Production of CO-rich Hydrogen from Methane Dry Reforming Over Lanthania-Supported Cobalt Catalyst: Kinetic and Mechanistic Studies

Production of CO-rich Hydrogen from Methane Dry Reforming Over Lanthania-Supported Cobalt Catalyst: Kinetic and Mechanistic Studies

In this study, the production of CO-rich hydrogen from methane dry reforming over lanthania-supported Co catalyst was investigated. The Co/La2O3 catalyst was synthesized via wet-impregnation method and characterized using instrument techniques such as TGA, FTIR, XRD, FESEM-EDX and N2 adsorption-des...

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Main Authors: Ayodele, Bamidele V., Khan, Maksudur R., Lam, Su Shiung, Cheng, C. K.
Format: Article
Language:English
English
Published: Elsevier 2016
Subjects:
TP Chemical technology
Online Access:http://umpir.ump.edu.my/id/eprint/11901/
http://umpir.ump.edu.my/id/eprint/11901/
http://umpir.ump.edu.my/id/eprint/11901/
http://umpir.ump.edu.my/id/eprint/11901/1/ayodele2016.pdf
http://umpir.ump.edu.my/id/eprint/11901/7/Production%20of%20CO-rich%20Hydrogen%20from%20Methane%20Dry%20Reforming%20Over%20Lanthania-Supported%20Cobalt%20Catalyst-%20Kinetic%20and%20Mechanistic%20Studies.pdf
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spelling ump-119012019-08-28T03:27:11Z http://umpir.ump.edu.my/id/eprint/11901/ Production of CO-rich Hydrogen from Methane Dry Reforming Over Lanthania-Supported Cobalt Catalyst: Kinetic and Mechanistic Studies Ayodele, Bamidele V. Khan, Maksudur R. Lam, Su Shiung Cheng, C. K. TP Chemical technology In this study, the production of CO-rich hydrogen from methane dry reforming over lanthania-supported Co catalyst was investigated. The Co/La2O3 catalyst was synthesized via wet-impregnation method and characterized using instrument techniques such as TGA, FTIR, XRD, FESEM-EDX and N2 adsorption-desorption analysis. The catalytic activity of the Co/La2O3 catalyst tested in a fixed bed stainless steel reactor yielded highest CH4 and CO2 conversion of 50% and 60% respectively at 1023 K and feed ratio of 1.0. The methane dry reforming reaction gave highest H2 and CO yield of 45% and 58% respectively. Furthermore, kinetics and mechanistic behavior of the La2O3 supported Co catalyst in methane dry reforming reaction was investigated as a function of temperature and partial pressure of reactants (CH4 and CO2). The experimental data obtained from the kinetics measurements were fitted using the empirical power-law rate expression, as well as six different Langmuir-Hinshelwood kinetics models. The six models were then statistically and thermodynamically discriminated. Consequently, the Langmuir-Hinshelwood kinetics model (dual-site associative adsorption of both CH4 and CO2 with bimolecular surface reaction) was adjudged the best representative model. Activation energy values of 96.44 and 98.11 kJ mol�1 were obtained for the CH4 consumptions from the power-law and Langmuir-Hinshelwood models, respectively. A lower activation energy of circa 72 kJ mol�1 obtained for CO2 consumption showed that the rate of consumption of CO2 consumption was speedier than CH4. Elsevier 2016-02-10 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/11901/1/ayodele2016.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/11901/7/Production%20of%20CO-rich%20Hydrogen%20from%20Methane%20Dry%20Reforming%20Over%20Lanthania-Supported%20Cobalt%20Catalyst-%20Kinetic%20and%20Mechanistic%20Studies.pdf Ayodele, Bamidele V. and Khan, Maksudur R. and Lam, Su Shiung and Cheng, C. K. (2016) Production of CO-rich Hydrogen from Methane Dry Reforming Over Lanthania-Supported Cobalt Catalyst: Kinetic and Mechanistic Studies. International Journal of Hydrogen Energy, 41 (8). pp. 4603-4615. ISSN 0360-3199 http://dx.doi.org/10.1016/j.ijhydene.2016.01.091 DOI: 10.1016/j.ijhydene.2016.01.091
repository_type Digital Repository
institution_category Local University
institution Universiti Malaysia Pahang
building UMP Institutional Repository
collection Online Access
language English
English
topic TP Chemical technology
spellingShingle TP Chemical technology
Ayodele, Bamidele V.
Khan, Maksudur R.
Lam, Su Shiung
Cheng, C. K.
Production of CO-rich Hydrogen from Methane Dry Reforming Over Lanthania-Supported Cobalt Catalyst: Kinetic and Mechanistic Studies
description In this study, the production of CO-rich hydrogen from methane dry reforming over lanthania-supported Co catalyst was investigated. The Co/La2O3 catalyst was synthesized via wet-impregnation method and characterized using instrument techniques such as TGA, FTIR, XRD, FESEM-EDX and N2 adsorption-desorption analysis. The catalytic activity of the Co/La2O3 catalyst tested in a fixed bed stainless steel reactor yielded highest CH4 and CO2 conversion of 50% and 60% respectively at 1023 K and feed ratio of 1.0. The methane dry reforming reaction gave highest H2 and CO yield of 45% and 58% respectively. Furthermore, kinetics and mechanistic behavior of the La2O3 supported Co catalyst in methane dry reforming reaction was investigated as a function of temperature and partial pressure of reactants (CH4 and CO2). The experimental data obtained from the kinetics measurements were fitted using the empirical power-law rate expression, as well as six different Langmuir-Hinshelwood kinetics models. The six models were then statistically and thermodynamically discriminated. Consequently, the Langmuir-Hinshelwood kinetics model (dual-site associative adsorption of both CH4 and CO2 with bimolecular surface reaction) was adjudged the best representative model. Activation energy values of 96.44 and 98.11 kJ mol�1 were obtained for the CH4 consumptions from the power-law and Langmuir-Hinshelwood models, respectively. A lower activation energy of circa 72 kJ mol�1 obtained for CO2 consumption showed that the rate of consumption of CO2 consumption was speedier than CH4.
format Article
author Ayodele, Bamidele V.
Khan, Maksudur R.
Lam, Su Shiung
Cheng, C. K.
author_facet Ayodele, Bamidele V.
Khan, Maksudur R.
Lam, Su Shiung
Cheng, C. K.
author_sort Ayodele, Bamidele V.
title Production of CO-rich Hydrogen from Methane Dry Reforming Over Lanthania-Supported Cobalt Catalyst: Kinetic and Mechanistic Studies
title_short Production of CO-rich Hydrogen from Methane Dry Reforming Over Lanthania-Supported Cobalt Catalyst: Kinetic and Mechanistic Studies
title_full Production of CO-rich Hydrogen from Methane Dry Reforming Over Lanthania-Supported Cobalt Catalyst: Kinetic and Mechanistic Studies
title_fullStr Production of CO-rich Hydrogen from Methane Dry Reforming Over Lanthania-Supported Cobalt Catalyst: Kinetic and Mechanistic Studies
title_full_unstemmed Production of CO-rich Hydrogen from Methane Dry Reforming Over Lanthania-Supported Cobalt Catalyst: Kinetic and Mechanistic Studies
title_sort production of co-rich hydrogen from methane dry reforming over lanthania-supported cobalt catalyst: kinetic and mechanistic studies
publisher Elsevier
publishDate 2016
url http://umpir.ump.edu.my/id/eprint/11901/
http://umpir.ump.edu.my/id/eprint/11901/
http://umpir.ump.edu.my/id/eprint/11901/
http://umpir.ump.edu.my/id/eprint/11901/1/ayodele2016.pdf
http://umpir.ump.edu.my/id/eprint/11901/7/Production%20of%20CO-rich%20Hydrogen%20from%20Methane%20Dry%20Reforming%20Over%20Lanthania-Supported%20Cobalt%20Catalyst-%20Kinetic%20and%20Mechanistic%20Studies.pdf
first_indexed 2023-09-18T22:12:57Z
last_indexed 2023-09-18T22:12:57Z
_version_ 1777415149279248384

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