Effect of Ce addition on the surface properties and n-dodecane dehydrogenation performance of Pt-Sn/Ce-Al2O3 catalyst

被引：0
|
作者：
Xianru Li
Songbo He
Huangzhao Wei
Sha Luo
Bin Gu
Chenglin Sun
机构：
[1] Chinese Academy of Sciences,Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics
[2] Graduate University of Chinese Academy of Sciences,School of Chemical Engineering
[3] Dalian University of Technology,undefined
来源：
Russian Journal of Physical Chemistry A | 2015年 / 89卷
关键词：
Ce addition; alumina; acidity; Pt-Sn catalyst; -dodecane; dehydrogenation;
D O I：
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中图分类号：
学科分类号：
摘要：
Ce-modified alumina carriers with different Ce content were prepared by vacuum isovolume impregnation method aiming to improve the n-dodecane catalytic dehydrogenation performance of PtSn/Al2O3 catalyst. The support and catalyst were characterized by XRD, N2 adsorption-desorption, NH3-TPD, H2-TPR, CO-pulse adsorption and TG-DTG. Results showed that Ce addition decreased the surface acid amount significantly and inhibited the reduction of SnOx species. Besides, Ce containing catalyst showed higher n-dodecane dehydrogenation activity and stability and lower coke deposition amount and coke burning temperature. In our study, the optimal Ce addition amount for n-dodecane dehydrogenation was 2%.
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页码：1368 / 1373
页数：5
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