@article{scholars10026, doi = {10.1016/j.ijhydene.2018.07.136}, title = {Bi-reforming of methane on Ni/SBA-15 catalyst for syngas production: Influence of feed composition}, pages = {17230--17243}, note = {cited By 54}, number = {36}, journal = {International Journal of Hydrogen Energy}, year = {2018}, volume = {43}, publisher = {Elsevier Ltd}, 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}, author = {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.}, 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}, 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{\^a}??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{\^a}??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. {\^A}{\copyright} 2018 Hydrogen Energy Publications LLC}, issn = {03603199} }