Citation:
WANG Teng-fei, ZHANG Ye, GE Hui, TANG Ming-xing, ZHOU Li-gong, LÜ Zhan-jun, LI Xue-kuan. Hydrodesulfurization of thiophene over Mo/AC catalyst presulfided by ammonium thiosulfate[J]. Journal of Fuel Chemistry and Technology,
;2015, 43(2): 202-207.
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Through the impregnation of Mo/AC catalyst with an aqueous solution of ammonium thiosulfate (ATS), the ex-situ presulfided Mo/AC-ATS catalyst was prepared; the influence of activation temperature and time on the catalytic performance in the hydrodesulfurization (HDS) of thiophene as a probe reaction was investigated. The result indicated that under the optimized activation conditions, viz., 300 ℃ and 0.5 h, the conversions of thiophene over the presulfided Mo/AC-ATS catalyst are 34% and 42% higher than those obtained over the Mo/AC catalysts sulfided with traditional DMDS and CS2 sulfiding agents, respectively. The XPS, TPR-MS and TEM results demonstrated that the presulfided Mo/AC-ATS has a high content of Mo4+, which may contribute to its high activity in HDS.
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