Nanometric palladium confined in mesoporous silica as efficient catalysts for toluene oxidation at low temperature

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

	Nanometric palladium confined in mesoporous silica as efficient catalysts for toluene oxidation at low temperature
	He, Chi ; Zhang, Fuwang ; Yue, Lin ; Shang, Xuesong ; Chen, Jinsheng ; Hao, Zhengping
刊名	Chemistry; Engineering
	2012
卷号	111 期号:1 页码:46-57
关键词	Mesoporous silica Two-solvents technique Pd-confined Controllable acidity Volatile organic compounds
ISSN号	0926-3373
中文摘要	Short column SBA-15 supported Pd mesoporous catalysts with controllable acidity and expanded micro-porosity were firstly prepared through a simple "two-solvents" approach. The catalytic performances of the synthesized catalysts were evaluated for toluene oxidation. The characterization results reveal that Al atoms prefer to be tetrahedrally coordinated in the framework of the synthesized materials, and the acid sites can significantly promote Pd particle dispersion and metallic Pd oxidation due to their electrophilic characters. The Pd-confined catalysts possess high toluene turnover frequencies and toluene can be totally converted to CO2 and H2O below 210 degrees C. The oxidation reaction can be suppressed by water vapor due to the formation of inactive Pd-hydroxides, and the synthesized catalyst has a good hydrothermal stability and high tolerance to moisture. Both the specific surface area and the toluene adsorption/desorption property are not the main factors determining the catalytic activity. Overall, the toluene oxidation performance is closely related to the support microporosity and acidity, the Pd dispersion and the CO2 desorption capability. (C) 2011 Elsevier B.V. All rights reserved.
WOS记录号	WOS:000300528500006
公开日期	2014-11-28
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/8100]
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,Zhang, Fuwang,Yue, Lin,et al. Nanometric palladium confined in mesoporous silica as efficient catalysts for toluene oxidation at low temperature[J]. Chemistry; Engineering,2012,111(1):46-57.
APA	He, Chi,Zhang, Fuwang,Yue, Lin,Shang, Xuesong,Chen, Jinsheng,&Hao, Zhengping.(2012).Nanometric palladium confined in mesoporous silica as efficient catalysts for toluene oxidation at low temperature.Chemistry; Engineering,111(1),46-57.
MLA	He, Chi,et al."Nanometric palladium confined in mesoporous silica as efficient catalysts for toluene oxidation at low temperature".Chemistry; Engineering 111.1(2012):46-57.