费托合成:SiO2和Al2O3负载的Co2C催化剂的表征和评价

引用本文: 裴彦鹏, 丁云杰, 臧娟, 宋宪根, 董文达, 朱何俊, 王涛, 陈维苗. 费托合成:SiO₂和Al₂O₃负载的Co₂C催化剂的表征和评价[J]. 催化学报, 2015, 36(2): 252-259. doi: 10.1016/S1872-2067(14)60179-0 shu

Citation: Yanpeng Pei, Yunjie Ding, Juan Zang, Xiangen Song, Wenda Dong, Hejun Zhu, Tao Wang, Weimiao Chen. Fischer-Tropsch synthesis: Characterizing and reaction testing of Co₂C/SiO₂ and Co₂C/Al₂O₃ catalysts[J]. Chinese Journal of Catalysis, 2015, 36(2): 252-259. doi: 10.1016/S1872-2067(14)60179-0 shu

费托合成:SiO₂和Al₂O₃负载的Co₂C催化剂的表征和评价

裴彦鹏 ^a,c, ,
丁云杰 ^{a,b,
,} ,
臧娟 ^a,c, ,
宋宪根 ^a,c, ,
董文达 ^a,c, ,
朱何俊 ^a, ,
王涛 ^a, ,
陈维苗 ^a,

通讯作者: 丁云杰

摘要: 采用CO碳化SiO₂和Al₂O₃负载的Co(NO₃)₂的方法制备了SiO₂和Al₂O₃负载的Co₂C催化剂, 采用N₂物理吸附、X射线衍射和H₂-程序升温还原技术对催化剂进行了表征, 并用于催化费托合成反应中. 结果显示, 需要较长碳化时间才可合成负载的Co₂C催化剂; 所制催化剂表现出CO加氢生成高碳醇的催化性能, 其原因可能在于催化剂表面存在的金属Co物种使CO解离, 表面Co₂C物种有利于CO插入, 从而导致醇的生成, 但体相Co₂C则不具有催化活性.

关键词:

English

Fischer-Tropsch synthesis: Characterizing and reaction testing of Co₂C/SiO₂ and Co₂C/Al₂O₃ catalysts

1.
a Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China;

Corresponding author: 丁云杰

Received Date: 24 October 2014
Available Online: 20 February 2015

Abstract: SiO₂- and Al₂O₃-supported Co₂C catalysts were prepared by carburizing supported Co precursors with CO. The catalysts were characterized by N₂ physisorption, X-ray diffraction and H₂ temperature-programmed reduction techniques, and evaluated by the Fischer-Tropsch (F-T) reaction. The results showed that SiO₂- and Al₂O₃-supported Co₂C catalysts could be successfully obtained but sufficient carburization time was required. All of the as-prepared supported Co₂C catalysts exhibited activity and selectivity towards alcohols. It is considered that surface metallic Co species contributed to the activity, surface Co₂C species were responsible for the formation of alcohols, and bulk Co₂C species were inert during the F-T reaction.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

费托合成:SiO₂和Al₂O₃负载的Co₂C催化剂的表征和评价

通讯作者: 丁云杰

English

Fischer-Tropsch synthesis: Characterizing and reaction testing of Co₂C/SiO₂ and Co₂C/Al₂O₃ catalysts

Corresponding author: 丁云杰

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