Catalytic combustion of methane on novel catalysts derived from Cu-Mg/Al-hydrotalcites

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

	Catalytic combustion of methane on novel catalysts derived from Cu-Mg/Al-hydrotalcites
	Jiang, Z; Hao, ZP; Yu, JJ; Hou, HX; Hu, C; Su, JX
刊名	CATALYSIS LETTERS
	2005
卷号	99 期号:2015-03-04 页码:157-163
关键词	methane catalytic combustion copper-containing oxides hydrotalcites
英文摘要	Novel Cu-Mg/Al mixed oxides (designated as i-CMAO-800) were prepared by calcinations of Cu-Mg/Al hydrotalcites [(Cu2++Mg2+)/Al3+=3] at 800degreesC. Their performance for the catalytic combustion of methane was investigated. The oxides and their precursors were characterized by XRD, TG-DSC, TPR and N-2 adsorption/desorption techniques. The results showed that BET surface areas and the stability of the resultant oxides were greatly influenced by the copper contents in hydrotalcite precursors, bringing about difference in their activities for methane catalytic combustion. XRD results indicated that Cu was highly dispersed in hydrotalcite precursors in case of low copper contents, (Cu 40 wt%). For higher Cu contents, Cu(OH)(2) was formed, and, consequently, a separate phase of CuO was detected in the oxide catalysts after calcination. As indicated by the TG-DSC results, different decomposition behaviors were observed for various hydrotalcites. Thermal calcination promoted the formation of copper aluminates and segregation of CuO from the bulk phases. TPR results showed 15CMAO-800 has the highest reduction rate, and the catalytic activities of iCMAO-800 mixed oxides depend on both the reduction rates and the amounts of copper ions in mixed oxides. The catalyst 15-CMAO-800 showed the best performance.
学科主题	Chemistry
研究领域[WOS]	Chemistry
WOS记录号	WOS:000226758400007
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/23253]
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	Jiang, Z,Hao, ZP,Yu, JJ,et al. Catalytic combustion of methane on novel catalysts derived from Cu-Mg/Al-hydrotalcites[J]. CATALYSIS LETTERS,2005,99(2015-03-04):157-163.
APA	Jiang, Z,Hao, ZP,Yu, JJ,Hou, HX,Hu, C,&Su, JX.(2005).Catalytic combustion of methane on novel catalysts derived from Cu-Mg/Al-hydrotalcites.CATALYSIS LETTERS,99(2015-03-04),157-163.
MLA	Jiang, Z,et al."Catalytic combustion of methane on novel catalysts derived from Cu-Mg/Al-hydrotalcites".CATALYSIS LETTERS 99.2015-03-04(2005):157-163.