Study On Thiophene Hydrodesulfurization Performance Of SBA-15 Supported Ni-B Amorphous Alloy Catalyst

In this paper, with chemical reduction method Ni-B/SBA-15 amorphous alloy catalyst was prepared using different modified SBA-15 as surpports. The catalytic activity of catalysts was characterized with thiophene hydrodesulfurization reaction. Moreover, supports and catalysts were characterized by ICP, small-angle XRD, TPR, TPD, SEM and TEM.In the first part of this thesis, SBA-15 was modified with TsOH by in situ synthesis and post treatment modification method respectively. It was found that the catalyst performance of Ni-B catalysts supported by SBA-15 containing TsOH was better than the one supported by pure SBA-15. SBA-15 modified with TsOH by both two kinds of methods has more acid sites and harder acid ability, which would benefit for breaking C-S bond and then improving efficiency of catalyst.In the second part, Ni-B/SBA-15-APTS which has higher catalytic activity was prepared. The complexation between -NH2 and Ni2+ was benefit for the good dispersion of Ni-B alloy particles and more Ni2+ could be reduced. ICP results also show that quantity of Ni supported in SBA-15-APTS was bigger than pure SBA-15, and the content of Ni in Ni-B amorphous alloy was increased.Finaly, Ni-B amorphous alloy was prepared with ZnO-SBA-15 composite support was prepared. It was discovered that the hydrodesulfurization poperty of catalyst with ZnO-SBA-15 composite support was decreased with the introduction of ZnO. While the preparation process was much easier than the one of SBA-15, and the cost of the former also was lower than the latter. So ZnO-SBA-15 composite support with certain quantity of ZnO was considerable for hydrodesulfurization.