Conversion of producer gas from gasification-reforming process using NiO/SBA-15

By post synthesis method, the NiO particles were inserted into the SBA-15 pores. The NiO/SBA-15 prepared by post synthesis method exhibited high efficiency and selectivity for methanation. The conversion for methanation was increased with increasing NiO loading, when the NiO loading exceeded 50 wt%, the CH₄ selectivity was 100 %. By direct method, the NiO particles were dispersed into the SiO₂ structure of SBA-15. The NiO/SBA-15 obtained by direct synthesis method exhibited excellent efficiency, and selectivity for producer gas conversion to CO comparable to that obtained by post synthesis method. The synthesis method affected the CO selectivity. The temperature and H₂/CO₂ ratio played an important role in CO₂ conversion to CO. The NiO loading did not affect the CO₂ conversion to CO. Although there was no difference in CO selectivity at high temperature, it was influenced greatly by NiO loading at low temperature as a result of CH₄ formation.