| CO和H2在Cu-Fe催化剂上TPD研究 |
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| 引用本文： | 徐杰,杜宝石.CO和H2在Cu-Fe催化剂上TPD研究[J].工业催化,1998,6(4):52-57. |
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| 作者姓名： | 徐杰 杜宝石 |
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| 作者单位： | 1.郑州大学化学化工学院 郑州 450052; 2.中科院大连化学物理研究所 辽宁大连 116023 |
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| 摘 要： | 用XRD、TG-DTG、CO-TPD和H2-TPD等技术, 对三种Cu-Fe催化剂的物相、还原和程序升温脱附行为进行研究, 发现不同制备方法得到的CuO-Fe2O3复合体系间存在着不同的相互作用。高温焙烧后形成化合物CuFe2O4, 浸渍型样品使得CO在表面的吸附中心均匀化。不同的相互作用导致CO和H2的吸附中心种类、相对数量发生变化求得了各类脱附中心的反应级数n和活化能Ed。
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| 关 键 词： | 合成气 Cu-Fe催化剂 程序升温脱附 |
TPD Study of CO and H2 Over Cu-Fe Catalysts |
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| Xu Jie,Bai Changmin,Du Baoshi,Xin Qin,Li Chan.TPD Study of CO and H2 Over Cu-Fe Catalysts[J].Industrial Catalysis,1998,6(4):52-57. |
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| Authors: | Xu Jie Bai Changmin Du Baoshi Xin Qin Li Chan |
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| Affiliation: | 1.Coll Chemistry&Chem Eng,Zhengzhou Univ,Zhengzhou,450052; 2.Dalian Inst Chem Phys,Chinese Acad Sci,Dalian,Liaoning,116023 |
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| Abstract: | The interation among Cu-Fe catalysts was studied by XRD,TG-DTG,CO-TPD and H2-TPD techniques.It was found that CuFe2O4 compound was formed when mechanically mixed CuO and Fe2O3 wascalcined over 850℃. Aother type of interaction made the adsorption centers for CO homogeneous on the sample prepared by impregnation of Fe(NO3)3·9H2O on CuO powder. Different type of interaction in the catalyst result in difference in the type and relative amont of adsorption centeers for CO and H2 on the catalyst surface.The reaction order n and activation energy Ed for CO and H2 desorption on different centers was obtioned. |
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| Keywords: | Cu-Fe catalyst temperature-programmed-desorption synthesis gas |
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