Effect of air addition on the catalytic performance of Pt-Sn/Al2O3 catalysts in propane dehydrogenation

3rd International Conference on New Material and Chemical Industry

材料科学;化学工业

Ma, Z.H.^1 ; Wang, J.^2 ; Li, S.^1 ; Jiang, A.J.^1 ; Li, J.^1 ; An, C.H.^3 ; Sun, L.Y.^1

State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum, Qingdao, Shandong

266580, China^1

Xinjiang Petroleum Engineering CO., Ltd, Karamay, Xinjiang

834000, China^2

Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, College of Chemistry and Chemical Engineering, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin

300384, China^3

关键词: Al2O3-supported Pt;    Catalytic performance;    Impregnation-reduction method;    Operating condition;    Propane dehydrogenation;    Propene selectivity;    Reaction conversion;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/479/1/012069/pdf
DOI  :  10.1088/1757-899X/479/1/012069

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The Al2O3-supported Pt-Sn catalysts were prepared utilizing an impregnation-reduction method and applied in the propane dehydrogenation in the presence of air. The addition of air, it not only provides a part of the heat required by dehydrogenation, but also improves the reaction conversion through the consumption of H2 to H2O. Moreover, the operating conditions of the dehydrogenation process with air have been investigated. The reasonable operating conditions are recommended as follows: temperature=590 °C, GHSV=5200 h-1, and C3H8: air: H2=4:5:4 (molar ratio). Under these conditions, the propane conversion and the propene selectivity attain 39.6% and 96.7%, respectively, simultaneously with the stable catalytic activity.