1
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Zare M, Saleheen MS, Singh N, Uline MJ, Faheem M, Heyden A. Liquid-Phase Effects on Adsorption Processes in Heterogeneous Catalysis. JACS AU 2022; 2:2119-2134. [PMID: 36186571 PMCID: PMC9516566 DOI: 10.1021/jacsau.2c00389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 07/21/2022] [Accepted: 07/26/2022] [Indexed: 06/16/2023]
Abstract
Aqueous solvation free energies of adsorption have recently been measured for phenol adsorption on Pt(111). Endergonic solvent effects of ∼1 eV suggest solvents dramatically influence a metal catalyst's activity with significant implications for the catalyst design. However, measurements are indirect and involve adsorption isotherm models, which potentially reduces the reliability of the extracted energy values. Computational, implicit solvation models predict exergonic solvation effects for phenol adsorption, failing to agree with measurements even qualitatively. In this study, an explicit, hybrid quantum mechanical/molecular mechanical approach for computing solvation free energies of adsorption is developed, solvation free energies of phenol adsorption are computed, and experimental data for solvation free energies of phenol adsorption are reanalyzed using multiple adsorption isotherm models. Explicit solvation calculations predict an endergonic solvation free energy for phenol adsorption that agrees well with measurements to within the experimental and force field uncertainties. Computed adsorption free energies of solvation of carbon monoxide, ethylene glycol, benzene, and phenol over the (111) facet of Pt and Cu suggest that liquid water destabilizes all adsorbed species, with the largest impact on the largest adsorbates.
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Affiliation(s)
- Mehdi Zare
- Department
of Chemical Engineering, University of South
Carolina, 301 Main Street, Columbia, South Carolina 29208, United States
| | - Mohammad S. Saleheen
- Department
of Chemical Engineering, University of South
Carolina, 301 Main Street, Columbia, South Carolina 29208, United States
| | - Nirala Singh
- Department
of Chemical Engineering and Catalysis Science and Technology Institute, University of Michigan, Ann Arbor, Michigan 48109-2136, United States
| | - Mark J. Uline
- Department
of Chemical Engineering, University of South
Carolina, 301 Main Street, Columbia, South Carolina 29208, United States
| | - Muhammad Faheem
- Department
of Chemical Engineering, University of South
Carolina, 301 Main Street, Columbia, South Carolina 29208, United States
- Department
of Chemical Engineering, University of Engineering
& Technology, Lahore 54890, Pakistan
| | - Andreas Heyden
- Department
of Chemical Engineering, University of South
Carolina, 301 Main Street, Columbia, South Carolina 29208, United States
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2
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Wang Y, Kalscheur J, Ebikade E, Li Q, Vlachos DG. LigninGraphs: lignin structure determination with multiscale graph modeling. J Cheminform 2022; 14:43. [PMID: 35794646 PMCID: PMC9261032 DOI: 10.1186/s13321-022-00627-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 06/12/2022] [Indexed: 11/10/2022] Open
Abstract
Lignin is an aromatic biopolymer found in ubiquitous sources of woody biomass. Designing and optimizing lignin valorization processes requires a fundamental understanding of lignin structures. Experimental characterization techniques, such as 2D-heteronuclear single quantum coherence (HSQC) nuclear magnetic resonance (NMR) spectra, could elucidate the global properties of the polymer molecules. Computer models could extend the resolution of experiments by representing structures at the molecular and atomistic scales. We introduce a graph-based multiscale modeling framework for lignin structure generation and visualization. The framework employs accelerated rejection-free polymerization and hierarchical Metropolis Monte Carlo optimization algorithms. We obtain structure libraries for various lignin feedstocks based on literature and new experimental NMR data for poplar wood, pinewood, and herbaceous lignin. The framework could guide researchers towards feasible lignin structures, efficient space exploration, and future kinetics modeling. Its software implementation in Python, LigninGraphs, is open-source and available on GitHub.
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Affiliation(s)
- Yifan Wang
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy St, Newark, DE, 19716, USA.,Catalysis Center for Energy Innovation, RAPID Manufacturing Institute, and Delaware Energy Institute (DEI), University of Delaware, 221 Academy St, Newark, DE, 19716, USA
| | - Jake Kalscheur
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy St, Newark, DE, 19716, USA.,Catalysis Center for Energy Innovation, RAPID Manufacturing Institute, and Delaware Energy Institute (DEI), University of Delaware, 221 Academy St, Newark, DE, 19716, USA
| | - Elvis Ebikade
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy St, Newark, DE, 19716, USA.,Catalysis Center for Energy Innovation, RAPID Manufacturing Institute, and Delaware Energy Institute (DEI), University of Delaware, 221 Academy St, Newark, DE, 19716, USA
| | - Qiang Li
- Catalysis Center for Energy Innovation, RAPID Manufacturing Institute, and Delaware Energy Institute (DEI), University of Delaware, 221 Academy St, Newark, DE, 19716, USA
| | - Dionisios G Vlachos
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy St, Newark, DE, 19716, USA. .,Catalysis Center for Energy Innovation, RAPID Manufacturing Institute, and Delaware Energy Institute (DEI), University of Delaware, 221 Academy St, Newark, DE, 19716, USA.
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3
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Agrahari G, Chatterjee A. Thermodynamic calculations using reverse Monte Carlo: convergence aspects, sources of error and guidelines for improving accuracy. MOLECULAR SIMULATION 2022. [DOI: 10.1080/08927022.2022.2072497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Gargi Agrahari
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai, India
| | - Abhijit Chatterjee
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai, India
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4
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Li G, Jang H, Liu S, Li Z, Kim MG, Qin Q, Liu X, Cho J. The synergistic effect of Hf-O-Ru bonds and oxygen vacancies in Ru/HfO2 for enhanced hydrogen evolution. Nat Commun 2022; 13:1270. [PMID: 35277494 PMCID: PMC8917135 DOI: 10.1038/s41467-022-28947-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 02/15/2022] [Indexed: 11/09/2022] Open
Abstract
Ru nanoparticles have been demonstrated to be highly active electrocatalysts for the hydrogen evolution reaction (HER). At present, most of Ru nanoparticles-based HER electrocatalysts with high activity are supported by heteroatom-doped carbon substrates. Few metal oxides with large band gap (more than 5 eV) as the substrates of Ru nanoparticles are employed for the HER. By using large band gap metal oxides substrates, we can distinguish the contribution of Ru nanoparticles from the substrates. Here, a highly efficient Ru/HfO2 composite is developed by tuning numbers of Ru-O-Hf bonds and oxygen vacancies, resulting in a 20-fold enhancement in mass activity over commercial Pt/C in an alkaline medium. Density functional theory (DFT) calculations reveal that strong metal-support interaction via Ru-O-Hf bonds and the oxygen vacancies in the supported Ru samples synergistically lower the energy barrier for water dissociation to improve catalytic activities. Although ruthenium nanomaterials have proven to be effective catalysts for H2 evolution, there is still room for activity improvements. Here, authors develop an efficient Ru/HfO2 electrocatalyst with tuned Ru-O-Hf bonds and oxygen vacancies that shows high activities for alkaline H2 evolution.
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5
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Synthesis, structural elucidation, and catalytic activity of bimetallic rhenium-tin complexes containing Schiff base ligand. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131545] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Tereshchenko A, Pashkov D, Guda A, Guda S, Rusalev Y, Soldatov A. Adsorption Sites on Pd Nanoparticles Unraveled by Machine-Learning Potential with Adaptive Sampling. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27020357. [PMID: 35056671 PMCID: PMC8780420 DOI: 10.3390/molecules27020357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 12/30/2021] [Accepted: 01/04/2022] [Indexed: 01/08/2023]
Abstract
Catalytic properties of noble-metal nanoparticles (NPs) are largely determined by their surface morphology. The latter is probed by surface-sensitive spectroscopic techniques in different spectra regions. A fast and precise computational approach enabling the prediction of surface-adsorbate interaction would help the reliable description and interpretation of experimental data. In this work, we applied Machine Learning (ML) algorithms for the task of adsorption-energy approximation for CO on Pd nanoclusters. Due to a high dependency of binding energy from the nature of the adsorbing site and its local coordination, we tested several structural descriptors for the ML algorithm, including mean Pd-C distances, coordination numbers (CN) and generalized coordination numbers (GCN), radial distribution functions (RDF), and angular distribution functions (ADF). To avoid overtraining and to probe the most relevant positions above the metal surface, we utilized the adaptive sampling methodology for guiding the ab initio Density Functional Theory (DFT) calculations. The support vector machines (SVM) and Extra Trees algorithms provided the best approximation quality and mean absolute error in energy prediction up to 0.12 eV. Based on the developed potential, we constructed an energy-surface 3D map for the whole Pd55 nanocluster and extended it to new geometries, Pd79, and Pd85, not implemented in the training sample. The methodology can be easily extended to adsorption energies onto mono- and bimetallic NPs at an affordable computational cost and accuracy.
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Affiliation(s)
- Andrei Tereshchenko
- The Smart Materials Research Institute, Southern Federal University, 344090 Rostov-on-Don, Russia; (D.P.); (A.G.); (S.G.); (Y.R.); (A.S.)
- Correspondence:
| | - Danil Pashkov
- The Smart Materials Research Institute, Southern Federal University, 344090 Rostov-on-Don, Russia; (D.P.); (A.G.); (S.G.); (Y.R.); (A.S.)
- Vorovich Institute of Mathematics, Mechanics, and Computer Sciences, Southern Federal University, 344058 Rostov-on-Don, Russia
| | - Alexander Guda
- The Smart Materials Research Institute, Southern Federal University, 344090 Rostov-on-Don, Russia; (D.P.); (A.G.); (S.G.); (Y.R.); (A.S.)
| | - Sergey Guda
- The Smart Materials Research Institute, Southern Federal University, 344090 Rostov-on-Don, Russia; (D.P.); (A.G.); (S.G.); (Y.R.); (A.S.)
- Vorovich Institute of Mathematics, Mechanics, and Computer Sciences, Southern Federal University, 344058 Rostov-on-Don, Russia
| | - Yury Rusalev
- The Smart Materials Research Institute, Southern Federal University, 344090 Rostov-on-Don, Russia; (D.P.); (A.G.); (S.G.); (Y.R.); (A.S.)
| | - Alexander Soldatov
- The Smart Materials Research Institute, Southern Federal University, 344090 Rostov-on-Don, Russia; (D.P.); (A.G.); (S.G.); (Y.R.); (A.S.)
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7
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Parvulescu VI, Epron F, Garcia H, Granger P. Recent Progress and Prospects in Catalytic Water Treatment. Chem Rev 2021; 122:2981-3121. [PMID: 34874709 DOI: 10.1021/acs.chemrev.1c00527] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Presently, conventional technologies in water treatment are not efficient enough to completely mineralize refractory water contaminants. In this context, the implementation of catalytic processes could be an alternative. Despite the advantages provided in terms of kinetics of transformation, selectivity, and energy saving, numerous attempts have not yet led to implementation at an industrial scale. This review examines investigations at different scales for which controversies and limitations must be solved to bridge the gap between fundamentals and practical developments. Particular attention has been paid to the development of solar-driven catalytic technologies and some other emerging processes, such as microwave assisted catalysis, plasma-catalytic processes, or biocatalytic remediation, taking into account their specific advantages and the drawbacks. Challenges for which a better understanding related to the complexity of the systems and the coexistence of various solid-liquid-gas interfaces have been identified.
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Affiliation(s)
- Vasile I Parvulescu
- Department of Organic Chemistry, Biochemistry and Catalysis, University of Bucharest, B-dul Regina Elisabeta 4-12, Bucharest 030016, Romania
| | - Florence Epron
- Université de Poitiers, CNRS UMR 7285, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), 4 rue Michel Brunet, TSA 51106, 86073 Poitiers Cedex 9, France
| | - Hermenegildo Garcia
- Instituto Universitario de Tecnología Química, Universitat Politecnica de Valencia-Consejo Superior de Investigaciones Científicas, Universitat Politencia de Valencia, Av. de los Naranjos s/n, 46022 Valencia, Spain
| | - Pascal Granger
- CNRS, Centrale Lille, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, Univ. Lille, F-59000 Lille, France
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8
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Yun YS, Berdugo-Díaz CE, Flaherty DW. Advances in Understanding the Selective Hydrogenolysis of Biomass Derivatives. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02866] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Yang Sik Yun
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Claudia E. Berdugo-Díaz
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - David W. Flaherty
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
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9
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Kim S, Lauterbach J, Sasmaz E. Yolk–Shell Pt-NiCe@SiO 2 Single-Atom-Alloy Catalysts for Low-Temperature Dry Reforming of Methane. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01223] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Sunkyu Kim
- Department of Chemical and Biomolecular Engineering, University of California, Irvine, Irvine, California 92697, United States
| | - Jochen Lauterbach
- Smartstate Center for Strategic Approaches to the Generation of Electricity (SAGE), Department of Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Erdem Sasmaz
- Department of Chemical and Biomolecular Engineering, University of California, Irvine, Irvine, California 92697, United States
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10
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Huo J, Tessonnier JP, Shanks BH. Improving Hydrothermal Stability of Supported Metal Catalysts for Biomass Conversions: A Review. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00197] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Jiajie Huo
- Department of Chemical and Biological Engineering, Iowa State University, Ames, Iowa 50011, United States
- Center for Biorenewable Chemicals, Iowa State University, Ames, Iowa 50011, United States
| | - Jean-Philippe Tessonnier
- Department of Chemical and Biological Engineering, Iowa State University, Ames, Iowa 50011, United States
- Center for Biorenewable Chemicals, Iowa State University, Ames, Iowa 50011, United States
| | - Brent H. Shanks
- Department of Chemical and Biological Engineering, Iowa State University, Ames, Iowa 50011, United States
- Center for Biorenewable Chemicals, Iowa State University, Ames, Iowa 50011, United States
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11
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Timoshenko J, Roldan Cuenya B. In Situ/ Operando Electrocatalyst Characterization by X-ray Absorption Spectroscopy. Chem Rev 2021; 121:882-961. [PMID: 32986414 PMCID: PMC7844833 DOI: 10.1021/acs.chemrev.0c00396] [Citation(s) in RCA: 173] [Impact Index Per Article: 57.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Indexed: 12/18/2022]
Abstract
During the last decades, X-ray absorption spectroscopy (XAS) has become an indispensable method for probing the structure and composition of heterogeneous catalysts, revealing the nature of the active sites and establishing links between structural motifs in a catalyst, local electronic structure, and catalytic properties. Here we discuss the fundamental principles of the XAS method and describe the progress in the instrumentation and data analysis approaches undertaken for deciphering X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) spectra. Recent usages of XAS in the field of heterogeneous catalysis, with emphasis on examples concerning electrocatalysis, will be presented. The latter is a rapidly developing field with immense industrial applications but also unique challenges in terms of the experimental characterization restrictions and advanced modeling approaches required. This review will highlight the new insight that can be gained with XAS on complex real-world electrocatalysts including their working mechanisms and the dynamic processes taking place in the course of a chemical reaction. More specifically, we will discuss applications of in situ and operando XAS to probe the catalyst's interactions with the environment (support, electrolyte, ligands, adsorbates, reaction products, and intermediates) and its structural, chemical, and electronic transformations as it adapts to the reaction conditions.
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Affiliation(s)
- Janis Timoshenko
- Department of Interface Science, Fritz-Haber Institute of the Max-Planck Society, 14195 Berlin, Germany
| | - Beatriz Roldan Cuenya
- Department of Interface Science, Fritz-Haber Institute of the Max-Planck Society, 14195 Berlin, Germany
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12
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Dependency of solvation effects on metal identity in surface reactions. Commun Chem 2020; 3:187. [PMID: 36703410 PMCID: PMC9814277 DOI: 10.1038/s42004-020-00428-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Accepted: 11/09/2020] [Indexed: 01/29/2023] Open
Abstract
Solvent interactions with adsorbed moieties involved in surface reactions are often believed to be similar for different metal surfaces. However, solvents alter the electronic structures of surface atoms, which in turn affects their interaction with adsorbed moieties. To reveal the importance of metal identity on aqueous solvent effects in heterogeneous catalysis, we studied solvent effects on the activation free energies of the O-H and C-H bond cleavages of ethylene glycol over the (111) facet of six transition metals (Ni, Pd, Pt, Cu, Ag, Au) using an explicit solvation approach based on a hybrid quantum mechanical/molecular mechanical (QM/MM) description of the potential energy surface. A significant metal dependence on aqueous solvation effects was observed that suggests solvation effects must be studied in detail for every reaction system. The main reason for this dependence could be traced back to a different amount of charge-transfer between the adsorbed moieties and metals in the reactant and transition states for the different metal surfaces.
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13
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Lansford JL, Vlachos DG. Infrared spectroscopy data- and physics-driven machine learning for characterizing surface microstructure of complex materials. Nat Commun 2020; 11:1513. [PMID: 32251293 PMCID: PMC7089992 DOI: 10.1038/s41467-020-15340-7] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 02/20/2020] [Indexed: 11/17/2022] Open
Abstract
There is a need to characterize complex materials and their dynamics under reaction conditions to accelerate materials design. Adsorbate vibrational excitations are selective to adsorbate/surface interactions and infrared (IR) spectra associated with activating adsorbate vibrational modes are accurate, capture details of most modes, and can be obtained operando. Current interpretation depends on heuristic peak assignments for simple spectra, precluding the possibility of obtaining detailed structural information. Here, we combine data-based approaches with chemistry-dependent problem formulation to develop physics-driven surrogate models that generate synthetic IR spectra from first-principles calculations. Using synthetic IR spectra of carbon monoxide on platinum, we implement multinomial regression via neural network ensembles to learn probability distributions functions (pdfs) that describe adsorption sites and quantify uncertainty. We use these pdfs to infer detailed surface microstructure from experimental spectra and extend this methodology to other systems as a first step towards characterizing complex interfaces and closing the materials gap.
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Affiliation(s)
- Joshua L Lansford
- Department of Chemical Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, DE, 19716, USA
| | - Dionisios G Vlachos
- Department of Chemical Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, DE, 19716, USA.
- Catalysis Center for Energy Innovation, University of Delaware, 221 Academy Street, Newark, DE, 19716, USA.
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14
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15
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Shao J, Liu M, Wang Z, Li K, Bao B, Zhao S, Zhou S. Controllable Synthesis of Surface Pt-Rich Bimetallic AuPt Nanocatalysts for Selective Hydrogenation Reactions. ACS OMEGA 2019; 4:15621-15627. [PMID: 31572863 PMCID: PMC6761762 DOI: 10.1021/acsomega.9b02117] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 08/28/2019] [Indexed: 06/10/2023]
Abstract
Bimetallic nanocatalysts, with efficient and controllable catalytic performance, have a promising application in chemical production. In this study, surface Pt-rich bimetallic AuPt nanoparticles with different Pt/Au ratios were prepared and tested in selective hydrogenation reactions of substituted nitroaromatics. Au nanoparticles were first prepared with n-butyllithium as a rapid reducer, which were further used as seeds in the slow growth process of Pt atoms. Because of the employed sequential reduction method and the following atom diffusion, surface Pt-rich bimetallic AuPt nanoparticles were obtained. Compared with the uniform AuPt alloy nanocatalysts synthesized by the co-reduction method with n-butyllithium as the reducer and monometallic Pt nanocatalysts, the obtained surface Pt-rich AuPt bimetallic nanocatalysts presented an enhanced catalytic selectivity or activity. The performance enhancement is assigned to the optimized Au/Pt interaction in the surface Pt-rich bimetallic nanostructures. This work demonstrates that the optimization of the stoichiometry and construction of bimetallic materials is a feasible method to synthesize controllable and efficient nanocatalysts.
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16
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Li D, Li Y, Liu X, Guo Y, Pao CW, Chen JL, Hu Y, Wang Y. NiAl2O4 Spinel Supported Pt Catalyst: High Performance and Origin in Aqueous-Phase Reforming of Methanol. ACS Catal 2019. [DOI: 10.1021/acscatal.9b02243] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Didi Li
- Shanghai Key Laboratory of Functional Materials Chemistry and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, P. R. China
| | - Yi Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Xiaohui Liu
- Shanghai Key Laboratory of Functional Materials Chemistry and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, P. R. China
| | - Yong Guo
- Shanghai Key Laboratory of Functional Materials Chemistry and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, P. R. China
| | - Chih-Wen Pao
- National Synchrotron Radiation Research Centre, Hsinchu 30076, Taiwan
| | - Jeng-Lung Chen
- National Synchrotron Radiation Research Centre, Hsinchu 30076, Taiwan
| | - Yongfeng Hu
- Canadian Light Source Inc., 44 Innovation Boulevard, Saskatoon, Saskatchewan S7N 2V3, Canada
| | - Yanqin Wang
- Shanghai Key Laboratory of Functional Materials Chemistry and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, P. R. China
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17
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Timoshenko J, Duan Z, Henkelman G, Crooks RM, Frenkel AI. Solving the Structure and Dynamics of Metal Nanoparticles by Combining X-Ray Absorption Fine Structure Spectroscopy and Atomistic Structure Simulations. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2019; 12:501-522. [PMID: 30699037 DOI: 10.1146/annurev-anchem-061318-114929] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Extended X-ray absorption fine structure (EXAFS) spectroscopy is a premiere method for analysis of the structure and structural transformation of nanoparticles. Extraction of analytical information about the three-dimensional structure and dynamics of metal-metal bonds from EXAFS spectra requires special care due to their markedly non-bulk-like character. In recent decades, significant progress has been made in the first-principles modeling of structure and properties of nanoparticles. In this review, we summarize new approaches for EXAFS data analysis that incorporate particle structure modeling into the process of structural refinement.
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Affiliation(s)
- J Timoshenko
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, USA;
| | - Z Duan
- Department of Chemistry and Texas Materials Institute, University of Texas at Austin, Austin, Texas 78712, USA
- Institute for Computational and Engineering Sciences, University of Texas at Austin, Austin, Texas 78712, USA
| | - G Henkelman
- Department of Chemistry and Texas Materials Institute, University of Texas at Austin, Austin, Texas 78712, USA
- Institute for Computational and Engineering Sciences, University of Texas at Austin, Austin, Texas 78712, USA
| | - R M Crooks
- Department of Chemistry and Texas Materials Institute, University of Texas at Austin, Austin, Texas 78712, USA
| | - A I Frenkel
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, USA;
- Division of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, USA
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18
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Guo Y, Liu X, Wang Y. Catalytic and DRIFTS Studies of Pt-Based Bimetallic Alloy Catalysts in Aqueous-Phase Reforming of Glycerol. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.8b05774] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yong Guo
- Shanghai Key Laboratory of Functional Materials Chemistry, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Xiaohui Liu
- Shanghai Key Laboratory of Functional Materials Chemistry, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Yanqin Wang
- Shanghai Key Laboratory of Functional Materials Chemistry, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
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19
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Timoshenko J, Wrasman CJ, Luneau M, Shirman T, Cargnello M, Bare SR, Aizenberg J, Friend CM, Frenkel AI. Probing Atomic Distributions in Mono- and Bimetallic Nanoparticles by Supervised Machine Learning. NANO LETTERS 2019; 19:520-529. [PMID: 30501196 DOI: 10.1021/acs.nanolett.8b04461] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Properties of mono- and bimetallic metal nanoparticles (NPs) may depend strongly on their compositional, structural (or geometrical) attributes, and their atomic dynamics, all of which can be efficiently described by a partial radial distribution function (PRDF) of metal atoms. For NPs that are several nanometers in size, finite size effects may play a role in determining crystalline order, interatomic distances, and particle shape. Bimetallic NPs may also have different compositional distributions than bulk materials. These factors all render the determination of PRDFs challenging. Here extended X-ray absorption fine structure (EXAFS) spectroscopy, molecular dynamics simulations, and supervised machine learning (artificial neural-network) method are combined to extract PRDFs directly from experimental data. By applying this method to several systems of Pt and PdAu NPs, we demonstrate the finite size effects on the nearest neighbor distributions, bond dynamics, and alloying motifs in mono- and bimetallic particles and establish the generality of this approach.
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Affiliation(s)
- Janis Timoshenko
- Department of Materials Science and Chemical Engineering , Stony Brook University , Stony Brook , New York 11794 , United States
| | - Cody J Wrasman
- Department of Chemical Engineering and SUNCAT Center for Interface Science and Catalysis , Stanford University , Stanford , California 94305 , United States
| | | | | | - Matteo Cargnello
- Department of Chemical Engineering and SUNCAT Center for Interface Science and Catalysis , Stanford University , Stanford , California 94305 , United States
| | - Simon R Bare
- Stanford Synchrotron Radiation Lightsource , SLAC National Accelerator Laboratory , Menlo Park , California 94025 , United States
| | | | | | - Anatoly I Frenkel
- Department of Materials Science and Chemical Engineering , Stony Brook University , Stony Brook , New York 11794 , United States
- Division of Chemistry , Brookhaven National Laboratory , Upton , New York 11973 , United States
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20
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Núñez M, Vlachos DG. Multiscale Modeling Combined with Active Learning for Microstructure Optimization of Bifunctional Catalysts. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b04801] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Marcel Núñez
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Dionisios G. Vlachos
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
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21
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Gilkey MJ, Brady C, Vlachos DG, Xu B. Characterization of Oxidation States in Metal/Metal Oxide Catalysts in Liquid-Phase Hydrodeoxygenation Reactions with a Trickle Bed Reactor. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b00797] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthew J. Gilkey
- Catalysis Center for Energy Innovation, Chemical & Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Casper Brady
- Catalysis Center for Energy Innovation, Chemical & Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Dionisios G. Vlachos
- Catalysis Center for Energy Innovation, Chemical & Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Bingjun Xu
- Catalysis Center for Energy Innovation, Chemical & Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
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22
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Liu D, Li Y, Kottwitz M, Yan B, Yao S, Gamalski A, Grolimund D, Safonova OV, Nachtegaal M, Chen JG, Stach EA, Nuzzo RG, Frenkel AI. Identifying Dynamic Structural Changes of Active Sites in Pt–Ni Bimetallic Catalysts Using Multimodal Approaches. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00706] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Deyu Liu
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Yuanyuan Li
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, United States
| | - Matthew Kottwitz
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Binhang Yan
- Division of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Siyu Yao
- Division of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Andrew Gamalski
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | | | | | | | - Jingguang G. Chen
- Division of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, United States
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Eric A. Stach
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Ralph G. Nuzzo
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Anatoly I. Frenkel
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, United States
- Division of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, United States
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23
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Goulas KA, Lee JD, Zheng W, Lym J, Yao S, Oh DS, Wang C, Gorte RJ, Chen JG, Murray CB, Vlachos DG. Spectroscopic characterization of a highly selective NiCu3/C hydrodeoxygenation catalyst. Catal Sci Technol 2018. [DOI: 10.1039/c8cy01280f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Formation of a NiO layer atop a NiO–Cu2O bulk under reaction conditions is established via operando XAS.
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24
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Gould NS, Xu B. Catalyst characterization in the presence of solvent: development of liquid phase structure-activity relationships. Chem Sci 2017; 9:281-287. [PMID: 29629097 PMCID: PMC5870052 DOI: 10.1039/c7sc03728g] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Accepted: 11/16/2017] [Indexed: 12/26/2022] Open
Abstract
Due to the low volatility and highly oxygenated nature of biomass derived feedstocks, biomass upgrade reactions are frequently conducted in the presence of solvent to improve substrate mass transfer to the catalyst surface. However, relevant catalyst characterization techniques are most often performed in vacuum or inert gas environments, where the effect of solvent on the catalytic sites is ignored. Comparatively, characterization techniques in the presence of solvent are relatively rare, which poses challenges in developing structure-activity relationships for liquid phase reactions. In this perspective, commonly utilized techniques for probing the solid-liquid interface are briefly covered, with a focus on the role of solvent on zeolite and solid acid catalysis. New applications of techniques are proposed, most notably with ATR-FTIR, in the context of extracting thermodynamic information for the further understanding of the role of solvent on broadly applicable catalyst properties, such as acidity, and to develop structure-activity relationships for solid catalysts in solvent.
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Affiliation(s)
- Nicholas S Gould
- Catalysis Center for Energy Innovation , Department of Chemical and Biomolecular Engineering , University of Delaware , 150 Academy St. , Newark , DE , USA 19716 .
| | - Bingjun Xu
- Catalysis Center for Energy Innovation , Department of Chemical and Biomolecular Engineering , University of Delaware , 150 Academy St. , Newark , DE , USA 19716 .
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25
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Dewoolkar KD, Vaidya PD. Sorption-Enhanced Steam Reforming of Ethylene Glycol over Dual Functional Hydrotalcite Materials Promoted with Pt and Ru. ChemistrySelect 2017. [DOI: 10.1002/slct.201701007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Karan D. Dewoolkar
- Department of Chemical Engineering; Institute of Chemical Technology; Nathalal Parekh Marg; Matunga, Mumbai- 400019 India
| | - Prakash D. Vaidya
- Department of Chemical Engineering; Institute of Chemical Technology; Nathalal Parekh Marg; Matunga, Mumbai- 400019 India
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26
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Vaidya PD, Lopez-Sanchez JA. Review of Hydrogen Production by Catalytic Aqueous-Phase Reforming. ChemistrySelect 2017. [DOI: 10.1002/slct.201700905] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Prakash D. Vaidya
- Department of Chemical Engineering; Institute of Chemical Technology, Nathalal Parekh Marg, Matunga; Mumbai- 400019 India
| | - Jose A. Lopez-Sanchez
- Stephenson's Institute for Renewable Energy; Department of Chemistry; The University of Liverpool; Liverpool L69 7ZD UK
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27
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Li X, Wan W, Kattel S, Chen JG, Wang T. Selective hydrogenation of biomass-derived 2(5H)-furanone over Pt-Ni and Pt-Co bimetallic catalysts: From model surfaces to supported catalysts. J Catal 2016. [DOI: 10.1016/j.jcat.2016.09.027] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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28
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Li D, Li X, Gong J. Catalytic Reforming of Oxygenates: State of the Art and Future Prospects. Chem Rev 2016; 116:11529-11653. [PMID: 27527927 DOI: 10.1021/acs.chemrev.6b00099] [Citation(s) in RCA: 211] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
This Review describes recent advances in the design, synthesis, reactivity, selectivity, structural, and electronic properties of the catalysts for reforming of a variety of oxygenates (e.g., from simple monoalcohols to higher polyols, then to sugars, phenols, and finally complicated mixtures like bio-oil). A comprehensive exploration of the structure-activity relationship in catalytic reforming of oxygenates is carried out, assisted by state-of-the-art characterization techniques and computational tools. Critical emphasis has been given on the mechanisms of these heterogeneous-catalyzed reactions and especially on the nature of the active catalytic sites and reaction pathways. Similarities and differences (reaction mechanisms, design and synthesis of catalysts, as well as catalytic systems) in the reforming process of these oxygenates will also be discussed. A critical overview is then provided regarding the challenges and opportunities for research in this area with a focus on the roles that systems of heterogeneous catalysis, reaction engineering, and materials science can play in the near future. This Review aims to present insights into the intrinsic mechanism involved in catalytic reforming and provides guidance to the development of novel catalysts and processes for the efficient utilization of oxygenates for energy and environmental purposes.
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Affiliation(s)
- Di Li
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University; Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300072, China
| | - Xinyu Li
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University; Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300072, China
| | - Jinlong Gong
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University; Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300072, China
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29
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Mei D, Lebarbier Dagle V, Xing R, Albrecht KO, Dagle RA. Steam Reforming of Ethylene Glycol over MgAl2O4 Supported Rh, Ni, and Co Catalysts. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01666] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Donghai Mei
- Fundamental
and Computational Sciences Directorate, Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Vanessa Lebarbier Dagle
- Energy
and Environmental Directorate, Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Rong Xing
- Energy
and Environmental Directorate, Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Karl O. Albrecht
- Energy
and Environmental Directorate, Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Robert A. Dagle
- Energy
and Environmental Directorate, Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
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30
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Wei Z, Karim A, Li Y, Wang Y. Elucidation of the Roles of Re in Aqueous-Phase Reforming of Glycerol over Pt–Re/C Catalysts. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01770] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhehao Wei
- 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
| | - Ayman Karim
- Institute
for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Yan Li
- The
Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, 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
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31
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Guo W, Vlachos DG. Patched bimetallic surfaces are active catalysts for ammonia decomposition. Nat Commun 2015; 6:8619. [PMID: 26443525 PMCID: PMC4633960 DOI: 10.1038/ncomms9619] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Accepted: 09/12/2015] [Indexed: 11/30/2022] Open
Abstract
Ammonia decomposition is often used as an archetypical reaction for predicting new catalytic materials and understanding the very reason of why some reactions are sensitive on material's structure. Core-shell or surface-segregated bimetallic nanoparticles expose outstanding activity for many heterogeneously catalysed reactions but the reasons remain elusive owing to the difficulties in experimentally characterizing active sites. Here by performing multiscale simulations in ammonia decomposition on various nickel loadings on platinum (111), we show that the very high activity of core-shell structures requires patches of the guest metal to create and sustain dual active sites: nickel terraces catalyse N-H bond breaking and nickel edge sites drive atomic nitrogen association. The structure sensitivity on these active catalysts depends profoundly on reaction conditions due to kinetically competing relevant elementary reaction steps. We expose a remarkable difference in active sites between transient and steady-state studies and provide insights into optimal material design.
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Affiliation(s)
- Wei Guo
- Department of Chemical and Biomolecular Engineering, Catalysis Center for Energy Innovation, University of Delaware, Newark, Delaware 19716, USA
- School of Physics, Beijing Institute of Technology, Beijing 100081, China
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Dionisios G. Vlachos
- Department of Chemical and Biomolecular Engineering, Catalysis Center for Energy Innovation, University of Delaware, Newark, Delaware 19716, USA
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32
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Liao H, Fisher A, Xu ZJ. Surface Segregation in Bimetallic Nanoparticles: A Critical Issue in Electrocatalyst Engineering. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:3221-46. [PMID: 25823964 DOI: 10.1002/smll.201403380] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 02/07/2015] [Indexed: 05/23/2023]
Abstract
Bimetallic nanoparticles are a class of important electrocatalyst. They exhibit a synergistic effect that critically depends on the surface composition, which determines the surface properties and the adsorption/desorption behavior of the reactants and intermediates during catalysis. The surface composition can be varied, as nanoparticles are exposed to certain environments through surface segregation. Thermodynamically, this is caused by a difference in surface energy between the two metals. It may lead to the enrichment of one metal on the surface and the other in the core. The external conditions that influence the surface energy may lead to the variation of the thermodynamic steady state of the particle surface and, thus, offer a chance to vary the surface composition. In this review, the most recent and important progress in surface segregation of bimetallic nanoparticles and its impact in electrocatalysis are introduced. Typical segregation inducements and surface characterization techniques are discussed in detail. It is concluded that surface segregation is a critical issue when designing bimetallic catalysts. It is necessary to explore methods to control it and utilize it as a way towards producing robust, bimetallic electrocatalysts.
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Affiliation(s)
- Hanbin Liao
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
- Energy Research Institute@NTU, ERI@NNanyang Technological University, Singapore
| | - Adrian Fisher
- Department of Chemical Engineering, Cambridge University, Cambridge, CB2 3RA, UK
| | - Zhichuan J Xu
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
- Energy Research Institute@NTU, ERI@NNanyang Technological University, Singapore
- Solar Fuels Lab, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
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33
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Schmitz-Antoniak C. X-ray absorption spectroscopy on magnetic nanoscale systems for modern applications. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2015; 78:062501. [PMID: 26029938 DOI: 10.1088/0034-4885/78/6/062501] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
X-ray absorption spectroscopy facilitated by state-of-the-art synchrotron radiation technology is presented as a powerful tool to study nanoscale systems, in particular revealing their static element-specific magnetic and electronic properties on a microscopic level. A survey is given on the properties of nanoparticles, nanocomposites and thin films covering a broad range of possible applications. It ranges from the ageing effects of iron oxide nanoparticles in dispersion for biomedical applications to the characterisation on a microscopic level of nanoscale systems for data storage devices. In this respect, new concepts for electrically addressable magnetic data storage devices are highlighted by characterising the coupling in a BaTiO(3)/CoFe(2)O(4) nanocomposite as prototypical model system. But classical magnetically addressable devices are also discussed on the basis of tailoring the magnetic properties of self-assembled ensembles of FePt nanoparticles for data storage and the high-moment material Fe/Cr/Gd for write heads. For the latter cases, the importance is emphasised of combining experimental approaches in x-ray absorption spectroscopy with density functional theory to gain a more fundamental understanding.
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Affiliation(s)
- Carolin Schmitz-Antoniak
- Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Lotharstr. 1, D-47048 Duisburg, Germany
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34
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ZHAO XL, LÜ YA, LIAO WP, JIN MS, SUO ZH. Hydrogen production from steam reforming of ethylene glycol over supported nickel catalysts. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/s1872-5813(15)30017-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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35
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Xiong K, Yu W, Vlachos DG, Chen JG. Reaction Pathways of Biomass‐Derived Oxygenates over Metals and Carbides: From Model Surfaces to Supported Catalysts. ChemCatChem 2015. [DOI: 10.1002/cctc.201403067] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ke Xiong
- Catalysis Center for Energy Innovation, Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE, 19716 (USA)
| | - Weiting Yu
- Department of Chemical Engineering, Columbia University, New York, NY, 10027 (USA)
| | - Dionisios G. Vlachos
- Catalysis Center for Energy Innovation, Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE, 19716 (USA)
| | - Jingguang G. Chen
- Department of Chemical Engineering, Columbia University, New York, NY, 10027 (USA)
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36
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Wei Z, Karim AM, Li Y, King DL, Wang Y. Elucidation of the roles of Re in steam reforming of glycerol over Pt–Re/C catalysts. J Catal 2015. [DOI: 10.1016/j.jcat.2014.11.006] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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37
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Shi H, Lercher JA, Yu XY. Sailing into uncharted waters: recent advances in the in situ monitoring of catalytic processes in aqueous environments. Catal Sci Technol 2015. [DOI: 10.1039/c4cy01720j] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review presents recent advances inin situstudies of catalytic processes in the aqueous environment with an outlook of mesoscale imaging.
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Affiliation(s)
- Hui Shi
- Fundamental and Computer Sciences Directorate
- Pacific Northwest National Laboratory (PNNL)
- Richland
- USA
| | - Johannes A. Lercher
- Fundamental and Computer Sciences Directorate
- Pacific Northwest National Laboratory (PNNL)
- Richland
- USA
- Department of Chemistry
| | - Xiao-Ying Yu
- Fundamental and Computer Sciences Directorate
- Pacific Northwest National Laboratory (PNNL)
- Richland
- USA
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38
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Pang SH, Love NE, Medlin JW. Synergistic Effects of Alloying and Thiolate Modification in Furfural Hydrogenation over Cu-Based Catalysts. J Phys Chem Lett 2014; 5:4110-4114. [PMID: 26278941 DOI: 10.1021/jz502153q] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Control of bimetallic surface composition and surface modification with self-assembled monolayers (SAMs) represent two methods for modifying catalyst activity and selectivity. However, possible synergistic effects of employing these strategies in concert have not been previously explored. We investigated the effects of modifying Cu/Al2O3 catalysts by alloying with Ni and modifying with octadecanethiol (C18) SAMs, using furfural hydrogenation as a probe reaction. Incorporation of small amounts of Ni (Cu4Ni) improved catalytic activity while slightly reducing hydrogenation selectivity. Further incorporation of Ni resulted in high rates for decarbonylation and ring-opening. Modification of the Cu4Ni catalyst with C18-SAMs resulted in improvement in both the activity and hydrogenation selectivity. X-ray photoelectron spectroscopy experiments on bimetallic thin films and density functional theory calculations revealed that the C18-SAM kinetically stabilized Cu at the surface under hydrogenation conditions. These results indicate that thiolate monolayers can be used to control surface bimetallic composition to improve catalytic performance.
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Affiliation(s)
- Simon H Pang
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Nicole E Love
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - J Will Medlin
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80309, United States
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39
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Sn surface-enriched Pt–Sn bimetallic nanoparticles as a selective and stable catalyst for propane dehydrogenation. J Catal 2014. [DOI: 10.1016/j.jcat.2014.09.013] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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40
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Wang S, Zhang D, Ma Y, Zhang H, Gao J, Nie Y, Sun X. Aqueous solution synthesis of Pt-M (M = Fe, Co, Ni) bimetallic nanoparticles and their catalysis for the hydrolytic dehydrogenation of ammonia borane. ACS APPLIED MATERIALS & INTERFACES 2014; 6:12429-12435. [PMID: 25058566 DOI: 10.1021/am502335j] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Platinum-based bimetallic nanocatalysts have attracted much attention due to their high-efficiency catalytic performance in energy-related applications such as fuel cell and hydrogen storage, for example, the hydrolytic dehydrogenation of ammonia borane (AB). In this work, a simple and green method has been demonstrated to successfully prepare Pt-M (M = Fe, Co, Ni) NPs with tunable composition (nominal Pt/M atomic ratios of 4:1, 1:1, and 1:4) in aqueous solution under mild conditions. All Pt-M NPs with a small size of 3-5 nm show a Pt fcc structure, suggesting the bimetallic formation (alloy and/or partial core-shell), examined by transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray absorption fine structure (XAFS) analysis. The catalytic activities of Pt-M NPs in the hydrolytic dehydrogenation of AB reveal that Pt-Ni NPs with a ratio of 4:1 show the best catalytic activity and even better than that of pure Pt NPs when normalized to Pt molar amount. The Ni oxidation state in Pt-Ni NPs has been suggested to be responsible for the corresponding catalytic activity for hydrolytic dehydrogenation of AB by XAFS study. This strategy for the synthesis of Pt-M NPs is simple and environmentally benign in aqueous solution with the potential for scale-up preparation and the in situ catalytic reaction.
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Affiliation(s)
- Shuai Wang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou, Jiangsu 215123, People's Republic of China
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41
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Guo W, Vlachos DG. On factors controlling activity of submonolayer bimetallic catalysts: nitrogen desorption. J Chem Phys 2014; 140:014703. [PMID: 24410233 DOI: 10.1063/1.4855235] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
We model N2 desorption on submonolayer bimetallic surfaces consisting of Co clusters on Pt(111) via first-principles density functional theory-based kinetic Monte Carlo simulations. We find that submonolayer structures are essential to rationalize the high activity of these bimetallics in ammonia decomposition. We show that the N2 desorption temperature on Co∕Pt(111) is about 100 K higher than that on Ni∕Pt(111), despite Co∕Pt(111) binding N weaker at low N coverages. Co∕Pt(111) has substantially different lateral interactions than single metals and Ni∕Pt. The lateral interactions are rationalized with the d-band center theory. The activity of bimetallic catalysts is the result of heterogeneity of binding energies and reaction barriers among sites, and the most active site can differ on various bimetallics. Our results are in excellent agreement with experimental data and demonstrate for the first time that the zero-coverage descriptor, used until now, for catalyst activity is inadequate due not only to lacking lateral interactions but importantly to presence of multiple sites and a complex interplay of thermodynamics (binding energies, occupation) and kinetics (association barriers) on those sites.
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Affiliation(s)
- Wei Guo
- Center for Catalytic Science and Technology, Catalysis Center for Energy Innovation, Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, USA
| | - Dionisios G Vlachos
- Center for Catalytic Science and Technology, Catalysis Center for Energy Innovation, Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, USA
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Rahman MM, Church TL, Variava MF, Harris AT, Minett AI. Bimetallic Pt–Ni composites on ceria-doped alumina supports as catalysts in the aqueous-phase reforming of glycerol. RSC Adv 2014. [DOI: 10.1039/c4ra00355a] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Adding Ni to a supported Pt catalyst for aqueous phase reforming allowed the Pt content to be reduced to one third, with a slight increase in H2 yield.
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Affiliation(s)
- M. M. Rahman
- School of Chemical and Bio-molecular Engineering
- University of Sydney
- Sydney, Australia
| | - Tamara L. Church
- School of Chemical and Bio-molecular Engineering
- University of Sydney
- Sydney, Australia
| | - Meherzad F. Variava
- School of Chemical and Bio-molecular Engineering
- University of Sydney
- Sydney, Australia
| | - Andrew T. Harris
- School of Chemical and Bio-molecular Engineering
- University of Sydney
- Sydney, Australia
| | - Andrew I. Minett
- School of Chemical and Bio-molecular Engineering
- University of Sydney
- Sydney, Australia
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43
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Porosoff MD, Yu W, Chen JG. Challenges and opportunities in correlating bimetallic model surfaces and supported catalysts. J Catal 2013. [DOI: 10.1016/j.jcat.2013.05.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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44
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Wang T, Lonergan W, Chen JG. Selection of oxide supports to anchor desirable bimetallic structures for ethanol reforming and 1,3-butadiene hydrogenation. CHINESE JOURNAL OF CATALYSIS 2013. [DOI: 10.1016/s1872-2067(12)60715-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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45
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Guo W, Stamatakis M, Vlachos DG. Design Principles of Heteroepitaxial Bimetallic Catalysts. ACS Catal 2013. [DOI: 10.1021/cs4005166] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wei Guo
- Center
for Catalytic Science and Technology, Department of Chemical and Biomolecular
Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Michail Stamatakis
- Center
for Catalytic Science and Technology, Department of Chemical and Biomolecular
Engineering, University of Delaware, Newark, Delaware 19716, United States
- Department
of Chemical Engineering, University College London, Torrington Place, London WC1E 7JE, U.K
| | - Dionisios G. Vlachos
- Center
for Catalytic Science and Technology, Department of Chemical and Biomolecular
Engineering, University of Delaware, Newark, Delaware 19716, United States
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46
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Tupy SA, Chen JG, Vlachos DG. Comparison of Ethylene Glycol Steam Reforming Over Pt and NiPt Catalysts on Various Supports. Top Catal 2013. [DOI: 10.1007/s11244-013-0099-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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47
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Guo W, Vlachos DG. Effect of local metal microstructure on adsorption on bimetallic surfaces: Atomic nitrogen on Ni/Pt(111). J Chem Phys 2013; 138:174702. [DOI: 10.1063/1.4803128] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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48
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Lu J, Martinez-Macias C, Aydin C, Browning ND, Gates BC. Zeolite-supported bimetallic catalyst: controlling selectivity of rhodium complexes by nearby iridium complexes. Catal Sci Technol 2013. [DOI: 10.1039/c3cy00113j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Wang T, Mpourmpakis G, Lonergan WW, Vlachos DG, Chen JG. Effect of oxide supports in stabilizing desirable Pt–Ni bimetallic structures for hydrogenation and reforming reactions. Phys Chem Chem Phys 2013; 15:12156-64. [DOI: 10.1039/c3cp44688c] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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