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铜基甲醇合成催化剂的TPD研究
TPD studies on copperbased catalysts for methanol synthesis
【摘要】 采用TPD方法比较研究了H2和CO分别在ZnO、ZnO/Al2O3、CuO/ZnO/Al2O3和CuO/ZnO/Al2O3/CeO2等催化剂上的吸附行为,讨论了铜基甲醇合成催化剂可能的吸附位,结果表明改进型的CuO/ZnO/Al2O3/CeO2催化剂中Cu+/Cu0比CuO/ZnO/Al2O3催化剂多,这有利于提高合成甲醇的速率。
【Abstract】 The adsorption behaviors and sites possible for methanol synthesis from syngas on ZnO, ZnO/Al2O3,CuO/ZnO/Al2O3 and CuO/ZnO/Al2O3/CeO2 were comparatively investigated by using H2TPD and COTPD, respectively.The results revealed that the ratio of Cu+/Cu0 in the modified fourcomponent catalyst CuO/ZnO/Al2O3/CeO2 was larger than that in the catalyst CuO/ZnO/Al2O3,suggesting that modified one might have more efficiently catalytic activity for methanol synthesis.
- 【文献出处】 天然气化工 ,Natural Gas Chemical Industry , 编辑部邮箱 ,1998年02期
- 【分类号】TQ426.6
- 【被引频次】5
- 【下载频次】149