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Different Supports-Supported Cr-Based Catalysts for Oxidative Dehydrogenation of Isobutane with CO2
Alternative TitleChin. J. Catal.
Sun Guosong2,3; Huang Qingze4; Li Huiquan1; Liu Haitao1; Zhang Zhao1; Wang Xingrui1; Wang Qiuping4; Wang Jinshu2
2011-08-01
Source PublicationCHINESE JOURNAL OF CATALYSIS
ISSN0253-9837
Volume32Issue:8Pages:1424-1429
AbstractThe 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.; 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.
KeywordMsu-1 Zeolite Chromium Oxide Isobutane Carbon Dioxide Catalytic Dehydrogenation Isobutene
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.3724/SP.J.1088.2011.10236
URL查看原文
Indexed BySCI
Language英语
WOS KeywordOXIDE-BASED CATALYSTS ; CARBON-DIOXIDE ; PT-SN-K/GAMMA-AL2O3 CATALYST ; PROPANE DEHYDROGENATION ; PERFORMANCE ; ETHANE ; PROPYLENE ; ETHYLENE ; SILICA
WOS Research AreaChemistry ; Engineering
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
WOS IDWOS:000294314000019
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6303
Collection研究所(批量导入)
Affiliation1.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
Recommended Citation
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.
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