Facile preparation of 3D ordered mesoporous CuOx-CeO2 with notably enhanced efficiency for the low temperature oxidation of heteroatom-containing volatile organic compounds

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境纳米材料实验室

	Facile preparation of 3D ordered mesoporous CuOx-CeO2 with notably enhanced efficiency for the low temperature oxidation of heteroatom-containing volatile organic compounds
	He, Chi ; Yu, Yanke ; Chen, Changwei ; Yue, Lin ; Qiao, Nanli ; Shen, Qun ; Chen, Jinsheng ; Hao, Zhengping
刊名	RSC ADVANCES
	2013
卷号	3 期号:42 页码:19639-19656
通讯作者	Chen, JS
中文摘要	SBA-16 silica with intact surface hydroxyl groups was quickly obtained (5 min) via a fast-microwave-assisted method, and further adopted as an efficient template for the synthesis of three-dimensional (3D) ordered mesoporous CuOx-CeO2 catalysts (htpCCx) through a simple and reproducible host-guest interaction. XRD, XPS, H-2-TPR, and Raman results reveal that many of the Cu2+ ions in htpCCx are incorporated into the CeO2 lattice, leading to the formation of a CuxCe1-xO2-delta solid solution, which produces a large number of oxygen vacancies and enhances the reducibility of the metal. The interaction of Cu and Ce is essential to the reaction as it maintains the Cu2+/Cu1+ and Ce4+/Ce3+ redox couples. The catalyst has a 3D mesostructure and possesses remarkably enhanced low-temperature activity for the combustion of epichlorohydrin. HtpCC20 has been identified as the most powerful catalyst for this reaction, with the reaction rate at 165 degrees C being about 6.3 and 33.3 times higher than those of catalysts synthesized using conventional incipient impregnation and thermal combustion methods, respectively. Furthermore, htpCC20 shows superior CO2 selectivity (>99%) and stability (no deactivation occurs after 50 h reaction). It is believed that the dispersion of the active phase, density of surface active oxygen, and low-temperature reducibility are the dominant factors governing the catalytic performance.
收录类别	SCI
WOS记录号	WOS:000325554400055
公开日期	2014-06-05
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/7345]
专题	生态环境研究中心_环境纳米材料实验室
推荐引用方式 GB/T 7714	He, Chi,Yu, Yanke,Chen, Changwei,et al. Facile preparation of 3D ordered mesoporous CuOx-CeO2 with notably enhanced efficiency for the low temperature oxidation of heteroatom-containing volatile organic compounds[J]. RSC ADVANCES,2013,3(42):19639-19656.
APA	He, Chi.,Yu, Yanke.,Chen, Changwei.,Yue, Lin.,Qiao, Nanli.,...&Hao, Zhengping.(2013).Facile preparation of 3D ordered mesoporous CuOx-CeO2 with notably enhanced efficiency for the low temperature oxidation of heteroatom-containing volatile organic compounds.RSC ADVANCES,3(42),19639-19656.
MLA	He, Chi,et al."Facile preparation of 3D ordered mesoporous CuOx-CeO2 with notably enhanced efficiency for the low temperature oxidation of heteroatom-containing volatile organic compounds".RSC ADVANCES 3.42(2013):19639-19656.