%0 Journal Article
%@ 03603199
%A Singh, S.
%A Bahari, M.B.
%A Abdullah, B.
%A Phuong, P.T.T.
%A Truong, Q.D.
%A Vo, D.-V.N.
%A Adesina, A.A.
%D 2018
%F scholars:10026
%I Elsevier Ltd
%J International Journal of Hydrogen Energy
%K 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
%N 36
%P 17230-17243
%R 10.1016/j.ijhydene.2018.07.136
%T Bi-reforming of methane on Ni/SBA-15 catalyst for syngas production: Influence of feed composition
%U https://khub.utp.edu.my/scholars/10026/
%V 43
%X 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
%Z cited By 54