孙果宋1; 黄青则2; 李会泉3; 柳海涛3; 张钊3; 王兴瑞3; 王秋萍2; 王金淑1
Source Publication催化学报
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.
Document Type期刊论文
Recommended Citation
GB/T 7714
孙果宋,黄青则,李会泉,等. 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,2011,32(8):1424.
APA 孙果宋.,黄青则.,李会泉.,柳海涛.,张钊.,...&王金淑.(2011).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.催化学报,32(8),1424.
MLA 孙果宋,et al."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".催化学报 32.8(2011):1424.
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