Abstract
Through a facial immersion method, thiomolybdates [Mo3S(S2)6]2 − and [Mo2(S2)6]2 − clusters have been successfully anchored on SBA-15, and the loaded catalyst was characterized by various methods. The terminal/bridging sulfur atoms on the sulfide cluster have a strong tendency to combine with H atom and then transferred to the S atom of thiophene for hydrodesulfurization. The catalytic activity and desulfurization selectivity of the supported catalysts Mo3S13/SBA-15 and Mo2S12/SBA-15 were investigated at different temperature and different time. Direct hydrogenation of thiophene occurs presumably with the participation of –SH groups, produced from the opening of S–S bridges by hydrogen. And the desulfurization of thiophene occurs presumably with the breaking of C–S bond and formation of C-OH bond for the product is butanol. Mo3S13/SBA-15 and Mo2S12/SBA-15 display excellent catalytic performance. The conversion rate of thiophene is about 97% for Mo3S13/SBA-15 and 94% for Mo2S12/SBA-15, while the desulfurization selectivity is about 97% (Mo2S12/SBA-15) and 82% (Mo3S13/SBA-15).
Published Version
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