Role of different coordinated Cu and reactive oxygen species on the highly active Cu-Ce-Zr mixed oxides in NH3-SCO: a combined in situ EPR and O-2-TPD approach

doi:10.1039/c5cy02125a

QIBEBT-IR > 多相催化转化研究组

	Role of different coordinated Cu and reactive oxygen species on the highly active Cu-Ce-Zr mixed oxides in NH3-SCO: a combined in situ EPR and O-2-TPD approach
	Qu, Zhenping 1; Wang, Zhong1,2 ; Zhang, Xiaoyu 1; Wang, Hui 1
	2016
发表期刊	CATALYSIS SCIENCE & TECHNOLOGY
卷号	6 期号:12 页码:4491-4502
摘要	Novel Cu-Ce-Zr mixed oxides were synthesized by a citric acid sol-gel method, and they exhibited an excellent NH3-SCO activity (180 degrees C, TOF = 1.33 h(-1)). The finely dispersed CuO, Cu-Ce-Zr solid solution and monomeric Cu2+ ions in octahedral sites were the main active sites. The finely dispersed CuO species were the NH3 adsorption sites, and their adsorption capacity could be improved by their good reducibility. The Cu-Ce-Zr solid solution was an important intermediate in oxygen transfer from bulk to surface. In situ EPR analysis indicated that the isolated Cu2+ located in the octahedral sites was more active compared with that located in the square-planar pyramidal sites, and it induced the formation of more Cu-Ce-Zr solid solution. Meanwhile, the in situ O-2-TPD results showed that both adsorbed oxygen and bulk lattice oxygen were the active oxygen adspecies, and the adsorbed oxygen molecules were more active than the bulk lattice oxygen in NH3 oxidation.
文章类型	Article
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1039/c5cy02125a
关键词[WOS]	SELECTIVE CATALYTIC-OXIDATION ; ELECTRON-PARAMAGNETIC-RESONANCE ; COPPER(II) ION-PAIRS ; SILVER-BASED CATALYSTS ; TRANSITION-METAL ; COMPOSITE CATALYST ; SOOT COMBUSTION ; AMMONIA ; NITROGEN ; TEMPERATURE
收录类别	SCI
语种	英语
WOS研究方向	Chemistry
项目资助者	National Natural Science Foundation of China(21377016 ; Natural Science Foundation of Liaoning Province(2014020011) ; Doctoral Fund of Shandong Province(BS2015HZ003) ; Open Foundation of Key Laboratory of Industrial Ecology and Environmental Engineering, MOE(KLIEEE-15-05) ; 21577014)
WOS类目	Chemistry, Physical
WOS记录号	WOS:000378276300045
引用统计	被引频次：64[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/9360
专题	多相催化转化研究组
作者单位	1.Dalian Univ Technol, Key Lab Ind Ecol & Environm Engn, Sch Environm Sci & Technol, Dalian 116024, Peoples R China 2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Key Lab Biofuels, Qingdao 266101, Peoples R China
推荐引用方式 GB/T 7714	Qu, Zhenping,Wang, Zhong,Zhang, Xiaoyu,et al. Role of different coordinated Cu and reactive oxygen species on the highly active Cu-Ce-Zr mixed oxides in NH3-SCO: a combined in situ EPR and O-2-TPD approach[J]. CATALYSIS SCIENCE & TECHNOLOGY,2016,6(12):4491-4502.
APA	Qu, Zhenping,Wang, Zhong,Zhang, Xiaoyu,&Wang, Hui.(2016).Role of different coordinated Cu and reactive oxygen species on the highly active Cu-Ce-Zr mixed oxides in NH3-SCO: a combined in situ EPR and O-2-TPD approach.CATALYSIS SCIENCE & TECHNOLOGY,6(12),4491-4502.
MLA	Qu, Zhenping,et al."Role of different coordinated Cu and reactive oxygen species on the highly active Cu-Ce-Zr mixed oxides in NH3-SCO: a combined in situ EPR and O-2-TPD approach".CATALYSIS SCIENCE & TECHNOLOGY 6.12(2016):4491-4502.