Journal
JOURNAL OF NATURAL GAS CHEMISTRY
Volume 19, Issue 4, Pages 369-374Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S1003-9953(09)60096-7
Keywords
biogas; reforming; syngas; oxygen; steam; Ni-based catalyst; SBA-15
Funding
- National Basic Research Program of China [2005CB221405]
- National 863 Project of China [2006AA10Z425]
- Beijing Natural Science Foundation [8062023]
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A series of Ni/SBA-15 catalysts with Ni contents from 7.5 wt% to 15 wt% were prepared by impregnation method. The effect of O-2 and H2O on the combined reforming of the simulated biogas to syngas was investigated in a continuous flow fixed-bed micro-reactor. The stability of the catalyst was tested at 800 degrees C. The results indicated that 10wt%Ni/SBA-15 catalyst exhibited the highest catalytic activities for the combined reforming of the simulated biogas to syngas. Under the reaction conditions of the feed gas molar ratios CH4/CO2/O-2/H2O = 2/1/0.6/0.6, GHSV = 24000 ml.g(cat)(-1).h(-1) and the reaction temperature T = 800 degrees C, the conversions of CH4 and CO2 were 92.8% and 76.3%, respectively, and the yields of CO and H-2 were 99.0% and 82.0%, respectively. The catalytic activities of the catalyst did not decrease obviously after 100 h reaction time on stream.
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