TPR法对Co-Fe-Cu/SiO_2催化剂中各组分之间相互作用的研究

Investigation on Co-Fe-Cu/SiO_2 Catalyst by Using Temperature Programmed Reduction

本文采用程序升温还原法（TPll）对CO与H2合成低碳烃催化剂Co-Fe-Cu／SiO2各组分之间的相互作用进行了研究，结果表明钴与铁的混合使钴、铁的氧化物的还原温度明显降低，少量铜的掺入使其还原温度进一步降低，正是由于Co、Fe、Cu之间的强相互作用，才使得Co－Fe－Cu／SiO2对H2与CO反应生成低碳烃显示出很高的催化活性和选择性。

We investigated into the following catalyts:Fe2Q3/SiO2,CoO/SiO2,CoO Fe2O3/SiO2,CoO-Fe2O3-CuO/SiO2for their interaction by using Temperature Programmed Re duction,The results showed that mixing of CoO and Fe2O3 made their reduction temperature de crease and addition of a small amount of copper lead to a further decrease in their reduction tempera ture.It is the strong interaction among CO.Fe and Cu that made Co-Fe-Cu/SiO2 Catalyst show high activity and selectiity for LGP from CO and H2.