| 不同载体负载的Cr基催化剂催化CO2氧化异丁烷脱氢制异丁烯 |
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| 引用本文： | 孙果宋,黄青则,李会泉,柳海涛,张钊,王兴瑞,王秋萍,王金淑.不同载体负载的Cr基催化剂催化CO2氧化异丁烷脱氢制异丁烯[J].催化学报,2011(8):1424-1429. |
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| 作者姓名： | 孙果宋 黄青则 李会泉 柳海涛 张钊 王兴瑞 王秋萍 王金淑 |
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| 作者单位： | 北京工业大学材料科学与工程学院;广西壮族自治区化工研究院;广西民族大学化学与生态工程学院;中国科学院过程工程研究所绿色过程与工程院重点实验室 |
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| 基金项目： | 国家自然科学基金(21006109);中国科学院知识创新方向性项目课题(KGCX2-YW-215-2);广西生物炼制重点实验室基金(10-046-06)~~ |
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| 摘 要： | 制备了介孔分子筛MSU-1,γ-A12O3,AC(活性炭)和MgO负载的CrOx催化剂,并考察了其催化CO2氧化异丁烷脱氢制异丁烯反应性能.结果表明,各催化剂活性的顺序为:CrOx/MSU-1 ＞CrOx/A12O3＞ CrOx/AC＞ CrOJMgO.其中在CrOx/MSU-1催化剂上,异丁烷的转化率和异丁烯的收率分...
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| 关 键 词： | MSU-1分子筛 铬氧化物 异丁烷 二氧化碳 催化脱氢 异丁烯 |
Different Supports-Supported Cr-Based Catalysts for Oxidative Dehydrogenation of Isobutane with CO2 |
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| SUN Guosong,HUANG Qingze,LI Huiquan,a,LIU Haitao,b,ZHANG Zhao,WANG Xingrui,WANG Qiuping,WANG Jinshu.Different Supports-Supported Cr-Based Catalysts for Oxidative Dehydrogenation of Isobutane with CO2[J].Chinese Journal of Catalysis,2011(8):1424-1429. |
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| Authors: | SUN Guosong HUANG Qingze LI Huiquan a LIU Haitao b ZHANG Zhao WANG Xingrui WANG Qiuping WANG Jinshu |
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| Institution: | 1College of Materials Science and Engineering,Beijing University of Technology,Beijing 100022,China 2Guangxi Research Institute of Chemical Industry,Nanning 530001,Guangxi,China 3College of Chemistry and Ecology Engineering,Guangxi University for Nationalities,Nanning 530006,Guangxi,China 4Key Laboratory for Green Process and Engineering,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China |
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| Abstract: | The effect of supports(MSU-1,γ-Al2O3,AC(activated carbon),and MgO)on the catalytic activity of Cr-based catalysts was in-vestigated for the dehydrogenation of isobutane with CO2.The catalytic activity was in the order of CrOx/MSU-1 > CrOx/Al2O3> CrOx/AC > CrOx/MgO.The catalysts were characterized by N2 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.N2 adsorption-desorption shows that the support MSU-1 has the largest surface area(804.2 m2/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 spe-cific 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. |
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| Keywords: | MSU-1 zeolite chromium oxide isobutane carbon dioxide catalytic dehydrogenation isobutene |
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