Regulating Role of Cobalt Oxide on Deleterious Chlorine Ion over PdO/SiO2 for CO Oxidation

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	Regulating Role of Cobalt Oxide on Deleterious Chlorine Ion over PdO/SiO2 for CO Oxidation
	Lv GX(吕功煊); Lv GX(吕功煊)
刊名	Journal of Physical Chemistry C
	2009
卷号	113 期号:39 页码:17070-17075
ISSN号	1932-7447
通讯作者	吕功煊
中文摘要	In this paper, the regulating role of CoOx on deleterious Cl- over PdO/SiO2 for CO oxidation has been thoroughly studied. By comparing the catalyst prepared from Pd(NO3)2 and PdCl2, the deleterious effect of Cl- has been confirmed. The addition of CoOx leads to the significant temperature-dependent variation of catalysts performance. Calcination below 500 °C weakens the interaction between PdCl4 2- and silica and results in the remarkable agglomeration of Pd on the silica surface and low activity. However, the presence of CoOx is able to inhibit the agglomeration of PdO at high temperature, and leads catalyst showing higher activity. HRTEM and TPR results support this conclusion and indicate a stronger interaction between PdO and CoO in catalyst after the sample calcined at temperature higher than 500 °C, partially because of the complete decomposition of PdCl2 species. The addition of CoOx can stabilize PdO species, which provide more active centers for the adsorption of reactants. Results also indicated that the CO reaction oxidation occurs at the interface between PdO and CoOx.
学科主题	环境催化与清洁能源
收录类别	SCI
资助信息	The 973 programs (2007CB210204;2007CB613305;2009CB220003)
语种	英语
WOS记录号	WOS:000269999700036
公开日期	2012-09-21
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/551]
专题	兰州化学物理研究所_OSSO国家重点实验室兰州化学物理研究所_ERC国家工程研究中心
通讯作者	Lv GX(吕功煊); Lv GX(吕功煊)
推荐引用方式 GB/T 7714	Lv GX,Lv GX. Regulating Role of Cobalt Oxide on Deleterious Chlorine Ion over PdO/SiO2 for CO Oxidation[J]. Journal of Physical Chemistry C,2009,113(39):17070-17075.
APA	吕功煊,&吕功煊.(2009).Regulating Role of Cobalt Oxide on Deleterious Chlorine Ion over PdO/SiO2 for CO Oxidation.Journal of Physical Chemistry C,113(39),17070-17075.
MLA	吕功煊,et al."Regulating Role of Cobalt Oxide on Deleterious Chlorine Ion over PdO/SiO2 for CO Oxidation".Journal of Physical Chemistry C 113.39(2009):17070-17075.