151
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Stegelmann C, Andreasen A, Campbell CT. Degree of Rate Control: How Much the Energies of Intermediates and Transition States Control Rates. J Am Chem Soc 2009; 131:8077-82. [PMID: 19341242 DOI: 10.1021/ja9000097] [Citation(s) in RCA: 299] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Carsten Stegelmann
- Department of Chemistry and Applied Engineering Science, Aalborg University, Niels Bohrs Vej 8 6700 Esbjerg, Denmark, Materials Research Department, National Laboratory for Sustainable Energy, Risø DTU, Frederiksborgvej 399, DK-4000 Roskilde, Denmark, and Department of Chemistry, University of Washington, Seattle, Washington 98195-1700
| | - Anders Andreasen
- Department of Chemistry and Applied Engineering Science, Aalborg University, Niels Bohrs Vej 8 6700 Esbjerg, Denmark, Materials Research Department, National Laboratory for Sustainable Energy, Risø DTU, Frederiksborgvej 399, DK-4000 Roskilde, Denmark, and Department of Chemistry, University of Washington, Seattle, Washington 98195-1700
| | - Charles T. Campbell
- Department of Chemistry and Applied Engineering Science, Aalborg University, Niels Bohrs Vej 8 6700 Esbjerg, Denmark, Materials Research Department, National Laboratory for Sustainable Energy, Risø DTU, Frederiksborgvej 399, DK-4000 Roskilde, Denmark, and Department of Chemistry, University of Washington, Seattle, Washington 98195-1700
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152
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153
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Ho TC. Kinetic Modeling of Large‐Scale Reaction Systems. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2008. [DOI: 10.1080/01614940802019425] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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154
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Kozuch S, Shaik S. Kinetic-Quantum Chemical Model for Catalytic Cycles: The Haber−Bosch Process and the Effect of Reagent Concentration. J Phys Chem A 2008; 112:6032-41. [DOI: 10.1021/jp8004772] [Citation(s) in RCA: 249] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Sason Shaik
- Institute of Chemistry and The Lise Meitner-Minerva Center for Computational Quantum Chemistry, Givat Ram Campus, Jerusalem 91904, Israel
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155
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Bhan A, Nicholas Delgass W. Propane Aromatization over HZSM‐5 and Ga/HZSM‐5 Catalysts. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2008. [DOI: 10.1080/01614940701804745] [Citation(s) in RCA: 159] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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156
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Kozuch S, Shaik S. A combined kinetic-quantum mechanical model for assessment of catalytic cycles: application to cross-coupling and Heck reactions. J Am Chem Soc 2006; 128:3355-65. [PMID: 16522117 DOI: 10.1021/ja0559146] [Citation(s) in RCA: 350] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The efficiency of catalytic cycles is measured by their turnover frequency (TOF). The degree of TOF control determines which states contribute most to the rate of the cycle, and thus indicates the steps that have the highest impact on the cycle. A kinetic model developed by Christiansen (Christiansen, J. A. Adv. Catal. 1953, 5, 311) for catalytic cycles is implemented here in a form that utilizes state energies. This enables one to assess the efficiency of quantum mechanically computed catalytic cycles like the palladium-catalyzed cross-coupling and Heck reactions, to test alternative hypotheses, and to make some predictions. This implementation can also account for effects such as Sabatier's volcano curve for heterogeneous catalysis. The model leads to a dependence of the TOF for any cycle on the "corrected" energy span quantity, deltaE, whose precise expression depends on the location of the summit and trough of the cycle in the step sequence of the cycle. Thus, knowing the highest energy transition state, the most abundant reaction intermediate, and the reaction energy enables one to make quick predictions about relative efficiency of cycles. At the same time, the degree of TOF control determines which states contribute most to the rate of reaction, and thus indicates the values to be included in the calculation of the energetic span and the steps that may be tinkered with to improve the cycle.
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Affiliation(s)
- Sebastian Kozuch
- Department of Organic Chemistry and The Lise Meitner-Minerva Center for Computational Quantum Chemistry, Givat Ram Campus, Jerusalem 91904, Israel
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157
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Kandoi S, Greeley J, Sanchez-Castillo MA, Evans ST, Gokhale AA, Dumesic JA, Mavrikakis M. Prediction of Experimental Methanol Decomposition Rates on Platinum from First Principles. Top Catal 2006. [DOI: 10.1007/s11244-006-0001-1] [Citation(s) in RCA: 114] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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158
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Abstract
Surface strain plays a major role in determining the rate limiting step and catalytic activity of platinum for CO oxidation.
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Affiliation(s)
- Lars Grabow
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, WI 53706, USA
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159
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Bocquet ML, Loffreda D. Ethene Epoxidation Selectivity Inhibited by Twisted Oxametallacycle: A DFT Study on Ag Surface-Oxide. J Am Chem Soc 2005; 127:17207-15. [PMID: 16332067 DOI: 10.1021/ja051397f] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Competitive ethene oxidation pathways are presented for a p(4 x 4) surface-oxide phase on Ag(111) obtained from density functional theory (DFT) calculations. Both parallel routes are found to proceed from a common oxametallacycle intermediate (OMME) in agreement with previous mechanistic studies on low coverage O adatom phase, although acetaldehyde (AcH) is favored by almost 2 kcal/mol. An even more striking difference with pure metal surface appears with the oxide regeneration pathways, which are found non-rate controlling. Furthermore, a kinetic model is developed on the basis of these DFT calculations and yields 96% selectivity in favor of AcH for a simulation in realistic catalytic conditions (600 K and respective partial pressures of 1 atm for ethene and oxygen reactants). As a key finding, this low ethene epoxide selectivity is proposed to be directly linked to the conformational barrier of the pivotal intermediate. In fact, the elasticity of the ultrathin oxide adlayer enables a twisted OMME structure as a true minimum, which agrees well with orbital prerequisite of the concerted H migration toward AcH. On the contrary, the desired selective ring closure forming ethene epoxide (EO) requires conformational inversion although the eclipsed form lies 2 kcal/mol above.
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Affiliation(s)
- Marie-Laure Bocquet
- Laboratoire de chimie, UMR CNRS 5182, Ecole Normale Supérieure de Lyon, 46 Allée d'Italie, F-69364 Lyon, Cedex 07, France.
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160
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161
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Agarwal N, Sanchez-Castillo MA, Cortright RD, Madon RJ, Dumesic JA. Catalytic Cracking of Isobutane and 2-Methylhexane over USY Zeolite: Identification of Kinetically Significant Reaction Steps. Ind Eng Chem Res 2002. [DOI: 10.1021/ie020041z] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nitin Agarwal
- Department of Chemical Engineering, University of Wisconsin, Madison, Wisconsin 53706, and Engelhard Corporation, 101 Wood Avenue, Iselin, New Jersey 08830
| | - Marco A. Sanchez-Castillo
- Department of Chemical Engineering, University of Wisconsin, Madison, Wisconsin 53706, and Engelhard Corporation, 101 Wood Avenue, Iselin, New Jersey 08830
| | - Randy D. Cortright
- Department of Chemical Engineering, University of Wisconsin, Madison, Wisconsin 53706, and Engelhard Corporation, 101 Wood Avenue, Iselin, New Jersey 08830
| | - Rostam J. Madon
- Department of Chemical Engineering, University of Wisconsin, Madison, Wisconsin 53706, and Engelhard Corporation, 101 Wood Avenue, Iselin, New Jersey 08830
| | - James A. Dumesic
- Department of Chemical Engineering, University of Wisconsin, Madison, Wisconsin 53706, and Engelhard Corporation, 101 Wood Avenue, Iselin, New Jersey 08830
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162
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Reaction Kinetics Study and Analysis of Reaction Schemes for Isobutane Conversion over USY Zeolite. J Catal 2002. [DOI: 10.1006/jcat.2001.3419] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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163
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Reply to Finding the Rate-Determining Step in a Mechanism: Comparing DeDonder Relations with the “Degree of Rate Control”. J Catal 2001. [DOI: 10.1006/jcat.2001.3397] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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164
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165
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Olsson L, Persson H, Fridell E, Skoglundh M, Andersson B. A Kinetic Study of NO Oxidation and NOx Storage on Pt/Al2O3 and Pt/BaO/Al2O3. J Phys Chem B 2001. [DOI: 10.1021/jp010324p] [Citation(s) in RCA: 263] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Louise Olsson
- Department of Chemical Reaction Engineering, Competence Centre for Catalysis, Department of Applied Physics, and Department of Applied Surface Chemistry, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| | - Hans Persson
- Department of Chemical Reaction Engineering, Competence Centre for Catalysis, Department of Applied Physics, and Department of Applied Surface Chemistry, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| | - Erik Fridell
- Department of Chemical Reaction Engineering, Competence Centre for Catalysis, Department of Applied Physics, and Department of Applied Surface Chemistry, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| | - Magnus Skoglundh
- Department of Chemical Reaction Engineering, Competence Centre for Catalysis, Department of Applied Physics, and Department of Applied Surface Chemistry, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| | - Bengt Andersson
- Department of Chemical Reaction Engineering, Competence Centre for Catalysis, Department of Applied Physics, and Department of Applied Surface Chemistry, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
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166
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Kinetics of heterogeneous catalytic reactions: Analysis of reaction schemes. ADVANCES IN CATALYSIS 2001. [DOI: 10.1016/s0360-0564(02)46023-3] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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