Citation: ZHAO Xin, HE Feng, XIONG Guo, LI Gong-hua, WANG Wei-yan, LI Wen-song, YANG Yun-quan. Preparation of supported Pt/CeO₂-Al₂O₃ catalyst and its performance in the dehydrogenation of methylcyclohexane[J]. Journal of Fuel Chemistry and Technology, ;2016, 44(6): 718-725. shu

Preparation of supported Pt/CeO₂-Al₂O₃ catalyst and its performance in the dehydrogenation of methylcyclohexane

ZHAO Xin ¹ ,
HE Feng ² ,
XIONG Guo ² ,
LI Gong-hua ¹ ,
WANG Wei-yan ¹ ,
LI Wen-song ¹ ,
YANG Yun-quan ^1,*,,

1.
School of Chemical Engineering, Xiangtan University, Xiangtan 411105, China
2.
Department of Energy Conservation and Environmental Protection, Xiangtan Iron and Steel Co., LTD. of Hunan Valin, Xiangtan 411101, China

Corresponding author: YANG Yun-quan, yangyunquan@xtu.edu.cn
Received Date: 15 December 2015
Revised Date: 13 March 2016

Figures(11)

Composite CeO₂-Al₂O₃ oxides with high surface area, large pore volume and large pore diameter were prepared by ultrasonic co-precipitation; with CeO₂-Al₂O₃ as the support, Pt/CeO₂-Al₂O₃ catalysts were obtained by impregnation method. The supporter and the as-prepared Pt/CeO₂-Al₂O₃ catalysts were characterized by XRD, NH₃-TPD, nitrogen sorption and SEM; their catalytic performance in the dehydrogenation of methylcyclohexane as a model compound was investigated in a micro tube-reactor and the influences of Ce/Al (mol ratio) and reaction temperature on the dehydrogenation activity were considered. The results indicate that the Pt/CeO₂-Al₂O₃ catalyst with a Ce/Al (mol ratio) of 0.5 performs best at 450℃ in the dehydrogenation of methylcyclohexane, with a methylcyclohexane conversion of 88.53% and a selectivity of 94.63% to toluene.
- hydrogen carrier,
- dehydrogenation,
- CeO₂-Al₂O₃ composite support,
- impregnation,
- methylcyclohexane
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Preparation of supported Pt/CeO₂-Al₂O₃ catalyst and its performance in the dehydrogenation of methylcyclohexane