Effect of Thermal Treatment under Nitrogen on the Ammonium Thiosulfate-Presulfidized Mo/Al2O3 Catalyst

Chinese Journal of Catalysis ›› 2009, Vol. 30 ›› Issue (2): 111-118.

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Effect of Thermal Treatment under Nitrogen on the Ammonium Thiosulfate-Presulfidized Mo/Al2O3 Catalyst

GE Hui1,2, LI Xuekuan1*, FAN Weibin1, QIN Zhangfeng1, L Zhanjun1, WANG Jianguo1

1 State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, The Chinese Academy of Sciences, Taiyuan 030001, Shanxi, China; 2 College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

Received:2009-02-25 Online:2009-02-25 Published:2012-11-21

Abstract

Abstract: The (NH4)2S2O3-presulfidized Mo/Al2O3 catalyst pretreated with N2 at 80 ℃ gave the highest thiophene conversion. This is due to the modification of the Al2O3 support by sulfate ions, forming a highly active Type II MoS2 st ructure. Whereas an increase in the N2-pretreatment temperature above 200 ℃ led to a decomposition of (NH4)2S2O3, forming less active Type I MoS2 structure.

Key words: nitrogen thermal treatment, ammonium thiosulfate, presulfidation, molybdenum disulfide, alumina, hydrodesufurization

GE Hui;LI Xuekuan*;FAN Weibin;QIN Zhangfeng;L Zhanjun;WANG Jianguo. Effect of Thermal Treatment under Nitrogen on the Ammonium Thiosulfate-Presulfidized Mo/Al2O3 Catalyst[J]. Chinese Journal of Catalysis, 2009, 30(2): 111-118.

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Effect of Thermal Treatment under Nitrogen on the Ammonium Thiosulfate-Presulfidized Mo/Al2O3 Catalyst

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