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Microwave-Assisted CO Oxidation over Perovskites as a Model Reaction for Exhaust Aftertreatment—A Critical Assessment of Opportunities and Challenges. Catalysts 2022. [DOI: 10.3390/catal12070802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
We introduce a microwave (MW)-assisted heterogeneous catalytical setup, which we carefully examined for its thermal and performance characteristics. Although MW-assisted heterogeneous catalysis has been widely explored in the past, there is still need for attention towards the specific experimental details, which may complicate the interpretation of results and comparability in general. In this study we discuss technical and material related factors influencing the obtained data from MW-assisted heterogeneous catalysis, specifically in regards to the oxidation of carbon monoxide over a selected perovskite catalyst, which shall serve as a model reaction for exhaust gas aftertreatment. A high degree of comparability between different experiments, both in terms of setup and the catalysts, is necessary to draw conclusions regarding this promising technology. Despite significant interest from both fundamental and applied research, many questions and controversies still remain and are discussed in this study. A series of deciding parameters is presented and the influence on the data is discussed. To control these parameters is both a challenge but also an opportunity to gain advanced insight into MW-assisted catalysis and to develop new materials and processes. The results and discussion are based upon experiments conducted in a monomode MW-assisted catalysis system employing powdered solid-state perovskite oxides in a fixed bed reactor. The discussion covers critical aspects concerning the determination of the actual catalyst temperature, the homogeneity of the thermal distribution, time, and local temperature relaxation (i.e., thermal runaway effects and hotspot formation), particle size effects, gas flow considerations, and system design.
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Tsubaki S, Matsuzawa T, Suzuki E, Fujii S, Wada Y. Operando Raman Spectroscopy of the Microwave-Enhanced Catalytic Dehydration of 2-Propanol by WO 3. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b03876] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shuntaro Tsubaki
- School of Materials and Chemical Technology, Tokyo Institute of Technology, Ookayama 2-12-1 E4-3, Meguro, Tokyo 152-8550, Japan
| | - Tomoki Matsuzawa
- School of Materials and Chemical Technology, Tokyo Institute of Technology, Ookayama 2-12-1 E4-3, Meguro, Tokyo 152-8550, Japan
| | - Eiichi Suzuki
- School of Materials and Chemical Technology, Tokyo Institute of Technology, Ookayama 2-12-1 E4-3, Meguro, Tokyo 152-8550, Japan
| | - Satoshi Fujii
- School of Materials and Chemical Technology, Tokyo Institute of Technology, Ookayama 2-12-1 E4-3, Meguro, Tokyo 152-8550, Japan
- Department of Information and Communication Systems Engineering, Okinawa National College of Technology, 905 Henoko, Nago-shi 905-2192, Okinawa, Japan
| | - Yuji Wada
- School of Materials and Chemical Technology, Tokyo Institute of Technology, Ookayama 2-12-1 E4-3, Meguro, Tokyo 152-8550, Japan
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Sibianu TI, Dimitrakis G, Katrib J, Matei C, Berger D, Dodds C, Surdu AV, Calinescu I, Irvine DJ. Utilization of Dielectric Properties Assessment To Evaluate the Catalytic Activity and Rate of Deactivation of Heterogeneous Catalysts. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.6b04341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tudor I. Sibianu
- Department
of Bioresources and Polymer Science, University “Politehnica” of Bucharest, Gh. Polizu Street, No. 1-7, 011061 Bucharest, Romania
| | - Georgios Dimitrakis
- Department
of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham, University Park,
Nottingham NG7 2RD, United Kingdom
| | - Juliano Katrib
- Department
of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham, University Park,
Nottingham NG7 2RD, United Kingdom
| | - Cristian Matei
- Department
of Inorganic Chemistry, Physical Chemistry and Electrochemistry, University “Politehnica” of Bucharest, Gh. Polizu Street, No. 1-7, 011061 Bucharest, Romania
| | - Daniela Berger
- Department
of Inorganic Chemistry, Physical Chemistry and Electrochemistry, University “Politehnica” of Bucharest, Gh. Polizu Street, No. 1-7, 011061 Bucharest, Romania
| | - Christopher Dodds
- Department
of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham, University Park,
Nottingham NG7 2RD, United Kingdom
| | - Adrian V. Surdu
- Department
of Science and Engineering of Oxide Materials and Nanomaterials, University “Politehnica” of Bucharest, Gh. Polizu Street, No. 1-7, 011061 Bucharest, Romania
| | - Ioan Calinescu
- Department
of Bioresources and Polymer Science, University “Politehnica” of Bucharest, Gh. Polizu Street, No. 1-7, 011061 Bucharest, Romania
| | - Derek J. Irvine
- Department
of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham, University Park,
Nottingham NG7 2RD, United Kingdom
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Ramírez A, Hueso JL, Mallada R, Santamaría J. Ethylene epoxidation in microwave heated structured reactors. Catal Today 2016. [DOI: 10.1016/j.cattod.2016.01.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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5
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Senarathna KGC, Randiligama HSP, Rajapakse RMG. Preparation, characterization and oxygen reduction catalytic activities of nanocomposites of Co(ii)/montmorillonite containing polypyrrole, polyaniline or poly(ethylenedioxythiophene). RSC Adv 2016. [DOI: 10.1039/c6ra23100d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Cobalt(ii)/conducting polymer/montmorillonite composites are synthesized through ion exchange of montmorillonite (MMT) followed by oxidative polymerization using Co(iii) as the oxidant. Composites are characterized and used as electrocatalysts.
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Affiliation(s)
- K. G. C. Senarathna
- Department of Chemistry
- Post-graduate Institute of Science
- University of Peradeniya
- Peradeniya 20400
- Sri Lanka
| | - H. M. S. P. Randiligama
- Department of Chemistry
- Post-graduate Institute of Science
- University of Peradeniya
- Peradeniya 20400
- Sri Lanka
| | - R. M. G. Rajapakse
- Department of Chemistry
- Post-graduate Institute of Science
- University of Peradeniya
- Peradeniya 20400
- Sri Lanka
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Total oxidation of lean propane over α-Fe2O3 using microwaves as an energy source. REACTION KINETICS MECHANISMS AND CATALYSIS 2014. [DOI: 10.1007/s11144-014-0776-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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7
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Contribution of components in Ce–Ti–Cr–O catalysts for selective propane-combustion in the presence of CO. CATAL COMMUN 2010. [DOI: 10.1016/j.catcom.2010.05.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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8
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Liu Y, Wen C, Guo Y, Liu X, Ren J, Lu G, Wang Y. Mechanism of CO Disproportionation on Reduced Ceria. ChemCatChem 2010. [DOI: 10.1002/cctc.200900246] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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9
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Durka T, Van Gerven T, Stankiewicz A. Microwaves in Heterogeneous Gas-Phase Catalysis: Experimental and Numerical Approaches. Chem Eng Technol 2009. [DOI: 10.1002/ceat.200900207] [Citation(s) in RCA: 91] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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10
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Beckers J, Drost R, van Zandvoort I, Collignon PF, Rothenberg G. Selective Hydrogen Oxidation in the Presence of C3 Hydrocarbons Using Perovskite Oxygen Reservoirs. Chemphyschem 2008; 9:1062-8. [DOI: 10.1002/cphc.200800039] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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11
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Organische Chemie: Mayr ausgezeichnet / Katalyse: Basset und Rothenberg geehrt. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200601931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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12
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Organic Chemistry: Mayr Awarded / Catalysis: Basset and Rothenberg Honored. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/anie.200601931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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