| 利用程序升温还原方法研究钴,钌,钼加氢脱硫催化剂氧化态的还原过程 |
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| 引用本文： | 李新生,辛勤,郭燮贤. 利用程序升温还原方法研究钴,钌,钼加氢脱硫催化剂氧化态的还原过程[J]. 燃料化学学报, 1992, 0(4) |
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| 作者姓名： | 李新生 辛勤 郭燮贤 |
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| 作者单位： | 中国科学院大连化学物理研究所，中国科学院大连化学物理研究所，中国科学院大连化学物理研究所 国家重点催化实验室 大连 116023，国家重点催化实验室 大连 116023，国家重点催化实验室 大连 116023 |
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| 摘 要： | 钴或镍在加氢脱硫(HDS)催化剂中的助剂作用文献已有很多的讨论。近年来,研究结果发现,少量的钌加入到Mo/Al_2O_3和Co-Mo/Al_2O_3催化剂上可以显著地提高其加氢脱硫活性,可是关于钌的助剂作用前人研究的较少。因此对比研究钴和钌的的助剂作用有助于认识各种不同类型的助剂在加氢脱硫催化剂中的功能。本文应用程序升温还原方法对钴和钌在加氢脱硫催化剂的前身态氧化物还原过程中的助剂作用进行了考察。
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| 关 键 词： | 程序升温还原(TPR) 加氢脱硫催化剂 钴和钌的作用 |
TEMPERATURE PROGRAMMED REDUCTION OF COBALT, RUTHENIUM AND MOLYBDENUM CATALYSTS FOR HYDRODESULFURIZATION |
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| Li Xinsheng Xin Qin Guo Xiexian. TEMPERATURE PROGRAMMED REDUCTION OF COBALT, RUTHENIUM AND MOLYBDENUM CATALYSTS FOR HYDRODESULFURIZATION[J]. Journal of Fuel Chemistry and Technology, 1992, 0(4) |
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| Authors: | Li Xinsheng Xin Qin Guo Xiexian |
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| Abstract: | Temperature programmed reduction has been used to study the reduction of Mo, Co, Ru oxide catalysts. It is found that octahedral and tetrahedral Mo sites on Mo/Al_2O_3 oxide catalysts are reduced at 800K and 1180K respectively. Three kinds of Co sites were found to exist on Co/Al_2O_3 oxide catalysts, i.e. octahedral and tetrahedral Co sites and Co_3O_4 phase corresponding to reduction peaks at 700K, 940K and 850K. On the Co-Mo/Al_2O_3 oxide catalysts cobalt mainly interacted with Mo sites to form a CoMoO mixed phase, but had no evident influence on the reduction of Mo sites. In contrast to cobalt, ruthenium showed an enhancing effect for the reduction of Mo sites, and lowered the reducing temperature of octahedral Mo sites by 230K. These facts are explained by the dissociation of hydrogen on ruthenium and its spillover to Mo sites. |
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| Keywords: | temperature programmed reduction catalysts for hydrodesulfurization cobalt and ruthenium promotion |
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