Different Supports-Supported Cr-Based Catalysts for Oxidative Dehydrogenation of Isobutane with CO2

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	Different Supports-Supported Cr-Based Catalysts for Oxidative Dehydrogenation of Isobutane with CO2
	Sun Guosong 2,3; Huang Qingze 4; Li Huiquan 1; Liu Haitao 1; Zhang Zhao 1; Wang Xingrui 1; Wang Qiuping 4; Wang Jinshu 2
刊名	CHINESE JOURNAL OF CATALYSIS
	2011-08-01
卷号	32 期号:8 页码:1424-1429
关键词	MSU-1 zeolite chromium oxide isobutane carbon dioxide catalytic dehydrogenation isobutene
ISSN号	0253-9837
其他题名	Chin. J. Catal.
中文摘要	The effect of supports (MSU-1,), gamma-Al2O3, AC (activated carbon), and MgO) on the catalytic activity of Cr-based catalysts was investigated for the dehydrogenation of isobutane with CO2. The catalytic activity was in the order of CrO,IMSU-1 > CrOx/Al2O3 > CrOx/AC > CrOx/MgO. The catalysts were characterized by N-2 adsorption-desorption, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and temperature-programmed desorption (TPD). The XRD results indicate that the active species of Cr are dispersed well on the supports. N-2 adsorption-desorption shows that the support MSU-1 has the largest surface area (804.2 m(2)/g), which results in excellent dispersion of Cr and highest activity. The XPS results reveal that Cr6+ is one of the active centers. The results of NH3-TPD indicate that catalyst activity is proportional to the amount of weak acid adsorption sites. As a result, the best support is the MSU-1 zeolite owing to its high specific area and a large amount of weak acid sites. The 59.2% conversion of isobutane and the 39.5% yield of isobutene are achieved on the CrOx/MSU-1 catalyst.
英文摘要	The effect of supports (MSU-1,), gamma-Al2O3, AC (activated carbon), and MgO) on the catalytic activity of Cr-based catalysts was investigated for the dehydrogenation of isobutane with CO2. The catalytic activity was in the order of CrO,IMSU-1 > CrOx/Al2O3 > CrOx/AC > CrOx/MgO. The catalysts were characterized by N-2 adsorption-desorption, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and temperature-programmed desorption (TPD). The XRD results indicate that the active species of Cr are dispersed well on the supports. N-2 adsorption-desorption shows that the support MSU-1 has the largest surface area (804.2 m(2)/g), which results in excellent dispersion of Cr and highest activity. The XPS results reveal that Cr6+ is one of the active centers. The results of NH3-TPD indicate that catalyst activity is proportional to the amount of weak acid adsorption sites. As a result, the best support is the MSU-1 zeolite owing to its high specific area and a large amount of weak acid sites. The 59.2% conversion of isobutane and the 39.5% yield of isobutene are achieved on the CrOx/MSU-1 catalyst.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]	Chemistry ; Engineering
关键词[WOS]	OXIDE-BASED CATALYSTS ; CARBON-DIOXIDE ; PT-SN-K/GAMMA-AL2O3 CATALYST ; PROPANE DEHYDROGENATION ; PERFORMANCE ; ETHANE ; PROPYLENE ; ETHYLENE ; SILICA
收录类别	SCI
原文出处	://WOS:000294314000019
语种	英语
WOS记录号	WOS:000294314000019
公开日期	2013-11-28
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/6303]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Chinese Acad Sci, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China 2.Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100022, Peoples R China 3.Guangxi Res Inst Chem Ind, Nanning 530001, Guangxi, Peoples R China 4.Guangxi Univ Nat, Coll Chem & Ecol Engn, Nanning 530006, Guangxi, Peoples R China
推荐引用方式 GB/T 7714	Sun Guosong,Huang Qingze,Li Huiquan,et al. Different Supports-Supported Cr-Based Catalysts for Oxidative Dehydrogenation of Isobutane with CO2[J]. CHINESE JOURNAL OF CATALYSIS,2011,32(8):1424-1429.
APA	Sun Guosong.,Huang Qingze.,Li Huiquan.,Liu Haitao.,Zhang Zhao.,...&Wang Jinshu.(2011).Different Supports-Supported Cr-Based Catalysts for Oxidative Dehydrogenation of Isobutane with CO2.CHINESE JOURNAL OF CATALYSIS,32(8),1424-1429.
MLA	Sun Guosong,et al."Different Supports-Supported Cr-Based Catalysts for Oxidative Dehydrogenation of Isobutane with CO2".CHINESE JOURNAL OF CATALYSIS 32.8(2011):1424-1429.