Mesoporous Co3O4 and Au/Co3O4 Catalysts for Low-Temperature Oxidation of Trace Ethylene

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	Mesoporous Co3O4 and Au/Co3O4 Catalysts for Low-Temperature Oxidation of Trace Ethylene
	Ma, Chun Yan; Mu, Zhen; Li, Jin Jun; Jin, Yong Gang; Cheng, Jie; Lu, Gao Qing; Hao, Zheng Ping; Qiao, Shi Zhang
刊名	JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
	2010-03-03
卷号	132 期号:8 页码:2608-2613
中文摘要	Low-temperature catalysts of mesoporous Co3O4 and AU/Co3O4 with high catalytic activities for the trace ethylene oxidation at 0 degrees C are reported in this paper. The catalysts were prepared by using the nanocasting method, and the mesostructure was replicated from three-dimensional (3D) cubic KIT-6 silicas. High resolution transmission electron microscopy (HRTEM) studies revealed that {110} facets were the exposed active surfaces in the mesoporous Co3O4, whereas the Co3O4 nanosheets prepared by the precipitation method exhibited the most exposed {112} facets. We found that the mesoporous Co3O4 was significantly more active for ethylene oxidation than the Co3O4 nanosheets. The results indicated that the crystal facet {110} of Co3O4 played an essential role in determining its catalytic oxidation performance. The synthesized Au/Co3O4 materials, in which the gold nanoparticles were assembled into the pore walls of the Co3O4 mesoporous support, exhibited stable, highly dispersed, and exposed gold sites. Gold nanoparticles present on Co3O4 readily produced surface-active oxygen species and promoted ethylene oxidation to achieve a 76% conversion at 0 degrees C, which is the highest conversion reported yet.
WOS记录号	WOS:000275117900042
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/21103]
专题	生态环境研究中心_环境化学与生态毒理学国家重点实验室
推荐引用方式 GB/T 7714	Ma, Chun Yan,Mu, Zhen,Li, Jin Jun,et al. Mesoporous Co3O4 and Au/Co3O4 Catalysts for Low-Temperature Oxidation of Trace Ethylene[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2010,132(8):2608-2613.
APA	Ma, Chun Yan.,Mu, Zhen.,Li, Jin Jun.,Jin, Yong Gang.,Cheng, Jie.,...&Qiao, Shi Zhang.(2010).Mesoporous Co3O4 and Au/Co3O4 Catalysts for Low-Temperature Oxidation of Trace Ethylene.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,132(8),2608-2613.
MLA	Ma, Chun Yan,et al."Mesoporous Co3O4 and Au/Co3O4 Catalysts for Low-Temperature Oxidation of Trace Ethylene".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 132.8(2010):2608-2613.