Staff View: Bi-reforming of methane on Ni/SBA-15 catalyst for syngas production: Influence of feed composition

Bi-reforming of methane on Ni/SBA-15 catalyst for syngas production: Influence of feed composition

Bi-reforming of methane (BRM) was evaluated for Ni catalyst dispersed on SBA-15 support prepared by hydrothermal technique. BRM reactions were conducted under atmospheric condition with varying reactant partial pressure in the range of 10–45 kPa and 1073 K in fixed-bed reactor. The ordered hexagonal...

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Main Authors:	Singh, Sharanjit, Mahadi, Bahari, Bawadi, Abdullah, Phuong, Pham T. T., Truong, Quang Duc, Vo, Dai-Viet N., Adesina, Adesoji A.
Format:	Article
Language:	English
Published:	Elsevier 2018
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/22090/1/Bi-reforming%20of%20methane%20on%20Ni.SBA-15%20catalyst%20for%20syngas%20production.pdf http://umpir.ump.edu.my/id/eprint/22090/ https://doi.org/10.1016/j.ijhydene.2018.07.136
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spelling	my.ump.umpir.220902019-10-03T07:37:51Z http://umpir.ump.edu.my/id/eprint/22090/ Bi-reforming of methane on Ni/SBA-15 catalyst for syngas production: Influence of feed composition Singh, Sharanjit Mahadi, Bahari Bawadi, Abdullah Phuong, Pham T. T. Truong, Quang Duc Vo, Dai-Viet N. Adesina, Adesoji A. TP Chemical technology Bi-reforming of methane (BRM) was evaluated for Ni catalyst dispersed on SBA-15 support prepared by hydrothermal technique. BRM reactions were conducted under atmospheric condition with varying reactant partial pressure in the range of 10–45 kPa and 1073 K in fixed-bed reactor. The ordered hexagonal mesoporous SBA-15 support possessing large specific surface area of 669.5 m2 g−1 was well preserved with NiO addition during incipient wetness impregnation. Additionally, NiO species with mean crystallite dimension of 14.5 nm were randomly distributed over SBA-15 support surface and inside its mesoporous channels. Thus, these particles were reduced at various temperatures depending on different degrees of metal-support interaction. At stoichiometric condition and 1073 K, CH4 and CO2 conversions were about 61.6% and 58.9%, respectively whilst H2/CO ratio of 2.14 slightly superior to theoretical value for BRM would suggest the predominance of methane steam reforming. H2 and CO yields were significantly enhanced with increasing CO2/(CH4 + H2O) ratio due to growing CO2 gasification rate of partially dehydrogenated species from CH4 decomposition. Additionally, a considerable decline of H2 to CO ratio from 2.14 to 1.83 was detected with reducing H2O/(CH4 + CO2) ratio due to dominant reverse water-gas shift side reaction at H2O-deficient feedstock. Interestingly, 10%Ni/SBA-15 catalyst was resistant to graphitic carbon formation in the co-occurrence of H2O and CO2 oxidizing agents and the mesoporous catalyst structure was still maintained after BRM. A strong correlation between formation of carbonaceous species and catalytic activity was observed. Elsevier 2018-09-06 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/22090/1/Bi-reforming%20of%20methane%20on%20Ni.SBA-15%20catalyst%20for%20syngas%20production.pdf Singh, Sharanjit and Mahadi, Bahari and Bawadi, Abdullah and Phuong, Pham T. T. and Truong, Quang Duc and Vo, Dai-Viet N. and Adesina, Adesoji A. (2018) Bi-reforming of methane on Ni/SBA-15 catalyst for syngas production: Influence of feed composition. International Journal of Hydrogen Energy, 43 (36). pp. 17230-17243. ISSN 0360-3199 https://doi.org/10.1016/j.ijhydene.2018.07.136 10.1016/j.ijhydene.2018.07.136
institution	Universiti Malaysia Pahang
building	UMP Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaysia Pahang
content_source	UMP Institutional Repository
url_provider	http://umpir.ump.edu.my/
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Singh, Sharanjit Mahadi, Bahari Bawadi, Abdullah Phuong, Pham T. T. Truong, Quang Duc Vo, Dai-Viet N. Adesina, Adesoji A. Bi-reforming of methane on Ni/SBA-15 catalyst for syngas production: Influence of feed composition
description	Bi-reforming of methane (BRM) was evaluated for Ni catalyst dispersed on SBA-15 support prepared by hydrothermal technique. BRM reactions were conducted under atmospheric condition with varying reactant partial pressure in the range of 10–45 kPa and 1073 K in fixed-bed reactor. The ordered hexagonal mesoporous SBA-15 support possessing large specific surface area of 669.5 m2 g−1 was well preserved with NiO addition during incipient wetness impregnation. Additionally, NiO species with mean crystallite dimension of 14.5 nm were randomly distributed over SBA-15 support surface and inside its mesoporous channels. Thus, these particles were reduced at various temperatures depending on different degrees of metal-support interaction. At stoichiometric condition and 1073 K, CH4 and CO2 conversions were about 61.6% and 58.9%, respectively whilst H2/CO ratio of 2.14 slightly superior to theoretical value for BRM would suggest the predominance of methane steam reforming. H2 and CO yields were significantly enhanced with increasing CO2/(CH4 + H2O) ratio due to growing CO2 gasification rate of partially dehydrogenated species from CH4 decomposition. Additionally, a considerable decline of H2 to CO ratio from 2.14 to 1.83 was detected with reducing H2O/(CH4 + CO2) ratio due to dominant reverse water-gas shift side reaction at H2O-deficient feedstock. Interestingly, 10%Ni/SBA-15 catalyst was resistant to graphitic carbon formation in the co-occurrence of H2O and CO2 oxidizing agents and the mesoporous catalyst structure was still maintained after BRM. A strong correlation between formation of carbonaceous species and catalytic activity was observed.
format	Article
author	Singh, Sharanjit Mahadi, Bahari Bawadi, Abdullah Phuong, Pham T. T. Truong, Quang Duc Vo, Dai-Viet N. Adesina, Adesoji A.
author_facet	Singh, Sharanjit Mahadi, Bahari Bawadi, Abdullah Phuong, Pham T. T. Truong, Quang Duc Vo, Dai-Viet N. Adesina, Adesoji A.
author_sort	Singh, Sharanjit
title	Bi-reforming of methane on Ni/SBA-15 catalyst for syngas production: Influence of feed composition
title_short	Bi-reforming of methane on Ni/SBA-15 catalyst for syngas production: Influence of feed composition
title_full	Bi-reforming of methane on Ni/SBA-15 catalyst for syngas production: Influence of feed composition
title_fullStr	Bi-reforming of methane on Ni/SBA-15 catalyst for syngas production: Influence of feed composition
title_full_unstemmed	Bi-reforming of methane on Ni/SBA-15 catalyst for syngas production: Influence of feed composition
title_sort	bi-reforming of methane on ni/sba-15 catalyst for syngas production: influence of feed composition
publisher	Elsevier
publishDate	2018
url	http://umpir.ump.edu.my/id/eprint/22090/1/Bi-reforming%20of%20methane%20on%20Ni.SBA-15%20catalyst%20for%20syngas%20production.pdf http://umpir.ump.edu.my/id/eprint/22090/ https://doi.org/10.1016/j.ijhydene.2018.07.136
_version_	1648741132977307648
score	13.211869

Bi-reforming of methane on Ni/SBA-15 catalyst for syngas production: Influence of feed composition

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