| F-T合成“蛋壳”型Co/ZrO_2/SiO_2催化剂的制备及表征 |
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| 引用本文： | 肖翠微. F-T合成“蛋壳”型Co/ZrO_2/SiO_2催化剂的制备及表征[J]. 煤炭转化, 2010, 33(4) |
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| 作者姓名： | 肖翠微 |
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| 作者单位： | 煤炭科学研究总院,100013,北京 |
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| 基金项目： | 北京市重大科技计划项目(Z09010300840904) |
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| 摘 要： | 采用浸渍法制备了ZrO2改性的的硅胶催化剂载体,并以该载体制备了蛋壳型催化剂,利用BET,SEM和EDS等考察了钴基催化剂的结构和还原性能.结果表明,ZrO2改性的蛋壳型催化剂具有更好的比表面性能;ZrO2改性的载体有利于提高催化剂的分散程度、催化活性及C5+选择性.在温度250℃,压力2MPa,空速500h-1条件下,蛋壳型催化剂上CO转化率可达到89.87%～96.58%,C5+选择性为76.8%～84.7%.
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| 关 键 词： | ZrO2F-T合成 钴基催化剂 蛋壳型 选择性 |
PREPARATION AND CHARACTERIZATION OF EGGSHELL Co/ZrO_2/SiO_2 CATALYSTS FOR THE F-T SYNTHESIS |
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| Xiao Cuiwei. PREPARATION AND CHARACTERIZATION OF EGGSHELL Co/ZrO_2/SiO_2 CATALYSTS FOR THE F-T SYNTHESIS[J]. Coal Conversion, 2010, 33(4) |
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| Authors: | Xiao Cuiwei |
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| Affiliation: | Xiao Cuiwei(China Coal Research Institute,100013 Beijing) |
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| Abstract: | A simple preparation of bimodal porous support was to introduce ZrO2 into bigger pores of formless SiO2 directly,then a kind of eggshell catalyst based on this bimodal porous support was prepared.The structure and reduction property of the catalysts were characterized by SEM,EDS,Brunner-Enunett-Teller(BET) and temperature-programmed-reduction(TPR) techniques.The results show that the BET surface area and pore volume of catalyst were increased compared to the original silica gel and catalyst,catalysis activi... |
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| Keywords: | ZrO2 Fischer-tropsch synthesis cobalt-based catalyst eggshell selectivity |
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