Excellent low temperature performance for total benzene oxidation over mesoporous CoMnAl composited oxides from hydrotalcites

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	Excellent low temperature performance for total benzene oxidation over mesoporous CoMnAl composited oxides from hydrotalcites
	Mo, Shengpeng 1,2; Li, Shuangde 1; Li, Wenhui 1,2; Li, Jiaqi 1,2; Chen, Jiayuan 1,2; Chen, Yunfa1
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2016-06-07
卷号	4 期号:21 页码:8113-8122
ISSN号	2050-7488
英文摘要	Mesoporous CoMnAl mixed metal oxide catalysts with various Co/Mn atomic ratios have been obtained by calcination at 450 degrees C of layered double hydroxide (LDH) precursors prepared by the NH4OH co-precipitation-hydrothermal method without distinct MnCO3 peaks. The catalysts exhibited high efficiency for total oxidation of volatile organic compounds (VOCs). The physicochemical properties of the catalysts were characterized using several analytical techniques. Among them, CoMn2AlO shows the optimal activity and the temperature required to achieve a benzene conversion of 90% (T-90) was about 238 degrees C, with a reaction rate and activity energy (E-a) of 0.24 mmol g(cat)(-1) h(-1) and 65.77 kJ mol(-1) respectively. This temperature was 47 degrees C lower than that on the Co3AlO sample with a tower reaction rate of 0.19 mmol g(cat)(-1) h(-1) and a higher E-a 130.31 kJ mol(-1) at a high space velocity (SV = 60 000 mL g(-1) h(-1)). The effects of calcination temperature on the textural properties and catalytic activity of the CoMn2AlO catalyst were further investigated. The as-prepared CoMn2AlO-550 sample displayed superior catalytic activity, with T-90 at 208 degrees C, compared CoMn2AlO-450. The formation of a solid solution with high surface area, rich oxygen vacancies, high Mn4+/Mn3+ and Co3+/Co2+ ratios and low-temperature reducibility made a great contribution to the significant improvement of the catalytic activity.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
研究领域[WOS]	Chemistry ; Energy & Fuels ; Materials Science
关键词[WOS]	LAYERED DOUBLE HYDROXIDES ; VOLATILE ORGANIC-COMPOUNDS ; MG-AL HYDROTALCITE ; CATALYTIC-OXIDATION ; THERMAL-DECOMPOSITION ; MANGANESE OXIDES ; MIXED OXIDES ; COORDINATION POLYMERS ; CARBON-MONOXIDE ; CO OXIDATION
收录类别	SCI
语种	英语
WOS记录号	WOS:000378102400016
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/21169]
专题	过程工程研究所_多相复杂系统国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Mo, Shengpeng,Li, Shuangde,Li, Wenhui,et al. Excellent low temperature performance for total benzene oxidation over mesoporous CoMnAl composited oxides from hydrotalcites[J]. JOURNAL OF MATERIALS CHEMISTRY A,2016,4(21):8113-8122.
APA	Mo, Shengpeng,Li, Shuangde,Li, Wenhui,Li, Jiaqi,Chen, Jiayuan,&Chen, Yunfa.(2016).Excellent low temperature performance for total benzene oxidation over mesoporous CoMnAl composited oxides from hydrotalcites.JOURNAL OF MATERIALS CHEMISTRY A,4(21),8113-8122.
MLA	Mo, Shengpeng,et al."Excellent low temperature performance for total benzene oxidation over mesoporous CoMnAl composited oxides from hydrotalcites".JOURNAL OF MATERIALS CHEMISTRY A 4.21(2016):8113-8122.