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164, United States
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Department of Biological Systems Engineering, Washington State University, Pullman, Washington 99164, United States
| | - E. Charles H. Sykes
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Iradwikanari Waluyo
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
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18
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Larson AM, Groden K, Hannagan RT, McEwen JS, Sykes ECH. Understanding Enantioselective Interactions by Pulling Apart Molecular Rotor Complexes. ACS Nano 2019; 13:5939-5946. [PMID: 31070888 DOI: 10.1021/acsnano.9b01781] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Enantioselective interactions underpin many important phenomena from biological mechanisms to chemical catalysis. In this regard, there is great interest in understanding these effects at the molecular level. Surfaces provide a platform for these studies and aid in the long-term goal of designing heterogeneous enantiospecific interfaces. Herein we report a model system consisting of molecular rotors, one intrinsically chiral (propylene oxide) and one that becomes chiral when adsorbed on a surface (propene). Scanning tunneling microscopy (STM) measurements enable the chirality of each individual molecule to be directly visualized, and density functional theory based calculations are performed to rationalize the chiral time-averaged appearance of the molecular rotors. While there are no attractive intermolecular interactions between the molecular species themselves, when mixed together there is a strong preference for the formation of 1:1 heteromolecular pairs. We demonstrate that STM tip-induced molecular manipulations can be used to assemble these complexes, examine the chirality of each species, and thereby interrogate if their interactions are enantioselective. A statistical analysis of this data reveals that intrinsically chiral propylene oxide preferentially binds one of the enantiomers of propene with a 3:2 ratio, thereby demonstrating that the surface chirality of small nonchiral molecules can be directed with a chiral modifier. As such, this investigation sheds light onto previously reported ensemble studies in which chirally seeded layers of molecules that are achiral in the gas phase can lead to an amplification of enantioselective adsorption.
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Affiliation(s)
- Amanda M Larson
- Department of Chemistry , Tufts University , Medford , Massachusetts 02155 , United States
| | - Kyle Groden
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering , Washington State University , Pullman , Washington 99164 , United States
| | - Ryan T Hannagan
- Department of Chemistry , Tufts University , Medford , Massachusetts 02155 , United States
| | - Jean-Sabin McEwen
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering , Washington State University , Pullman , Washington 99164 , United States
- Department of Chemistry , Washington State University , Pullman , Washington 99164 , United States
- Department of Physics , Washington State University , Pullman , Washington 99164 , United States
- Department of Biological Systems Engineering , Washington State University , Pullman , Washington 99164 , United States
- Institute of Integrated Catalysis , Pacific Northwest National Laboratory , Richland , Washington 99352 , United States
| | - E Charles H Sykes
- Department of Chemistry , Tufts University , Medford , Massachusetts 02155 , United States
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19
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Affiliation(s)
- Renqin Zhang
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Emily Anderst
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Kyle Groden
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Jean-Sabin McEwen
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
- Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164, United States
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Department of Biological Systems Engineering, Washington State University, Pullman, Washington 99164, United States
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20
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Farberow C, Getman R, Janik MJ, McEwen JS, Meyer RJ. Computational Catalysis at NAM25. Catal Today 2018. [DOI: 10.1016/j.cattod.2018.05.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Bray J, Hensley AJ, Collinge G, Che F, Wang Y, McEwen JS. Modeling the adsorbate coverage distribution over a multi-faceted catalytic grain in the presence of an electric field: O/Fe from first principles. Catal Today 2018. [DOI: 10.1016/j.cattod.2018.04.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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22
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Therrien AJ, Groden K, Hensley AJ, Schilling AC, Hannagan RT, Marcinkowski MD, Pronschinske A, Lucci FR, Sykes ECH, McEwen JS. Water activation by single Pt atoms supported on a Cu2O thin film. J Catal 2018. [DOI: 10.1016/j.jcat.2018.04.024] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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23
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Abstract
Cu K-edge X-ray absorption near-edge spectra (XANES) have been widely used to study the properties of Cu-SSZ-13. In this Letter, the sensitivity of the XANES features to the local environment for a Cu+ cation with a linear configuration and a Cu2+ cation with a square-linear configuration in Cu-SSZ-13 is reported. When a Cu+ cation is bonded to H2O or NH3 in a linear configuration, the XANES has a strong peak at around 8983 eV. The intensity of this peak decreases as the linear configuration is broken. As for the Cu2+ cations in a square-planar configuration with a coordination number of 4, two peaks at around 8986 and 8993 eV are found. An intensity decrease for both peaks at around 8986 and 8993 eV is found in an NH3_4_Z2Cu model as the N-Cu-N angle changes from 180 to 100°. We correlate these features to the variation of the 4p state by PDOS analysis. In addition, the feature peaks for both the Cu+ cation and Cu2+ cation do not show a dependence on the Cu-N bond length. We further show that the feature peaks also change when the coordination number of the Cu cation is varied, while these feature peaks are independent of the zeolite topology. These findings help elucidate the experimental XANES features at an atomic and an electronic level.
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Affiliation(s)
- Renqin Zhang
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering , Washington State University , Pullman , Washington 99164 , United States
| | - Jean-Sabin McEwen
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering , Washington State University , Pullman , Washington 99164 , United States
- Department of Physics and Astronomy , Washington State University , Pullman , Washington 99164 , United States
- Department of Chemistry , Washington State University , Pullman , Washington 99164 , United States
- Department of Biological Systems Engineering , Washington State University , Pullman , Washington 99164 , United States
- Institute for Integrated Catalysis , Pacific Northwest National Laboratory , Richland , Washington 99352 , United States
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24
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Hensley AJ, Zhang J, Vinçon I, Pereira Hernandez X, Tranca D, Seifert G, McEwen JS, Wang Y. Mechanistic understanding of methanol carbonylation: Interfacing homogeneous and heterogeneous catalysis via carbon supported Ir La. J Catal 2018. [DOI: 10.1016/j.jcat.2018.02.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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25
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Voss JM, Xiang Y, Collinge G, Perea DE, Kovarik L, McEwen JS, Kruse N. Characterization of CoCu- and CoMn-Based Catalysts for the Fischer–Tropsch Reaction Toward Chain-Lengthened Oxygenates. Top Catal 2018. [DOI: 10.1007/s11244-018-0938-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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26
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Affiliation(s)
- Fanglin Che
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Jake T. Gray
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Su Ha
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Norbert Kruse
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Susannah L. Scott
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
- Department of Chemical Engineering, University of California, Santa Barbara, California 93106, United States
| | - Jean-Sabin McEwen
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164, United States
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Department of Biological Systems Engineering, Washington State University, Pullman, Washington 99164, United States
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27
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Therrien AJ, Hensley AJR, Marcinkowski MD, Zhang R, Lucci FR, Coughlin B, Schilling AC, McEwen JS, Sykes ECH. An atomic-scale view of single-site Pt catalysis for low-temperature CO oxidation. Nat Catal 2018. [DOI: 10.1038/s41929-018-0028-2] [Citation(s) in RCA: 232] [Impact Index Per Article: 38.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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28
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Hensley AJR, Wang Y, Mei D, McEwen JS. Mechanistic Effects of Water on the Fe-Catalyzed Hydrodeoxygenation of Phenol. The Role of Brønsted Acid Sites. ACS Catal 2018. [DOI: 10.1021/acscatal.7b02576] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alyssa J. R. Hensley
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, ∥Department of Physics and Astronomy, and ⊥Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Institute for Integrated Catalysis and §Fundamental and
Computational Sciences
Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Yong Wang
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, ∥Department of Physics and Astronomy, and ⊥Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Institute for Integrated Catalysis and §Fundamental and
Computational Sciences
Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Donghai Mei
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, ∥Department of Physics and Astronomy, and ⊥Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Institute for Integrated Catalysis and §Fundamental and
Computational Sciences
Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Jean-Sabin McEwen
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, ∥Department of Physics and Astronomy, and ⊥Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Institute for Integrated Catalysis and §Fundamental and
Computational Sciences
Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
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29
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Therrien AJ, Hensley AJR, Zhang R, Pronschinske A, Marcinkowski MD, McEwen JS, Sykes ECH. Characterizing the geometric and electronic structure of defects in the “29” copper surface oxide. J Chem Phys 2017; 147:224706. [DOI: 10.1063/1.4996729] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Affiliation(s)
- Andrew J. Therrien
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, USA
| | - Alyssa J. R. Hensley
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, USA
| | - Renqin Zhang
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, USA
| | - Alex Pronschinske
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, USA
| | | | - Jean-Sabin McEwen
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, USA
- Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164, USA
- Department of Chemistry, Washington State University, Pullman, Washington 99164, USA
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - E. Charles H. Sykes
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, USA
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30
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Che F, Gray JT, Ha S, McEwen JS. Reducing Reaction Temperature, Steam Requirements, and Coke Formation During Methane Steam Reforming Using Electric Fields: A Microkinetic Modeling and Experimental Study. ACS Catal 2017. [DOI: 10.1021/acscatal.7b01587] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | - Jean-Sabin McEwen
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland Washington 99352, United States
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31
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Che F, Ha S, McEwen JS. Hydrogen Oxidation and Water Dissociation over an Oxygen-Enriched Ni/YSZ Electrode in the Presence of an Electric Field: A First-Principles-Based Microkinetic Model. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.6b04028] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fanglin Che
- The Gene
and Linda Voiland School of Chemical Engineering and Bioengineering, ‡Department of Physics
and Astronomy, and §Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Su Ha
- The Gene
and Linda Voiland School of Chemical Engineering and Bioengineering, ‡Department of Physics
and Astronomy, and §Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Jean-Sabin McEwen
- The Gene
and Linda Voiland School of Chemical Engineering and Bioengineering, ‡Department of Physics
and Astronomy, and §Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
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32
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Che F, Gray JT, Ha S, McEwen JS. Improving Ni Catalysts Using Electric Fields: A DFT and Experimental Study of the Methane Steam Reforming Reaction. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02318] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Fanglin Che
- The
Gene and Linda Voiland School of Chemical Engineering and Bioengineering, ‡Department of Physics
and Astronomy, and §Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Jake T. Gray
- The
Gene and Linda Voiland School of Chemical Engineering and Bioengineering, ‡Department of Physics
and Astronomy, and §Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Su Ha
- The
Gene and Linda Voiland School of Chemical Engineering and Bioengineering, ‡Department of Physics
and Astronomy, and §Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Jean-Sabin McEwen
- The
Gene and Linda Voiland School of Chemical Engineering and Bioengineering, ‡Department of Physics
and Astronomy, and §Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
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33
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Hong Y, Hensley A, McEwen JS, Wang Y. Perspective on Catalytic Hydrodeoxygenation of Biomass Pyrolysis Oils: Essential Roles of Fe-Based Catalysts. Catal Letters 2016. [DOI: 10.1007/s10562-016-1770-1] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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34
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Zhang R, Helling K, McEwen JS. Ab initio X-ray absorption modeling of Cu-SAPO-34: Characterization of Cu exchange sites under different conditions. Catal Today 2016. [DOI: 10.1016/j.cattod.2016.01.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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35
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Zhang R, Szanyi J, Gao F, McEwen JS. The interaction of reactants, intermediates and products with Cu ions in Cu-SSZ-13 NH3 SCR catalysts: an energetic and ab initio X-ray absorption modeling study. Catal Sci Technol 2016. [DOI: 10.1039/c5cy02252e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
By modeling the Cu K-edge XANES of Cu-SSZ-13 from first principles, we find that the intensity and edge position does not only depend on the oxidation state of Cu, but also its coordination environment.
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Affiliation(s)
- Renqin Zhang
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering
- Washington State University
- Pullman
- USA
| | - János Szanyi
- Institute for Integrated Catalysis
- Pacific Northwest National Laboratory
- Richland
- USA
| | - Feng Gao
- Institute for Integrated Catalysis
- Pacific Northwest National Laboratory
- Richland
- USA
| | - Jean-Sabin McEwen
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering
- Washington State University
- Pullman
- USA
- Department of Physics and Astronomy
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36
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37
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Abstract
Tuning the Pt/M ratio tailors the adsorption characteristics of aromatics, similar to Pd/Fe systems, with applications for hydrodeoxygenation catalysis.
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Affiliation(s)
- Alyssa J. R. Hensley
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering
- Washington State University
- Pullman
- USA
| | - Sebastian Schneider
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering
- Washington State University
- Pullman
- USA
| | - Yong Wang
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering
- Washington State University
- Pullman
- USA
- Institute for Integrated Catalysis
| | - Jean-Sabin McEwen
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering
- Washington State University
- Pullman
- USA
- Department of Physics and Astronomy
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38
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Affiliation(s)
| | - Yong Wang
- Pacific
Northwest National Laboratory, Institute for Integrated Catalysis, Richland, Washington 99352, United States
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39
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Zhang R, McEwen JS, Kollár M, Gao F, Wang Y, Szanyi J, Peden CH. NO Chemisorption on Cu/SSZ-13: A Comparative Study from Infrared Spectroscopy and DFT Calculations. ACS Catal 2014. [DOI: 10.1021/cs500563s] [Citation(s) in RCA: 122] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Renqin Zhang
- The
Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Jean-Sabin McEwen
- The
Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
- Department
of Physics and Astronomy, Washington State University, Pullman, Washington 99164, United States
- Department
of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Márton Kollár
- Institute
for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Feng Gao
- Institute
for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Yilin Wang
- Institute
for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - János Szanyi
- Institute
for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Charles H.F. Peden
- Institute
for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
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40
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Hensley AJR, Hong Y, Zhang R, Zhang H, Sun J, Wang Y, McEwen JS. Enhanced Fe2O3 Reducibility via Surface Modification with Pd: Characterizing the Synergy within Pd/Fe Catalysts for Hydrodeoxygenation Reactions. ACS Catal 2014. [DOI: 10.1021/cs500565e] [Citation(s) in RCA: 100] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Alyssa J. R. Hensley
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, ∥Department of Physics and Astronomy, and ⊥Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Institute for Integrated Catalysis and §Environmental Molecular
Sciences
Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Yongchun Hong
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, ∥Department of Physics and Astronomy, and ⊥Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Institute for Integrated Catalysis and §Environmental Molecular
Sciences
Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Renqin Zhang
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, ∥Department of Physics and Astronomy, and ⊥Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Institute for Integrated Catalysis and §Environmental Molecular
Sciences
Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - He Zhang
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, ∥Department of Physics and Astronomy, and ⊥Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Institute for Integrated Catalysis and §Environmental Molecular
Sciences
Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Junming Sun
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, ∥Department of Physics and Astronomy, and ⊥Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Institute for Integrated Catalysis and §Environmental Molecular
Sciences
Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Yong Wang
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, ∥Department of Physics and Astronomy, and ⊥Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Institute for Integrated Catalysis and §Environmental Molecular
Sciences
Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Jean-Sabin McEwen
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, ∥Department of Physics and Astronomy, and ⊥Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Institute for Integrated Catalysis and §Environmental Molecular
Sciences
Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
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41
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Hong Y, Zhang H, Sun J, Ayman KM, Hensley AJR, Gu M, Engelhard MH, McEwen JS, Wang Y. Synergistic Catalysis between Pd and Fe in Gas Phase Hydrodeoxygenation of m-Cresol. ACS Catal 2014. [DOI: 10.1021/cs500578g] [Citation(s) in RCA: 158] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Yongchun Hong
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
- Institute
for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Environmental
Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - He Zhang
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Junming Sun
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Karim M. Ayman
- Institute
for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Alyssa J. R. Hensley
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Meng Gu
- Environmental
Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Mark H. Engelhard
- Environmental
Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Jean-Sabin McEwen
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
- Department
of Physics and Astronomy, Washington State University, Pullman, Washington 99164, United States
- Department
of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Yong Wang
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
- Institute
for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
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42
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Che F, Hensley AJ, Ha S, McEwen JS. Decomposition of methyl species on a Ni(211) surface: investigations of the electric field influence. Catal Sci Technol 2014. [DOI: 10.1039/c4cy00406j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Density functional theory calculations are performed to examine how an external electric field can alter the reaction pathways on a stepped Ni(211) surface with regard to the decomposition of methyl species.
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Affiliation(s)
- Fanglin Che
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering
- Washington State University
- , USA
| | - Alyssa J. Hensley
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering
- Washington State University
- , USA
| | - Su Ha
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering
- Washington State University
- , USA
| | - Jean-Sabin McEwen
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering
- Washington State University
- , USA
- Department of Physics and Astronomy
- Washington State University
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43
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Che F, Zhang R, Hensley AJ, Ha S, McEwen JS. Density functional theory studies of methyl dissociation on a Ni(111) surface in the presence of an external electric field. Phys Chem Chem Phys 2014; 16:2399-410. [DOI: 10.1039/c3cp54135e] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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44
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Zhang R, Hensley AJ, McEwen JS, Wickert S, Darlatt E, Fischer K, Schöppke M, Denecke R, Streber R, Lorenz M, Papp C, Steinrück HP. Integrated X-ray photoelectron spectroscopy and DFT characterization of benzene adsorption on Pt(111), Pt(355) and Pt(322) surfaces. Phys Chem Chem Phys 2013; 15:20662-71. [PMID: 24189500 DOI: 10.1039/c3cp53127a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We systematically investigate the adsorption of benzene on Pt(111), Pt(355) and Pt(322) surfaces by high-resolution X-ray photoelectron spectroscopy (XPS) and first-principle calculations based on density functional theory (DFT), including van der Waals corrections. By comparing the adsorption energies at 1/9, 1/16 and 1/25 ML on Pt(111), we find significant lateral interactions exist between the benzene molecules at 1/9 ML. The adsorption behavior on Pt(355) and Pt(322) is very different. While on Pt(355) a step species is clearly identified in the C 1s spectra at low coverages followed by occupation of a terrace species at high coverages, no evidence for a step species is found on Pt(322). These different adsorption sites are confirmed by extensive DFT calculations, where the most favorable adsorption configurations on Pt(355) and Pt(322) are also found to vary: a highly distorted across the step molecule is found on Pt(355) while a less distorted configuration adjacent to the step molecule is deduced for Pt(322). The theoretically proposed C 1s core level binding energy shifts between these most favorable configurations and the terrace species are found to correlate well with experiment: for Pt(355), two adsorbate states are found, separated by ~0.4 eV in XPS and 0.3 eV in the calculations, in contrast to only one state on Pt(322).
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Affiliation(s)
- Renqin Zhang
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, WA 99164, USA.
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45
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Abstract
Field ion microscopy combined with video techniques and chemical probing reveals the existence of catalytic oscillatory patterns at the nanoscale. This is the case when a rhodium nanosized crystal--conditioned as a field emitter tip--is exposed to hydrogen and oxygen. Here, we show that these nonequilibrium oscillatory patterns find their origin in the different catalytic properties of all of the nanofacets that are simultaneously exposed at the tip's surface. These results suggest that the underlying surface anisotropy, rather than a standard reaction-diffusion mechanism, plays a major role in determining the self-organizational behavior of multifaceted nanostructured surfaces. Surprisingly, this nanoreactor, composed of the tip crystal and a constant molecular flow of reactants, is large enough for the emergence of regular oscillations from the molecular fluctuations.
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Affiliation(s)
- Jean-Sabin McEwen
- Centre for Nonlinear Phenomena and Complex Systems, CP 231, Université Libre de Bruxelles, B-1050 Brussels, Belgium.
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