Kinetics of Water Gas Shift Reaction on Au/CeZrO<inf>4</inf>: A Comparison Between Conventional Heating and Dielectric Barrier Discharge (DBD) Plasma Activation

© 2020, Springer Science+Business Media, LLC, part of Springer Nature. Abstract: The kinetics of the low-temperature forward water gas shift (LT-WGS) reaction have been studied over a 2 wt% Au/CeZrO4 (Au/CZO) catalyst using both thermal and dielectric barrier discharge plasma heterogeneous catalyst...

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Main Authors: Kanlayawat Wangkawong, Sukon Phanichphant, Burapat Inceesungvorn, Cristina E. Stere, Sarayute Chansai, Christopher Hardacre, Alexandre Goguet
Format: Journal
Published: 2020
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/68297
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spelling th-cmuir.6653943832-682972020-04-02T15:24:58Z Kinetics of Water Gas Shift Reaction on Au/CeZrO<inf>4</inf>: A Comparison Between Conventional Heating and Dielectric Barrier Discharge (DBD) Plasma Activation Kanlayawat Wangkawong Sukon Phanichphant Burapat Inceesungvorn Cristina E. Stere Sarayute Chansai Christopher Hardacre Alexandre Goguet Chemical Engineering Chemistry © 2020, Springer Science+Business Media, LLC, part of Springer Nature. Abstract: The kinetics of the low-temperature forward water gas shift (LT-WGS) reaction have been studied over a 2 wt% Au/CeZrO4 (Au/CZO) catalyst using both thermal and dielectric barrier discharge plasma heterogeneous catalyst systems. Using the energy density (ε), the apparent activation energy has been calculated under plasma and thermally activated conditions. A substantially lower apparent activation energy is observed in the plasma activated system (9.5 kJ/mol) compared with the thermal-catalysed reaction (132.9 kJ/mol). Different kinetic isotope effect (KIE) values for water were found in thermal (1.43) and plasma (1.89) activated catalytic systems which infer different mechanisms between the two activation processes and also shows the importance of water activation. Furthermore, negative and positive reaction orders with respect to CO and H2O are found for both conditions which are − 1.30, 0.28 under thermal and − 1.53, 0.35 under plasma processes, respectively. The reaction order with respect to H2O and KIE studies demonstrate that the bond cleavage in H2O molecule is a rate determining step in the plasma-assisted LT-WGS, similar to that in the thermal-assisted reaction. Graphic Abstract: [Figure not available: see fulltext.]. 2020-04-02T15:24:29Z 2020-04-02T15:24:29Z 2020-01-01 Journal 15729028 10225528 2-s2.0-85081018590 10.1007/s11244-020-01245-8 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85081018590&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/68297
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Chemical Engineering
Chemistry
spellingShingle Chemical Engineering
Chemistry
Kanlayawat Wangkawong
Sukon Phanichphant
Burapat Inceesungvorn
Cristina E. Stere
Sarayute Chansai
Christopher Hardacre
Alexandre Goguet
Kinetics of Water Gas Shift Reaction on Au/CeZrO<inf>4</inf>: A Comparison Between Conventional Heating and Dielectric Barrier Discharge (DBD) Plasma Activation
description © 2020, Springer Science+Business Media, LLC, part of Springer Nature. Abstract: The kinetics of the low-temperature forward water gas shift (LT-WGS) reaction have been studied over a 2 wt% Au/CeZrO4 (Au/CZO) catalyst using both thermal and dielectric barrier discharge plasma heterogeneous catalyst systems. Using the energy density (ε), the apparent activation energy has been calculated under plasma and thermally activated conditions. A substantially lower apparent activation energy is observed in the plasma activated system (9.5 kJ/mol) compared with the thermal-catalysed reaction (132.9 kJ/mol). Different kinetic isotope effect (KIE) values for water were found in thermal (1.43) and plasma (1.89) activated catalytic systems which infer different mechanisms between the two activation processes and also shows the importance of water activation. Furthermore, negative and positive reaction orders with respect to CO and H2O are found for both conditions which are − 1.30, 0.28 under thermal and − 1.53, 0.35 under plasma processes, respectively. The reaction order with respect to H2O and KIE studies demonstrate that the bond cleavage in H2O molecule is a rate determining step in the plasma-assisted LT-WGS, similar to that in the thermal-assisted reaction. Graphic Abstract: [Figure not available: see fulltext.].
format Journal
author Kanlayawat Wangkawong
Sukon Phanichphant
Burapat Inceesungvorn
Cristina E. Stere
Sarayute Chansai
Christopher Hardacre
Alexandre Goguet
author_facet Kanlayawat Wangkawong
Sukon Phanichphant
Burapat Inceesungvorn
Cristina E. Stere
Sarayute Chansai
Christopher Hardacre
Alexandre Goguet
author_sort Kanlayawat Wangkawong
title Kinetics of Water Gas Shift Reaction on Au/CeZrO<inf>4</inf>: A Comparison Between Conventional Heating and Dielectric Barrier Discharge (DBD) Plasma Activation
title_short Kinetics of Water Gas Shift Reaction on Au/CeZrO<inf>4</inf>: A Comparison Between Conventional Heating and Dielectric Barrier Discharge (DBD) Plasma Activation
title_full Kinetics of Water Gas Shift Reaction on Au/CeZrO<inf>4</inf>: A Comparison Between Conventional Heating and Dielectric Barrier Discharge (DBD) Plasma Activation
title_fullStr Kinetics of Water Gas Shift Reaction on Au/CeZrO<inf>4</inf>: A Comparison Between Conventional Heating and Dielectric Barrier Discharge (DBD) Plasma Activation
title_full_unstemmed Kinetics of Water Gas Shift Reaction on Au/CeZrO<inf>4</inf>: A Comparison Between Conventional Heating and Dielectric Barrier Discharge (DBD) Plasma Activation
title_sort kinetics of water gas shift reaction on au/cezro<inf>4</inf>: a comparison between conventional heating and dielectric barrier discharge (dbd) plasma activation
publishDate 2020
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85081018590&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/68297
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