1
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Gutiérrez-Tarriño S, Gaona-Miguélez J, Oña-Burgos P. Tailoring the electron density of cobalt oxide clusters to provide highly selective superoxide and peroxide species for aerobic cyclohexane oxidation. Dalton Trans 2021; 50:15370-15379. [PMID: 34642710 DOI: 10.1039/d1dt02347k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The catalytic aerobic cyclohexane oxidation to cyclohexanol and cyclohexanone (KA oil) is an industrially relevant reaction. This work is focused on the synthesis of tailor-made catalysts based on the well-known Co4O4 core in order to successfully deal with cyclohexane oxidation reaction. The catalytic activity and selectivity of the synthesized catalysts can be correlated with the electronic density of the cluster, modulated by changing the organic ligands. This is not trivial in cyclohexane oxidation. Furthermore, the reaction mechanism is discussed on the basis of kinetics and spin trapping experiments, confirming that the electronic density of the catalyst has a clear influence on the distribution of the reaction products. In addition, in situ Raman spectroscopy was used to characterize the oxygen species formed on the cobalt cluster during the oxidation reaction. Altogether, it can be concluded that the catalyst with the highest oxidation potential promotes the formation of peroxide and superoxide species, which is the best way to oxidize inactivated CH bonds in alkanes. Finally, based on the results of the mechanistic studies, the contribution of these cobalt oxide clusters in each single reaction step of the whole process has been proposed.
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Affiliation(s)
- Silvia Gutiérrez-Tarriño
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Avda. de los Naranjos s/n, 46022 Valencia, Spain.
| | - José Gaona-Miguélez
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Avda. de los Naranjos s/n, 46022 Valencia, Spain.
| | - Pascual Oña-Burgos
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Avda. de los Naranjos s/n, 46022 Valencia, Spain. .,Department of Chemistry and Physics, Research Centre CIAIMBITAL, University of Almería, Ctra. Sacramento, s/n, 04120 Almería, Spain
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2
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Bai J, Huang J, Jiang Q, Li Y, Wang H, Yu H, Zhang Q, Cao Y, Peng F. Radical Propagation Facilitating Aerobic Oxidation of Substituted Aromatics Promoted by Tert‐Butyl Hydroperoxide. ChemistrySelect 2021. [DOI: 10.1002/slct.202101805] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Jiatong Bai
- School of Chemistry and Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product Technology South China University of Technology Guangzhou 510640 China
| | - Jiangnan Huang
- School of Chemistry and Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product Technology South China University of Technology Guangzhou 510640 China
| | - Qi Jiang
- School of Chemistry and Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product Technology South China University of Technology Guangzhou 510640 China
| | - Yuhang Li
- School of Chemistry Sun Yat-sen University Guangzhou 510275 China
| | - Hongjuan Wang
- School of Chemistry and Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product Technology South China University of Technology Guangzhou 510640 China
| | - Hao Yu
- School of Chemistry and Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product Technology South China University of Technology Guangzhou 510640 China
| | - Qiao Zhang
- Guangzhou Key Laboratory for New Energy and Green Catalysis School of Chemistry and Chemical Engineering Guangzhou University Guangzhou 510006 China
| | - Yonghai Cao
- School of Chemistry and Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product Technology South China University of Technology Guangzhou 510640 China
| | - Feng Peng
- Guangzhou Key Laboratory for New Energy and Green Catalysis School of Chemistry and Chemical Engineering Guangzhou University Guangzhou 510006 China
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3
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Su Y, Li Y, Chen Z, Huang J, Wang H, Yu H, Cao Y, Peng F. New Understanding of Selective Aerobic Oxidation of Ethylbenzene Catalyzed by Nitrogen‐doped Carbon Nanotubes. ChemCatChem 2020. [DOI: 10.1002/cctc.202001503] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yongzhao Su
- School of Chemistry and Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product Technology South China University of Technology Guangzhou 510640 P. R. China
| | - Yuhang Li
- School of Chemistry and Chemical Engineering Guangzhou Key Laboratory for New Energy and Green Catalysis Guangzhou University Guangzhou 510006 P. R. China
- School of Chemistry Sun Yat-sen University Guangzhou 510275 P. R. China
| | - Zhicheng Chen
- School of Chemistry and Chemical Engineering Guangzhou Key Laboratory for New Energy and Green Catalysis Guangzhou University Guangzhou 510006 P. R. China
| | - Jiangnan Huang
- School of Chemistry and Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product Technology South China University of Technology Guangzhou 510640 P. R. China
| | - Hongjuan Wang
- School of Chemistry and Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product Technology South China University of Technology Guangzhou 510640 P. R. China
| | - Hao Yu
- School of Chemistry and Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product Technology South China University of Technology Guangzhou 510640 P. R. China
| | - Yonghai Cao
- School of Chemistry and Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product Technology South China University of Technology Guangzhou 510640 P. R. China
| | - Feng Peng
- School of Chemistry and Chemical Engineering Guangzhou Key Laboratory for New Energy and Green Catalysis Guangzhou University Guangzhou 510006 P. R. China
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4
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Recent progresses in polymer supported cobalt complexes/nanoparticles for sustainable and selective oxidation reactions. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.110775] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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5
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Perkel AL, Voronina SG. Mechanisms of the formation of carboxylic acids and their anhydrides during the liquid-phase oxidation of cyclohexane. Russ Chem Bull 2019. [DOI: 10.1007/s11172-019-2582-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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6
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Perkel AL, Voronina SG. Liquid-phase oxidation of cyclohexane. Cyclohexyl hydroperoxide, cyclohexanol, and cyclohexanone, mechanisms of formation and transformation. Russ Chem Bull 2019. [DOI: 10.1007/s11172-019-2443-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Density functional theory study of selective aerobic oxidation of cyclohexane: the roles of acetic acid and cobalt ion. J Mol Model 2019; 25:71. [PMID: 30788646 DOI: 10.1007/s00894-019-3949-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 01/29/2019] [Indexed: 10/27/2022]
Abstract
A computational study of cyclohexane autoxidation and catalytic oxidation to a cyclohexyl hydroperoxide intermediate (CyOOH), cyclohexanol, and cyclohexanone has been conducted using a hybrid density functional theory method. The activation of cyclohexane and O2 is the rate-determining step in the formation of CyOOH due to its relatively high energy barrier of 41.2 kcal/mol, and the subsequent reaction behavior of CyOOH controls whether the production of cyclohexanol or cyclohexanone is favored. Using CH3COOH or (CH3COO)2Co as a catalyst reduces the energy barriers required to activate cyclohexane and O2 by 4.1 or 7.9 kcal/mol, respectively. Employing CH3COOH improves the CyOOH intramolecular dehydration process, which favors the formation of cyclohexanone. The energy barrier to the decomposition of CyOOH to CyO·, an important precursor of cyclohexanol, decreases from 35.5 kcal/mol for autoxidation to 25.9 kcal/mol for (CH3COO)2Co catalysis. (CH3COO)2Co promotes the autoxidation process via a radical chain mechanism. The computational results agree with experimental observations quite well, revealing the underlying role of CH3COOH and Co ion in cyclohexane oxidation. Graphical abstract Through DFT analysis of cyclohexane autoxidation and catalytic oxidation, we reveal the mechanism of the effects of CH3COOH and Co2+ on the reaction routes.
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8
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Liquid-phase oxidation of cyclohexane. Elementary steps in the developed process, reactivity, catalysis, and problems of conversion and selectivity. Russ Chem Bull 2018. [DOI: 10.1007/s11172-018-2288-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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9
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10
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Liu X, Conte M, He Q, Knight DW, Murphy DM, Taylor SH, Whiston K, Kiely CJ, Hutchings GJ. Catalytic Partial Oxidation of Cyclohexane by Bimetallic Ag/Pd Nanoparticles on Magnesium Oxide. Chemistry 2017; 23:11834-11842. [DOI: 10.1002/chem.201605941] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 03/07/2017] [Indexed: 01/21/2023]
Affiliation(s)
- Xi Liu
- Cardiff Catalysis Institute, School of Chemistry; Cardiff University; Cardiff CF10 3AT UK
- Syncat@Beijing, Synfuels China Technology Co., Ltd; Beijing 101407 P.R. China
| | - Marco Conte
- Cardiff Catalysis Institute, School of Chemistry; Cardiff University; Cardiff CF10 3AT UK
- Department of Chemistry; Dainton Building; University of Sheffield; Sheffield S3 7HF UK
| | - Qian He
- Cardiff Catalysis Institute, School of Chemistry; Cardiff University; Cardiff CF10 3AT UK
- Department of Materials Science and Engineering; Lehigh University; 5 East Packer Avenue Bethlehem PA 18015-3195 USA
| | - David W. Knight
- Cardiff Catalysis Institute, School of Chemistry; Cardiff University; Cardiff CF10 3AT UK
| | - Damien M. Murphy
- Cardiff Catalysis Institute, School of Chemistry; Cardiff University; Cardiff CF10 3AT UK
| | - Stuart H. Taylor
- Cardiff Catalysis Institute, School of Chemistry; Cardiff University; Cardiff CF10 3AT UK
| | - Keith Whiston
- INVISTA Textiles (UK) Limited; P.O. Box 2002 Wilton, Redcar TS10 4XX UK
| | - Christopher J. Kiely
- Department of Materials Science and Engineering; Lehigh University; 5 East Packer Avenue Bethlehem PA 18015-3195 USA
| | - Graham J. Hutchings
- Cardiff Catalysis Institute, School of Chemistry; Cardiff University; Cardiff CF10 3AT UK
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11
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12
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Yang X, Cao Y, Yu H, Huang H, Wang H, Peng F. Unravelling the radical transition during the carbon-catalyzed oxidation of cyclohexane by in situ electron paramagnetic resonance in the liquid phase. Catal Sci Technol 2017. [DOI: 10.1039/c7cy00958e] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The selective oxidation of hydrocarbons is of great importance in the chemical industry.
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Affiliation(s)
- Xixian Yang
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
- Key Laboratory of Renewable Energy
| | - Yonghai Cao
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
| | - Hao Yu
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
| | - Hongyu Huang
- Key Laboratory of Renewable Energy
- Guangzhou Institute of Energy Conversion
- Chinese Academy of Sciences
- China
| | - Hongjuan Wang
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
| | - Feng Peng
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
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13
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Song X, Hao J, Bai Y, Han L, Yan G, Lian X, Liu J. Solvent-free oxidation of cyclohexane by oxygen over Al–Cu–Co alloys: influence of the phase structure and electrical conductivity on catalytic activity. NEW J CHEM 2017. [DOI: 10.1039/c7nj00238f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cu dissolved in the Al13Co4 phase promotes the electrical conductivity and catalytic activity of Al–Cu–Co alloys.
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Affiliation(s)
- Xiaofei Song
- College of Chemical Engineering
- Inner Mongolia University of Technology
- Hohhot 010051
- P. R. China
| | - Jianmin Hao
- College of Chemical Engineering
- Inner Mongolia University of Technology
- Hohhot 010051
- P. R. China
| | - Yijia Bai
- College of Chemical Engineering
- Inner Mongolia University of Technology
- Hohhot 010051
- P. R. China
| | - Limin Han
- College of Chemical Engineering
- Inner Mongolia University of Technology
- Hohhot 010051
- P. R. China
| | - Guangfei Yan
- College of Chemical Engineering
- Inner Mongolia University of Technology
- Hohhot 010051
- P. R. China
| | - Xu Lian
- College of Chemical Engineering
- Inner Mongolia University of Technology
- Hohhot 010051
- P. R. China
| | - Jiansheng Liu
- College of Chemical Engineering
- Inner Mongolia University of Technology
- Hohhot 010051
- P. R. China
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14
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Wang T, She Y, Fu H, Li H. Selective cyclohexane oxidation catalyzed by manganese porphyrins and co-catalysts. Catal Today 2016. [DOI: 10.1016/j.cattod.2015.07.034] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Xiao Z, Zhan W, Guo Y, Guo Y, Gong X, Lu G. The synthesis of Co-doped SAPO-5 molecular sieve and its performance in the oxidation of cyclohexane with molecular oxygen. CHINESE JOURNAL OF CATALYSIS 2016. [DOI: 10.1016/s1872-2067(15)61014-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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16
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Jørgensen S, Knap HC, Otkjær RV, Jensen AM, Kjeldsen MLH, Wennberg PO, Kjaergaard HG. Rapid Hydrogen Shift Scrambling in Hydroperoxy-Substituted Organic Peroxy Radicals. J Phys Chem A 2016; 120:266-75. [DOI: 10.1021/acs.jpca.5b06768] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Solvejg Jørgensen
- Department
of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen Ø, Denmark
| | - Hasse C. Knap
- Department
of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen Ø, Denmark
| | - Rasmus V. Otkjær
- Department
of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen Ø, Denmark
| | - Annesofie M. Jensen
- Department
of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen Ø, Denmark
| | - Mette L. H. Kjeldsen
- Department
of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen Ø, Denmark
| | - Paul O. Wennberg
- Division
of Geological and Planetary Sciences and Division of Engineering and
Applied Science, California Institute of Technology, 1200 E. California
Blvd., Pasadena, California 91125, United States
| | - Henrik G. Kjaergaard
- Department
of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen Ø, Denmark
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17
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Li H, She Y, Fu H, Cao M, Wang J, Wang T. Synergistic effect of co-reactant promotes one-step oxidation of cyclohexane into adipic acid catalyzed by manganese porphyrins. CAN J CHEM 2015. [DOI: 10.1139/cjc-2014-0515] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The synergistic effect of cyclohexane and cyclohexanone promoted synthesis of adipic acid catalyzed by [MnIIIT(p-Cl)PP]Cl with cyclohexane and cyclohexanone as co-reactants. The results showed that the conversions of cyclohexane and cyclohexanone were significantly enhanced because of the cyclohexanone synergistic effect, and the higher selectivity to adipic acid was obtained with dioxygen as an oxidant. The studies indicated that the co-oxidation of cyclohexane and cyclohexanone was influenced by the initial molar ratio of cyclohexanone and cyclohexane, catalyst structure, catalyst concentrations, and reaction conditions. The preliminary mechanism of the co-oxidation reaction of cyclohexane and cyclohexanone using [MnIIIT(p-Cl)PP]Cl as the catalyst was proposed.
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Affiliation(s)
- Hui Li
- Institute of Green Chemistry & Fine Chemical, College of Environmental & Energy Engineering, Beijing University of Technology, Beijing 100124, PR China
| | - Yuanbin She
- Institute of Green Chemistry & Fine Chemical, College of Environmental & Energy Engineering, Beijing University of Technology, Beijing 100124, PR China
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, PR China
| | - Haiyan Fu
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, Hubei 430074, PR China
| | - Meijuan Cao
- Institute of Green Chemistry & Fine Chemical, College of Environmental & Energy Engineering, Beijing University of Technology, Beijing 100124, PR China
| | - Jing Wang
- Huizhou Research Institute of Sun Yat-sen University, Huizhou, Guangdong 516081, PR China
| | - Tao Wang
- Institute of Green Chemistry & Fine Chemical, College of Environmental & Energy Engineering, Beijing University of Technology, Beijing 100124, PR China
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18
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Feng Z, Xie Y, Hao F, Liu P, Luo H. Catalytic oxidation of cyclohexane by substituted metalloporphyrins: experimental and molecular simulation. RSC Adv 2015. [DOI: 10.1039/c5ra14480a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The metalloporphyrins and metalloporphyrin intermediates with lower energy gap have stronger ability to activate the oxygen and cyclohexane respectively.
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Affiliation(s)
- Ze Feng
- College of Chemical Engineering
- Xiangtan University
- Xiangtan 411105
- China
| | - Yujia Xie
- College of Chemical Engineering
- Xiangtan University
- Xiangtan 411105
- China
| | - Fang Hao
- College of Chemical Engineering
- Xiangtan University
- Xiangtan 411105
- China
| | - Pingle Liu
- College of Chemical Engineering
- Xiangtan University
- Xiangtan 411105
- China
| | - He'an Luo
- College of Chemical Engineering
- Xiangtan University
- Xiangtan 411105
- China
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19
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Liu X, Ryabenkova Y, Conte M. Catalytic oxygen activation versus autoxidation for industrial applications: a physicochemical approach. Phys Chem Chem Phys 2014; 17:715-31. [PMID: 25259662 DOI: 10.1039/c4cp03568b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The activation and use of oxygen for the oxidation and functionalization of organic substrates are among the most important reactions in a chemist's toolbox. Nevertheless, despite the vast literature on catalytic oxidation, the phenomenon of autoxidation, an ever-present background reaction that occurs in virtually every oxidation process, is often neglected. In contrast, autoxidation can affect the selectivity to a desired product, to those dictated by pure free-radical chain pathways, thus affecting the activity of any catalyst used to carry out a reaction. This critical review compares catalytic oxidation routes by transition metals versus autoxidation, particularly focusing on the industrial context, where highly selective and "green" processes are needed. Furthermore, the application of useful tests to discriminate between different oxygen activation routes, especially in the area of hydrocarbon oxidation, with the aim of an enhanced catalyst design, is described and discussed. In fact, one of the major targets of selective oxidation is the use of molecular oxygen as the ultimate oxidant, combined with the development of catalysts capable of performing the catalytic cycle in a real energy and cost effective manner on a large scale. To achieve this goal, insights from metallo-proteins that could find application in some areas of industrial catalysis are presented, as well as considering the physicochemical principles that are fundamental to oxidation and autoxidation processes.
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Affiliation(s)
- Xi Liu
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK
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20
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Martynenko EA, Glazko IL, Levanova SV, Portnova YV. Intensification of cyclohexanone purification stage from impurities in caprolactam production using phase transfer catalysis. RUSS J APPL CHEM+ 2014. [DOI: 10.1134/s107042721407009x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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22
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Mitroka SM, Smiley TD, Tanko J, Dietrich AM. Reaction mechanism for oxidation and degradation of high density polyethylene in chlorinated water. Polym Degrad Stab 2013. [DOI: 10.1016/j.polymdegradstab.2013.03.020] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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23
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Highly Efficient Nano-Catalysts Using Activated Carbon as a Support for One-Step Oxidation of Cyclohexane to Adipic Acid. ACTA ACUST UNITED AC 2013. [DOI: 10.4028/www.scientific.net/kem.562-565.754] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new route to substitute for the traditional two-step method for adipic acid production has been investigated. Supported nano metal catalysts Au/C and Co/C were prepared and used for liquid phase oxidation of cyclohexane to adipic acid with oxygen as an oxidant. These catalysts were characterized by XRD, TEM and ICP-AES. The reactions were carried out in an autoclave with solvent and radical initiator at 373~423K and 1.5 MPa. Au/C (1.25%) was found to be a highly efficient catalyst for the oxidation of cyclohexane with a high conversion (44.93%) of cyclohexane and more than 54.85% selectivity to adipic acid. It is indicated that there was a potential application prospect for the nano-catalysts in one-step oxidation of cyclohexane to adipic acid.
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24
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Neuenschwander U, Negron A, Jensen KF. A Clock Reaction Based on Molybdenum Blue. J Phys Chem A 2013; 117:4343-51. [DOI: 10.1021/jp400879d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Ulrich Neuenschwander
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge
Massachusetts 02139, United States
| | - Arnaldo Negron
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge
Massachusetts 02139, United States
| | - Klavs F. Jensen
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge
Massachusetts 02139, United States
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25
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Turrà N, Neuenschwander U, Hermans I. Molecule-Induced Peroxide Homolysis. Chemphyschem 2013; 14:1666-9. [DOI: 10.1002/cphc.201300130] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Indexed: 11/11/2022]
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26
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Jalan A, West RH, Green WH. An Extensible Framework for Capturing Solvent Effects in Computer Generated Kinetic Models. J Phys Chem B 2013; 117:2955-70. [DOI: 10.1021/jp310824h] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Amrit Jalan
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge,
Massachusetts 02139, United States
| | - Richard H. West
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge,
Massachusetts 02139, United States
| | - William H. Green
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge,
Massachusetts 02139, United States
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27
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Marteau C, Ruyffelaere F, Aubry JM, Penverne C, Favier D, Nardello-Rataj V. Oxidative degradation of fragrant aldehydes. Autoxidation by molecular oxygen. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.01.034] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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28
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Kaza A, Jensen P, Clegg J, Masters AF, Maschmeyer T, Yuen AK. The chemistry of cobalt acetate. X. The preparations of the mixed ligand cobalt oligomers, [Co3O(C6H5N2O)3(CH3CO2)3][PF6].CH3CN (I), [Co4(μ2-OH)2(η1:η1:μ2-CH3COO)2(CH3CO2)2 (η1:η1:μ2-C11H8NO)2(η1:η1:η1:η1:μ2-C11H8N3O)2][PF6]2.CH3OH.3H2O (II) and [Co3O(CH3CO2)5(C7H6NO2)(py)3][PF6] (III) and the crystal structures of (I) and (II). Comparisons with homoleptic cobalt acetate dimers and trimers. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.07.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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29
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Conte M, Liu X, Murphy DM, Whiston K, Hutchings GJ. Cyclohexane oxidation using Au/MgO: an investigation of the reaction mechanism. Phys Chem Chem Phys 2012; 14:16279-85. [PMID: 23132082 DOI: 10.1039/c2cp43363j] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The liquid phase oxidation of cyclohexane was undertaken using Au/MgO and the reaction mechanism was investigated by means of continuous wave (CW) EPR spectroscopy employing the spin trapping technique. Activity tests aimed to determine the conversion and selectivity of Au/MgO catalyst showed that Au was capable of selectivity control to cyclohexanol formation up to 70%, but this was accompanied by a limited enhancement in conversion when compared with the reaction in the absence of catalyst. In contrast, when radical initiators were used, in combination with Au/MgO, an activity comparable to that observed in industrial processes at ca. 5% conversion was found, with retained high selectivity. By studying the free radical autoxidation of cyclohexane and the cyclohexyl hydroperoxide decomposition in the presence of spin traps, we show that Au nanoparticles are capable of an enhanced generation of cyclohexyl alkoxy radicals, and the role of Au is identified as a promoter of the catalytic autoxidation processes, therefore demonstrating that the reaction proceeds via a radical chain mechanism.
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Affiliation(s)
- Marco Conte
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK.
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Spier E, Neuenschwander U, Hermans I. Einblicke in den Cobalt(II)-katalysierten Abbau von Peroxiden. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201207920] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Spier E, Neuenschwander U, Hermans I. Insights into the cobalt(II)-catalyzed decomposition of peroxide. Angew Chem Int Ed Engl 2012; 52:1581-5. [PMID: 23255522 DOI: 10.1002/anie.201207920] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Revised: 11/16/2012] [Indexed: 11/07/2022]
Affiliation(s)
- Eyal Spier
- Department of Chemistry and Applied Bio-Sciences, ETH Zurich, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland
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Neuenschwander U, Neuenschwander J, Hermans I. Cavitation-induced radical-chain oxidation of valeric aldehyde. ULTRASONICS SONOCHEMISTRY 2012; 19:1011-1014. [PMID: 22386946 DOI: 10.1016/j.ultsonch.2012.02.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Revised: 02/02/2012] [Accepted: 02/06/2012] [Indexed: 05/31/2023]
Abstract
The application of high-amplitude ultrasound to liquids triggers cavitation. By the collapse of the thereby appearing vacuum cavities, high temperatures can be reached in a transient manner. The high temperatures in these hot-spots can lead to homolytic scission of chemical bonds. The thereby generated radicals are usually utilized in aqueous systems for the degeneration of organic pollutants. In this contribution, we demonstrate that the radicals can also be used for synthetic purposes: under an oxygen atmosphere, they trigger the oxidation of an aldehyde substrate.
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Affiliation(s)
- Ulrich Neuenschwander
- Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
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Hereijgers BPC, Parton RF, Weckhuysen BM. Mechanistic insights in the olefin epoxidation with cyclohexyl hydroperoxide. Catal Sci Technol 2012. [DOI: 10.1039/c2cy00455k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Hereijgers BPC, Parton RF, Weckhuysen BM. Cyclohexene Epoxidation with Cyclohexyl Hydroperoxide: A Catalytic Route to Largely Increase Oxygenate Yield from Cyclohexane Oxidation. ACS Catal 2011. [DOI: 10.1021/cs200354c] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bart P. C. Hereijgers
- Inorganic Chemistry and Catalysis group, Debye Institute for NanoMaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Rudy F. Parton
- DSM Research Industrial Chemicals, P.O. Box 18, 6160 MD Geleen, The Netherlands
| | - Bert M. Weckhuysen
- Inorganic Chemistry and Catalysis group, Debye Institute for NanoMaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
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Cho K, Kerber WD, Lee SR, Wan A, Batteas JD, Goldberg DP. Preparation, size control, surface deposition, and catalytic reactivity of hydrophobic corrolazine nanoparticles in an aqueous environment. Inorg Chem 2011; 49:8465-73. [PMID: 20735145 DOI: 10.1021/ic101035q] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Nanoparticles, each consisting of one of the three molecular corrolazine (Cz) compounds, H(3)(TBP(8)Cz), Mn(III)(TBP(8)Cz), and Fe(III)(TBP(8)Cz) (TBP(8)Cz = octakis(4-tert-butylphenyl)corrolazinato), were prepared via a facile mixed-solvent technique. The corrolazine nanoparticles (MCz-NPs) were formed in H(2)O/THF (10:1) in the presence of a small amount of a polyethylene glycol derivative (TEG-ME) added as a stabilizer. This technique allows highly hydrophobic Czs to be "dissolved" in an aqueous environment as nanoparticles, which remain in solution for several months without visible precipitation. The MCz-NPs were characterized by UV-visible spectroscopy, dynamic light scattering (DLS), and transmission electron microscopy (TEM) imaging, and shown to be spherical particles from 100-600 nm in diameter with low polydispersity indices (PDI = 0.003-0.261). Particle size is strongly dependent on Cz concentration. The H(3)Cz-NPs were adsorbed on to a modified self-assembled monolayer (SAM) surface and imaged by atomic force microscopy (AFM). Adsorption resulted in disassembly of the larger H(3)Cz-NPs to smaller H(3)Cz-NPs, whereby the resulting particle size can be controlled by the surface energy of the monolayer. The Fe(III)Cz-NPs were shown to be competent catalysts for the oxidation of cyclohexene with either PFIB or H(2)O(2) as external oxidant. The reactivity and product selectivity seen for Fe(III)Cz-NPs differs dramatically from that seen for the molecular species in organic solvents, suggesting that both the nanoparticle structure and the aqueous conditions may contribute to significant changes in the mechanism of action of the Fe(III)Cz catalyst.
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Affiliation(s)
- Kevin Cho
- Department of Chemistry, Johns Hopkins University, 3400 N. Charles Street, Baltimore, Maryland 21218, USA
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Fischer J, Lange T, Boehling R, Rehfinger A, Klemm E. Uncatalyzed selective oxidation of liquid cyclohexane with air in a microcapillary reactor. Chem Eng Sci 2010. [DOI: 10.1016/j.ces.2010.05.028] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Surface Cobalt Silicate and CoOx Cluster Anchored to SBA-15: Highly Efficient for Cyclohexane Partial Oxidation. Catal Letters 2010. [DOI: 10.1007/s10562-010-0318-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Conte M, Chechik V. Spin trapping of radical intermediates in gas phase catalysis: cyclohexane oxidation over metal oxides. Chem Commun (Camb) 2010; 46:3991-3. [DOI: 10.1039/c0cc00157k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Neuenschwander U, Guignard F, Hermans I. Mechanism of the aerobic oxidation of alpha-pinene. CHEMSUSCHEM 2010; 3:75-84. [PMID: 20017184 DOI: 10.1002/cssc.200900228] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
A combined experimental and theoretical approach is used to study the thermal autoxidation of alpha-pinene. Four different types of peroxyl radicals are generated; the verbenyl peroxyl radical being the most abundant one. The peroxyl radicals propagate a long radical chain, implying that chain termination does not play an important role in the production of the products. Two distinct types of propagation steps are active in parallel: the abstraction of allylic H atoms and the addition to the unsaturated C=C bond. The efficiency for both pathways appears to depend on the structure of the peroxyl radical. The latter step yields the corresponding epoxide product, as well as alkoxyl radicals. Under the investigated reaction conditions the alkoxyl radicals seem to produce both the alcohol and ketone products, the ketone presumably being formed upon the abstraction of the weakly bonded alphaH atom by O2. This mechanism explains the predominantly primary nature of all quantified products. At higher conversion, co-oxidation of the hydroperoxide products constitutes an additional, albeit small, source of alcohol and ketone products.
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Affiliation(s)
- Ulrich Neuenschwander
- Department of Chemistry and Applied Biosciences, ETH Zurich, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland
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Monteiro B, Gago S, Balula SS, Valente AA, Gonçalves IS, Pillinger M. Liquid-phase oxidation catalysed by copper(II) immobilised in a pillared layered double hydroxide. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.molcata.2009.06.027] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Anand R, Hamdy MS, Parton R, Maschmeyer T, Jansen JC, Gläser R, Kapteijn F, Hanefeld U. Metal-TUD-1 Catalyzed Aerobic Oxidation of Cyclohexane: A Comparative Study. Aust J Chem 2009. [DOI: 10.1071/ch08471] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The relative performance of various metal-incorporated mesoporous silicas of the TUD-1 structure type (M-TUD-1, where M = Ti, Cr, Co, Fe, Cu, Mn) in the selective aerobic oxidation of cyclohexane with tert-butylhydroperoxide and cyclohexylhydroperoxide (CHHP) to the respective hydroperoxides and subsequent decomposition to the alcohol and ketone is reported. In particular, relationships regarding metal type and loading, silica structure type and peroxide initiator are elucidated, to show that it is possible to tune catalysts for either CHHP formation or CHHP decomposition.
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Hao J, Liu B, Cheng H, Wang Q, Wang J, Cai S, Zhao F. Cyclohexane oxidation on a novel Ti70Zr10Co20 catalyst containing quasicrystal. Chem Commun (Camb) 2009:3460-2. [DOI: 10.1039/b905324g] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Retcher B, Costa JS, Tang J, Hage R, Gamez P, Reedijk J. Unexpected high oxidation of cyclohexane by Fe salts and dihydrogen peroxide in acetonitrile. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.molcata.2008.02.007] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Hermans I, Peeters J, Jacobs PA. Autoxidation Chemistry: Bridging the Gap Between Homogeneous Radical Chemistry and (Heterogeneous) Catalysis. Top Catal 2008. [DOI: 10.1007/s11244-008-9051-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Hermans I, Peeters J, Jacobs PA. Origin of Byproducts during the Catalytic Autoxidation of Cyclohexane. J Phys Chem A 2008; 112:1747-53. [DOI: 10.1021/jp709570m] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ive Hermans
- Centre for Surface Chemistry and Catalysis, Department of Microbial and Molecular Systems (M2S), K. U. Leuven, Kasteelpark Arenberg 23, B-3001 Leuven, Belgium, and Department of Chemistry, K. U. Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Jozef Peeters
- Centre for Surface Chemistry and Catalysis, Department of Microbial and Molecular Systems (M2S), K. U. Leuven, Kasteelpark Arenberg 23, B-3001 Leuven, Belgium, and Department of Chemistry, K. U. Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Pierre A. Jacobs
- Centre for Surface Chemistry and Catalysis, Department of Microbial and Molecular Systems (M2S), K. U. Leuven, Kasteelpark Arenberg 23, B-3001 Leuven, Belgium, and Department of Chemistry, K. U. Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
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Hermans I, Peeters J, Vereecken L, Jacobs PA. Mechanism of Thermal Toluene Autoxidation. Chemphyschem 2007; 8:2678-88. [DOI: 10.1002/cphc.200700563] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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50
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Hermans I, Peeters J, Jacobs PA. Autoxidation of Ethylbenzene: The Mechanism Elucidated. J Org Chem 2007; 72:3057-64. [PMID: 17362045 DOI: 10.1021/jo070040m] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Using a combined experimental and theoretical approach, we elucidated the mechanism of ethylbenzene autoxidation, at about 420 K. The generally accepted literature mechanism indeed fails to explain basic experimental observations, such as the high ketone to alcohol ratio. The hitherto overlooked propagation of 1-phenyl-ethylhydroperoxide, the primary chain product, is now unambiguously identified as the source of acetophenone as well as of 1-phenylethanol via a subsequent activated cage reaction. A similar mechanism allowed rationalizing of the cyclohexanone and cyclohexanol formation in the autoxidation of cyclohexane. The primary hydroperoxide product is found to react about 10 times faster than the arylalkane substrate with the chain carrying peroxyl radicals, whereas in cyclohexane autoxidation, this reactivity ratio is as high as 55. In combination with a lower efficiency of the above-mentioned cage reaction, this results in a rather high 1-phenyl-ethylhydroperoxide yield and causes a high ketone/alcohol ratio. Radicals are shown to be predominantly generated via a concerted bimolecular reaction of the hydroperoxide with the arylalkane substrate, producing alkyl and hydrated alkoxy free radicals. In this autoxidation system, no reaction product exhibits a major initiation-enhancing autocatalytic effect, as is the case with cyclohexanone in cyclohexane autoxidation. As a result, the conversion rate increases less sharply in time compared to cyclohexane autoxidation. In fact, even some slight inhibition can be observed, due to the formation of chain-terminating HO2* radicals in the alcohol co-oxidation. At 418 K, the chain length is estimated to be about 300-500 for conversions up to 10%.
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Affiliation(s)
- Ive Hermans
- Centre for Surface Chemistry and Catalysis, Department of Microbial and Molecular Systems (M2S), K.U.Leuven Kasteelpark Arenberg 23, B-3001 Heverlee, Belgium.
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