NiO/SBA-15触媒を用いた熱分解ガスの変換
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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.