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	Activity and characterization of modified Cr2O3/ZrO2 nano-composite catalysts for oxidative dehydrogenation of ethane to ethylene with CO2
	Deng, Shuang; Li, Huiquan; Li, Songgeng; Zhang, Yi
刊名	JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
	2007-05-01
卷号	268期号:1-2页码:169-175
关键词	Cr2O3/ZrO2 nano-composite catalyst modifier CO2 dehydrogenation ethane ethylene
ISSN号	1381-1169
其他题名	J. Mol. Catal. A-Chem.
中文摘要	Cr2O3/ZrO2 nano-composite catalysts modified with Ni, Fe, Co, Mn oxides respectively were synthesized by coupling co-precipitation with azeotropic distillation method. The effect of modifiers on the catalytic activity in the dehydrogenation of ethane with CO2 was investigated. The modifiers exhibited different effects on catalytic behavior. Fe, Co and Mn oxides markedly increased ethylene selectivity, but the Ni-5-Cr-10/Zr nano-composite catalyst mainly favored side reactions-the reforming and cracking reactions. The Fe-5-Cr-10/Zr nano-composite catalyst exhibited an excellent performance in this reaction, producing 50.05% ethylene yield at 53.72% ethane conversion at 650 degrees C. The modified Cr2O3/ZrO2 nanocomposite catalysts were characterized by BET, TEM, XRD, XPS, CO2-TPD and NH3-TPD techniques. The characterization indicated that weak acid sites are involved in ethane activation, and strong acid-base pairs promote the reforming and cracking reactions. The distribution of chromium species, oxygen species and base/acid property on the surface of catalyst cooperatively determined the catalytic activity in dehydrogenations of ethane to ethylene using CO2 as an oxidant. (c) 2007 Elsevier B.V. All rights reserved.
英文摘要	Cr2O3/ZrO2 nano-composite catalysts modified with Ni, Fe, Co, Mn oxides respectively were synthesized by coupling co-precipitation with azeotropic distillation method. The effect of modifiers on the catalytic activity in the dehydrogenation of ethane with CO2 was investigated. The modifiers exhibited different effects on catalytic behavior. Fe, Co and Mn oxides markedly increased ethylene selectivity, but the Ni-5-Cr-10/Zr nano-composite catalyst mainly favored side reactions-the reforming and cracking reactions. The Fe-5-Cr-10/Zr nano-composite catalyst exhibited an excellent performance in this reaction, producing 50.05% ethylene yield at 53.72% ethane conversion at 650 degrees C. The modified Cr2O3/ZrO2 nanocomposite catalysts were characterized by BET, TEM, XRD, XPS, CO2-TPD and NH3-TPD techniques. The characterization indicated that weak acid sites are involved in ethane activation, and strong acid-base pairs promote the reforming and cracking reactions. The distribution of chromium species, oxygen species and base/acid property on the surface of catalyst cooperatively determined the catalytic activity in dehydrogenations of ethane to ethylene using CO2 as an oxidant. (c) 2007 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Physical
研究领域[WOS]	Chemistry
关键词[WOS]	CHROMIUM-OXIDE CATALYSTS ; CARBON-DIOXIDE ; OXIDEHYDROGENATION ; BEHAVIORS ; ALUMINA ; REDOX ; XPS
收录类别	SCI
原文出处	://WOS:000245897100026
语种	英语
WOS记录号	WOS:000245897100026
公开日期	2013-10-15
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/3303]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Ohio State Univ, Dept Chem & Biomol Engn, Columbus, OH 43210 USA 2.Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Deng, Shuang,Li, Huiquan,Li, Songgeng,et al. Activity and characterization of modified Cr2O3/ZrO2 nano-composite catalysts for oxidative dehydrogenation of ethane to ethylene with CO2[J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,2007,268(1-2):169-175.
APA	Deng, Shuang,Li, Huiquan,Li, Songgeng,&Zhang, Yi.(2007).Activity and characterization of modified Cr2O3/ZrO2 nano-composite catalysts for oxidative dehydrogenation of ethane to ethylene with CO2.JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,268(1-2),169-175.
MLA	Deng, Shuang,et al."Activity and characterization of modified Cr2O3/ZrO2 nano-composite catalysts for oxidative dehydrogenation of ethane to ethylene with CO2".JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL 268.1-2(2007):169-175.

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