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Hasan MH, McCrum IT. pKa as a Predictive Descriptor for Electrochemical Anion Adsorption. Angew Chem Int Ed Engl 2024; 63:e202313580. [PMID: 38340075 DOI: 10.1002/anie.202313580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 02/09/2024] [Accepted: 02/09/2024] [Indexed: 02/12/2024]
Abstract
The adsorption of anions onto metal surfaces is important in many applications including effective (electro)catalyst design, metal surface modification, and contaminant removal in wastewater treatment. In electrocatalysis, anions can be both reactive intermediates or site-blocking spectators, where their adsorption strength therefore dictates the rate of reaction. In this work, we have measured the adsorption energy of a series of carboxylic acids on a Pt (111) single-crystal electrode surface from aqueous solution. We find that the adsorption strength of the carboxylate anion is linearly correlated with its acid-dissociation constant (pKa) and therefore the heterolytic O-H bond dissociation strength in solution. Using density functional theory modeling, we split the anion adsorption energy into a sum of the adsorption energy and electron affinity of a neutral (carboxyl) radical. Surprisingly, the adsorption energy of the carboxyl radicals are similar and therefore the large difference in electron affinity is what dictates anion adsorption strength; the greater the cost in energy to remove the electron from the anion upon adsorption, the weaker its binding. Therefore, at least within a class of anions with similar structure and surface binding atoms, both electron affinity and acidity are predictive descriptors of adsorption strength.
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Affiliation(s)
- Mohammad H Hasan
- Department of Chemical and Biomolecular Engineering, Clarkson University, 8 Clarkson Ave., Potsdam, NY 13699
| | - Ian T McCrum
- Department of Chemical and Biomolecular Engineering, Clarkson University, 8 Clarkson Ave., Potsdam, NY 13699
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2
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Jones WD. Selectivity in the activation of C H bonds by rhodium and iridium complexes. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2022. [DOI: 10.1016/bs.adomc.2022.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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3
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Kolb MJ, Loffreda D, Sautet P, Calle-Vallejo F. Structure-sensitive scaling relations among carbon-containing species and their possible impact on CO2 electroreduction. J Catal 2021. [DOI: 10.1016/j.jcat.2020.12.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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4
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Campbell CT. Energies of Adsorbed Catalytic Intermediates on Transition Metal Surfaces: Calorimetric Measurements and Benchmarks for Theory. Acc Chem Res 2019; 52:984-993. [PMID: 30879291 DOI: 10.1021/acs.accounts.8b00579] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Better catalysts and electrocatalysts are essential for the production and use of clean fuels with less pollution and improved energy efficiency, for making chemicals with less energy and environmental impact, for pollution abatement, and for many other future technologies needed to achieve environmentally friendlier energy supply and chemicals industry. Crucial for rational design of better catalyst and electrocatalyst materials is knowledge of the energies of elementary chemical reactions on late transition metal surfaces. This knowledge would also aid in designing more efficient and stable photocatalysts and batteries for harvesting and storing solar energy. These are all crucial for sustainable living with high quality. Herein, I review measurements of surface reaction energies involving many of the most common adsorbates formed as intermediates on late transition metal surfaces in catalytic and electrocatalytic reactions of interest for energy and environmental technologies. I focus on calorimetric measurements of the heat of molecular and dissociative adsorption of gases on single crystals (i.e., single crystal adsorption calorimetry, or SCAC) that allow the heats of formation of adsorbed intermediates in well-defined structures to be directly determined. Adsorption reactions are often irreversible, and in such cases SCAC is required to get these heats, since the other methods for measuring adsorption energies (equilibrium adsorption isotherms and temperature-programmed desorption) work only for reversible adsorption. Common examples of irreversible adsorption reactions are ones that produce adsorbed molecular fragments or adsorbed molecules such as olefins and aromatic molecules that bind very strongly to non-noble metals. When the heats of formation of different adsorbed molecular fragments are compared to each other, and to their values on different metal surfaces, they reveal which properties of the metal surface and the molecular fragments determine metal-adsorbate bond strengths, and clarify differences in catalytic reactivity between different metals. When combined with earlier adsorption energy measurements, these heats also provide a database of reliable energies of adsorbed catalytic intermediates that serve as crucial benchmarks to guide the development of improved computational methods for calculating the energetics of elementary steps on late transition metal surfaces (i.e., reaction energies and activation barriers), such as density functional theory. The energy accuracy of such computational estimates is crucial for the future of catalysis research and catalyst discovery.
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Affiliation(s)
- Charles T. Campbell
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
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5
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Rosen AS, Notestein JM, Snurr RQ. Structure–Activity Relationships That Identify Metal–Organic Framework Catalysts for Methane Activation. ACS Catal 2019. [DOI: 10.1021/acscatal.8b05178] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Andrew S. Rosen
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Justin M. Notestein
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Randall Q. Snurr
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
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Luo WZ, Chen GH, Xiao ST, Wang Q, Huang ZK, Wang LY. The enzyme-like catalytic hydrogen abstraction reaction mechanisms of cyclic hydrocarbons with magnesium-diluted Fe-MOF-74. RSC Adv 2019; 9:23622-23632. [PMID: 35530594 PMCID: PMC9069451 DOI: 10.1039/c9ra04495g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Accepted: 07/22/2019] [Indexed: 11/21/2022] Open
Abstract
Enzymatic heme and non-heme Fe(iv)–O species usually play an important role in hydrogen abstraction of biocatalytic reactions, yet duplicating the reactivity in biomimicry remains a great challenge. Based on Xiao et al.'s experimental work [Nat. Chem., 2014, 6(7), 590], we theoretically found that in the presence of the oxidant N2O, the enzyme-like metal organic framework, i.e., magnesium-diluted Fe-MOF-74 [Fe/(Mg)-MOF-74] can activate the C–H bonds of 1,4-cyclohexadiene (CHD) into benzene with a two-step hydrogen abstraction mechanism based on the density functional theory (DFT) level. It is shown that the first transition state about the cleavage of the N–O bond of N2O to form the Fe(iv)–O species is the rate-determining step with activation enthalpy of 19.4 kcal mol−1 and the complete reaction is exothermic by 62.8 kcal mol−1 on quintet rather than on triplet PES. In addition, we proposed a rebound mechanism of cyclic cyclohexane (CHA) hydroxylation to cyclohexanol which has not been studied experimentally. Note that the activation enthalpies on the first hydrogen abstraction for both cyclic CHD and cyclohexane are just 8.1 and 3.5 kcal mol−1, respectively, which are less than that of 13.9 kcal mol−1 for chained ethane. Most importantly, for the hydrogen abstraction of methane catalyzed by M/(Mg)-MOF-74 (M = Cu, Ni, Fe, and Co), we found that the activation enthalpies versus the C–H bond length of methane of TSs, NPA charge of the reacting oxyl atom have linear relationships with different slopes, i.e., shorter C–H bond and less absolute value of NPA charge of oxyl atom are associated with lower activation enthalpy; while for the activation of methane, ethane, propane and CHD catalyzed by Fe/(Mg)-MOF-74, there also exists positive correlations between activation enthalpies, bond dissociation energies (BDEs) and C–H bond lengths in TSs, respectively. We hope the present theoretical study may provide the guideline to predict the performance of MOFs in C–H bond activation reactions. The enzyme-like catalytic hydrogen abstraction reaction of cyclic hydrocarbons.![]()
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Affiliation(s)
- Wen-zhi Luo
- Department of Chemistry
- Shantou University
- China
| | | | - Song-tao Xiao
- Institute of Radiochemistry
- China Institute of Atomic Energy (CIAE)
- Beijing
- People's Republic of China
| | - Qiang Wang
- Department of Applied Chemistry
- College of Science
- Nanjing Tech University
- Nanjing 211816
- People's Republic of China
| | - Ze-kun Huang
- The Wolfson Department of Chemical Engineering
- Israel Institute of Technology
- Israel
| | - Ling-yu Wang
- Institute of Radiochemistry
- China Institute of Atomic Energy (CIAE)
- Beijing
- People's Republic of China
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Carey SJ, Zhao W, Campbell CT. Bond Energies of Adsorbed Intermediates to Metal Surfaces: Correlation with Hydrogen–Ligand and Hydrogen–Surface Bond Energies and Electronegativities. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201811225] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Spencer J. Carey
- University of Washington Department of Chemistry Seattle WA 98195-1700 USA
| | - Wei Zhao
- University of Washington Department of Chemistry Seattle WA 98195-1700 USA
- Current address: Institute for Advanced Study Shenzhen University Shenzhen Guangdong 518060 China
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Carey SJ, Zhao W, Campbell CT. Bond Energies of Adsorbed Intermediates to Metal Surfaces: Correlation with Hydrogen–Ligand and Hydrogen–Surface Bond Energies and Electronegativities. Angew Chem Int Ed Engl 2018; 57:16877-16881. [DOI: 10.1002/anie.201811225] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 10/22/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Spencer J. Carey
- University of Washington Department of Chemistry Seattle WA 98195-1700 USA
| | - Wei Zhao
- University of Washington Department of Chemistry Seattle WA 98195-1700 USA
- Current address: Institute for Advanced Study Shenzhen University Shenzhen Guangdong 518060 China
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9
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Carey SJ, Zhao W, Harman E, Baumann AK, Mao Z, Zhang W, Campbell CT. Energetics of Adsorbed Methanol and Methoxy on Ni(111): Comparisons to Pt(111). ACS Catal 2018. [DOI: 10.1021/acscatal.8b02992] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Spencer J. Carey
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Wei Zhao
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Elizabeth Harman
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Ann-Katrin Baumann
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Zhongtian Mao
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Wei Zhang
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Charles T. Campbell
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
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10
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Abdelrahman OA, Heyden A, Bond JQ. Microkinetic analysis of C3–C5 ketone hydrogenation over supported Ru catalysts. J Catal 2017. [DOI: 10.1016/j.jcat.2017.01.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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11
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Latimer AA, Kulkarni AR, Aljama H, Montoya JH, Yoo JS, Tsai C, Abild-Pedersen F, Studt F, Nørskov JK. Understanding trends in C-H bond activation in heterogeneous catalysis. NATURE MATERIALS 2017; 16:225-229. [PMID: 27723737 DOI: 10.1038/nmat4760] [Citation(s) in RCA: 205] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Accepted: 08/26/2016] [Indexed: 05/20/2023]
Abstract
While the search for catalysts capable of directly converting methane to higher value commodity chemicals and liquid fuels has been active for over a century, a viable industrial process for selective methane activation has yet to be developed. Electronic structure calculations are playing an increasingly relevant role in this search, but large-scale materials screening efforts are hindered by computationally expensive transition state barrier calculations. The purpose of the present letter is twofold. First, we show that, for the wide range of catalysts that proceed via a radical intermediate, a unifying framework for predicting C-H activation barriers using a single universal descriptor can be established. Second, we combine this scaling approach with a thermodynamic analysis of active site formation to provide a map of methane activation rates. Our model successfully rationalizes the available empirical data and lays the foundation for future catalyst design strategies that transcend different catalyst classes.
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Affiliation(s)
- Allegra A Latimer
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, 450 Serra Mall Stanford, California 94305, USA
| | - Ambarish R Kulkarni
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, 450 Serra Mall Stanford, California 94305, USA
| | - Hassan Aljama
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, 450 Serra Mall Stanford, California 94305, USA
| | - Joseph H Montoya
- Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA
| | - Jong Suk Yoo
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, 450 Serra Mall Stanford, California 94305, USA
| | - Charlie Tsai
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, 450 Serra Mall Stanford, California 94305, USA
| | - Frank Abild-Pedersen
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, 450 Serra Mall Stanford, California 94305, USA
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Felix Studt
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, 450 Serra Mall Stanford, California 94305, USA
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Jens K Nørskov
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, 450 Serra Mall Stanford, California 94305, USA
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
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12
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Yuwen J, Jiao Y, Brennessel WW, Jones WD. Determination of Rhodium–Alkoxide Bond Strengths in Tp′Rh(PMe3)(OR)H. Inorg Chem 2016; 55:9482-91. [DOI: 10.1021/acs.inorgchem.6b01992] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jing Yuwen
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Yunzhe Jiao
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - William W. Brennessel
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - William D. Jones
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
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13
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14
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Calle-Vallejo F, Loffreda D, Koper MTM, Sautet P. Introducing structural sensitivity into adsorption–energy scaling relations by means of coordination numbers. Nat Chem 2015; 7:403-10. [DOI: 10.1038/nchem.2226] [Citation(s) in RCA: 474] [Impact Index Per Article: 52.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 03/02/2015] [Indexed: 12/24/2022]
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16
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Rodriguez-Reyes JCF, Siler CGF, Liu W, Tkatchenko A, Friend CM, Madix RJ. van der Waals Interactions Determine Selectivity in Catalysis by Metallic Gold. J Am Chem Soc 2014; 136:13333-40. [DOI: 10.1021/ja506447y] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Juan Carlos F. Rodriguez-Reyes
- Department
of Industrial Chemical Engineering, Universidad de Ingeniería y Tecnología, Avenida Cascanueces 2221, Lima 43, Peru
| | | | - Wei Liu
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195, Berlin, Germany
| | - Alexandre Tkatchenko
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195, Berlin, Germany
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17
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Schauermann S, Silbaugh TL, Campbell CT. Single-Crystal Adsorption Calorimetry on Well-Defined Surfaces: From Single Crystals to Supported Nanoparticles. CHEM REC 2014; 14:759-74. [DOI: 10.1002/tcr.201402022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Indexed: 11/10/2022]
Affiliation(s)
- Swetlana Schauermann
- Fritz-Haber-Institut der Max-Planck-Gesellschaft; Faradayweg 4-6 14195 Berlin Germany
| | - Trent L. Silbaugh
- Department of Chemical Engineering; University of Washington; Seattle Washington 98195-1750 USA
| | - Charles T. Campbell
- Department of Chemical Engineering; University of Washington; Seattle Washington 98195-1750 USA
- Department of Chemistry; University of Washington; Seattle Washington 98195-1700 USA
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18
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Flaherty DW, Hibbitts DD, Iglesia E. Metal-catalyzed C-C bond cleavage in alkanes: effects of methyl substitution on transition-state structures and stability. J Am Chem Soc 2014; 136:9664-76. [PMID: 24961991 DOI: 10.1021/ja5037429] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Methyl substituents at C-C bonds influence hydrogenolysis rates and selectivities of acyclic and cyclic C2-C8 alkanes on Ir, Rh, Ru, and Pt catalysts. C-C cleavage transition states form via equilibrated dehydrogenation steps that replace several C-H bonds with C-metal bonds, desorb H atoms (H*) from saturated surfaces, and form λ H2(g) molecules. Activation enthalpies (ΔH(‡)) and entropies (ΔS(‡)) and λ values for (3)C-(x)C cleavage are larger than for (2)C-(2)C or (2)C-(1)C bonds, irrespective of the composition of metal clusters or the cyclic/acyclic structure of the reactants. (3)C-(x)C bonds cleave through α,β,γ- or α,β,γ,δ-bound transition states, as indicated by the agreement between measured activation entropies and those estimated for such structures using statistical mechanics. In contrast, less substituted C-C bonds involve α,β-bound species with each C atom bound to several surface atoms. These α,β configurations weaken C-C bonds through back-donation to antibonding orbitals, but such configurations cannot form with (3)C atoms, which have one C-H bond and thus can form only one C-M bond. (3)C-(x)C cleavage involves attachment of other C atoms, which requires endothermic C-H activation and H* desorption steps that lead to larger ΔH(‡) values but also larger ΔS(‡) values (by forming more H2(g)) than for (2)C-(2)C and (2)C-(1)C bonds, irrespective of alkane size (C2-C8) or cyclic/acyclic structure. These data and their mechanistic interpretation indicate that low temperatures and high H2 pressures favor cleavage of less substituted C-C bonds and form more highly branched products from cyclic and acyclic alkanes. Such interpretations and catalytic consequences of substitution seem also relevant to C-X cleavage (X = S, N, O) in desulfurization, denitrogenation, and deoxygenation reactions.
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Affiliation(s)
- David W Flaherty
- Department of Chemical Engineering, University of California at Berkeley , Berkeley, California 94720, United States
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19
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Montemore MM, Medlin JW. A unified picture of adsorption on transition metals through different atoms. J Am Chem Soc 2014; 136:9272-5. [PMID: 24931651 DOI: 10.1021/ja504193w] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A key issue in catalyst design is understanding how adsorption energies of surface intermediates vary across both different surfaces and various types of adsorbing atoms. In this work, we examine trends in adsorption energies of a wide variety of adsorbates that attach to transition metal surfaces through different atoms (H, C, N, O, F, S, etc.). All adsorption energies, as calculated by density functional theory, have nearly identical dependence on the metal bands (the d-band center and the number of p electrons) and the adsorbates' highest occupied molecular orbital (HOMO) energies. However, the dependence on the adsorbate-surface coupling and the d-band filling varies with the energy of the HOMO. Adsorbates with low HOMOs experience a higher level of Pauli repulsion than those with higher HOMOs. This leads to a classification of adsorbates into two groups, where adsorption energies in each group correlate. Even across the groups, adsorbates with similar HOMO energies are likely to have correlated adsorption energies.
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Affiliation(s)
- Matthew M Montemore
- Department of Mechanical Engineering, University of Colorado Boulder , UCB 427 Boulder, Colorado 80309, United States
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20
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Montemore MM, Medlin JW. Scaling relations between adsorption energies for computational screening and design of catalysts. Catal Sci Technol 2014. [DOI: 10.1039/c4cy00335g] [Citation(s) in RCA: 189] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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