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Ag对Cu-Ti-PILC结构和催化性能的影响

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Indexed by:期刊论文

Date of Publication:2015-09-25

Journal:材料导报

Included Journals:PKU、ISTIC、CSCD

Volume:29

Issue:18

Page Number:36-39

ISSN No.:1005-023X

Key Words:Cu-Ti-PILC;NO;Ag/Cu-Ti-PILC

Abstract:采用离子交换法制备了Cu-Ti-PILC样品,采用浸渍法制备了Ag/Cu-Ti-PILC样品.采用X射线衍射谱(XRD)、程序升温还原(TPR)、NO程序升温脱附(NO-TPD)研究银物种对Cu-Ti-PILC结构的影响,以无机物NO为催化反应模型降解物,研究银物种对Cu-Ti-PILC催化性能的影响.结果表明:Ag物种破坏了钛柱层粘土(Ti-PILC)的有序排列性,未改变Ti-PILC的层间结构及铜物种的分散度,改变了铜物种在催化剂表面的分配并提高了Cu2+的比例,改变了NO的反应途径并提高了中间产物的产生量,故导致N2收率提高了约20%,在SO2和H2O存在的条件下,N2收率提高了约12%.

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