陈梅, 李国峰, 孙昱东. 浸渍法制备Pt-Sn/γ-Al2O3催化剂及其催化性能 [J]. 工业催化, 2020,28(1): 32-35.
Chen Mei, Li Guofeng, Sun Yudong. Preparation of Pt-Sn/γ-Al2O3catalyst by impregnation method and its catalytic performance [J]. Industrial Catalysis, 2020,28(1): 32-35.
Preparation of Pt-Sn/γ-Al2O3catalyst by impregnation method and its catalytic performance
Chen Mei, Li Guofeng*, Sun Yudong
Department of Petro and chemical engineering,Xinjiang Career Technical College,Kuitun 833200,Xinjiang,China
Abstract
In this paper,Pt-Sn/γ-Al2O3 catalysts were prepared by co-impregnation and sequential impregnation methods,and tested in a fixed-bed reactor for the hydrogenation of n-butane.The results showed that the catalyst prepared by sequential impregnation method had higher catalytic activity than that prepared by co-impregnation method.At the same time,when the catalyst was prepared by equal volume impregnation method,competitive adsorption between the active components and the support happened,which would affect the dispersion of the active metal components on the surface of the support,and then affect the activity of the catalysts.
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The series of catalysts for dehydrogention of n-butane to 1-butene, including oxidative dehydrogenation with Vanadium-based 、molybdates、metal pyrphosphates catalysts and catalytic dehydrogenation with Pt-based catalysts and ZSM-5 zeolite, are reviewed, the membrane reactor with catalysts is also discussed . The paper reviews the kinetics for butane dehydrogenation and summerizes the reaction mechanism of n-butane oxydehydrogenation and direct dehydrogenation based on Mars-van Krevlen and Eley-Rideal kinetics and discusses the factors of catalysts simply. It also compares the characteristics between several catalysts and prospects them. Finally, The paper points out that the catalyst of ZSM-5 zeolite will likely be the reserch hotspot for n-butane dehydrogenation to 1-butene.
Key Laboratory of Oil&Gas Fine Chemicals, Ministry of Education,Xinjiang University, Urumqi 830046, China