| SBA-15的硅烷化对钴基催化剂费-托合成性能的影响 |
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| 引用本文： | 闪媛媛,刘光荣,李金林.SBA-15的硅烷化对钴基催化剂费-托合成性能的影响[J].催化学报,2009,30(11). |
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| 作者姓名： | 闪媛媛 刘光荣 李金林 |
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| 作者单位： | 中南民族大学催化材料科学湖北省暨国家民委-教育部共建重点实验室,湖北武汉,430074;中南民族大学催化材料科学湖北省暨国家民委-教育部共建重点实验室,湖北武汉,430074;中南民族大学催化材料科学湖北省暨国家民委-教育部共建重点实验室,湖北武汉,430074 |
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| 基金项目： | Foundation item: Supported by the National Natural Science Foundation of China (20590360 and 20773166) |
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| 摘 要： | 以未硅烷化和硅烷化的SBA-15为载体,采用满孔浸渍法制备了钴基费-托合成催化剂,通过元素分析、N_2吸附-脱附、X射线衍射、H_2程序升温还原、H_2程序升温脱附以及氧滴定等手段对催化剂进行了表征.催化剂的费-托合成活性测试在固定床反应器上进行.研究表明,对于SBA-15硅烷化后制备的催化剂,金属钴与载体之间的相互作用降低,氧化钴的还原度增加.随着三甲基氯硅烷用量的增加,三甲基硅基的表面覆盖度增加,钴的晶粒直径增大.硅烷化后的催化剂的高活性归因于高的还原度.而C_(5+)选择性的增加则归因于钴晶粒直径的增大.
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| 关 键 词： | 硅烷化 SBA-15 钴基催化剂 费-托合成 三甲基硅基 |
Effect of Silylation of SBA-15 on Its Supported Cobalt Catalysts for Fischer-Tropsch Synthesis |
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| SHAN Yuanyuan,LIEW Kongyong,LI Jinlin.Effect of Silylation of SBA-15 on Its Supported Cobalt Catalysts for Fischer-Tropsch Synthesis[J].Chinese Journal of Catalysis,2009,30(11). |
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| Authors: | SHAN Yuanyuan LIEW Kongyong LI Jinlin |
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| Institution: | SHAN Yuanyuan,LIEW Kongyong,LI Jinlin Key Laboratory of Catalysis , Materials Science of the State Ethnic Affairs Commission , Ministry of Education,South-Central University for Nationalities,Wuhan 430074,Hubei,China |
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| Abstract: | Cobalt catalysts supported on unsilylated and silylated SBA-15 were prepared by incipient wetness impregnation and characterized by elemental analysis, N2 adsorption-desorption, X-ray diffraction, H2 temperature-programmed reduction, H2 temperature-programmed desorption, and oxygen titration. Their catalytic properties for Fischer-Tropsch synthesis were evaluated in a fixed-bed reactor. The results show that the interaction between cobalt and the support was decreased, and the reducibility of the cobalt oxi... |
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| Keywords: | SBA-15 silylation SBA-15 cobalt-based catalyst Fischer-Tropsch synthesis trimethylsilyl |
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