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/ http://umpir.ump.edu.my/id/eprint/22090/ http://umpir.ump.edu.my/id/eprint/22090/ http://umpir.ump.edu.my/id/eprint/22090/1/Bi-reforming%20of%20methane%20on%20Ni.SBA-15%20catalyst%20for%20syngas%20production.pdf

id	ump-22090
recordtype	eprints
spelling	ump-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
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
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/ http://umpir.ump.edu.my/id/eprint/22090/ http://umpir.ump.edu.my/id/eprint/22090/ http://umpir.ump.edu.my/id/eprint/22090/1/Bi-reforming%20of%20methane%20on%20Ni.SBA-15%20catalyst%20for%20syngas%20production.pdf
first_indexed	2023-09-18T22:32:42Z
last_indexed	2023-09-18T22:32:42Z
_version_	1777416391894237184

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

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