The influence of preparation method on the properties of NiMo sulfide catalysts supported on ZrO2 |
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| Affiliation: | 1. Department of Environmental Engineering, Yonsei University, 1 Yonseidae-gil, Wonju, Gangwon 220-710, South Korea;2. Biomass and Waste Energy Laboratory, Korea Institute of Energy Research (KIER), Daejeon 305-343, South Korea;3. Petroleum and Gas Research Center, Korea Institute of Energy Research (KIER), Daejeon 305-343, South Korea;4. School of Applied Chemical Engineering, Chonnam National University, Gwangju 500-757, South Korea;1. State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, PR China;2. School of Chemistry and Chemical Engineering, University of Jinan, 250022, PR China;3. Institute Dalian Research Institute of Petroleum and Petrochemicals, SINOPEC, Dalian, 116041, Liaoning, PR China |
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| Abstract: | Highly loaded supported (Ni)Mo sulfide catalysts prepared using different methods have been studied. Two zirconia supports of high specific surface area were used, including amorphous or tetragonal ZrO2 solids. The order of active components introduction as well as thermal treatment conditions were varied. The best performance in the reactions of hydrodesulfurisation of thiophene and hydrogenation of tetralin was shown by the coimpregnated systems sulfidized without calcination of the oxide precursor. Crystallized ZrO2 support always provides higher activities in both reactions, than amorphous zirconia, despite very high specific surface area of the last. The differences between variously treated systems were explained using the results of characterizations including laser Raman spectroscopy, XPS spectroscopy and temperature programmed reduction. |
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