eprintid: 10026
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/00/26
datestamp: 2023-11-09 16:36:40
lastmod: 2023-11-09 16:36:40
status_changed: 2023-11-09 16:30:24
type: article
metadata_visibility: show
creators_name: Singh, S.
creators_name: Bahari, M.B.
creators_name: Abdullah, B.
creators_name: Phuong, P.T.T.
creators_name: Truong, Q.D.
creators_name: Vo, D.-V.N.
creators_name: Adesina, A.A.
title: Bi-reforming of methane on Ni/SBA-15 catalyst for syngas production: Influence of feed composition
ispublished: pub
keywords: Carbon dioxide; Catalyst activity; Chemical reactors; Mesoporous materials; Methane; Nickel oxide; Silica; Synthesis gas; Synthesis gas manufacture; Water gas shift, Incipientwetness impregnation; Large specific surface areas; Mesoporous Silica; Metal-support interactions; Methane steam reforming; Ni/SBA-15; Reverse water gas shift; Syn-gas, Steam reforming
note: cited By 54
abstract: 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, 10Ni/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. © 2018 Hydrogen Energy Publications LLC
date: 2018
publisher: Elsevier Ltd
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85051391747&doi=10.1016%2fj.ijhydene.2018.07.136&partnerID=40&md5=3188cf38ac6a33496bc414f00bb4bd19
id_number: 10.1016/j.ijhydene.2018.07.136
full_text_status: none
publication: International Journal of Hydrogen Energy
volume: 43
number: 36
pagerange: 17230-17243
refereed: TRUE
issn: 03603199
citation:   Singh, S. and Bahari, M.B. and Abdullah, B. and Phuong, P.T.T. and Truong, Q.D. and Vo, D.-V.N. and Adesina, A.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 03603199