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Citation: MA Hong-Chao, FU Ying-Huan, WANG Zhen-Lü, ZHU Wan-Chun, WU Tong-Hao, WANG Guo-Jia. Catalytic Behavior of V₂O₅/γ-Al₂O₃ and V₂O₅/SiO₂ in Dehydrogenation of Isobutane to Isobutene[J]. Chinese Journal of Applied Chemistry, ;2004, 21(12): 1221-1224. shu

Catalytic Behavior of V₂O₅/γ-Al₂O₃ and V₂O₅/SiO₂ in Dehydrogenation of Isobutane to Isobutene

1.
Department of Chemistry, Jilin University, Changchun 130023

Corresponding author: WANG Guo-Jia,
Received Date: 18 January 2004
Available Online: 20 June 2004
Fund Project: 国家自然基金资助项目(29873019) (29873019)

V₂O₅/γ-Al₂O₃ and V₂O₅/SiO₂ catalysts were prepared by the impregnation method and characte-rized by H₂-TPR, NH₃-TPD and ESR. Their catalytic activities were compared in the dehydrogenation of isobutane to isobutene at 580℃. The results show that V₂O₅/γ-Al₂O₃ exhibits higher activity than V₂O₅/SiO₂, resulting in 35.4% conversion rate, which is correlated with that vanadium oxide is better dispersed and more easily reduced on γ-Al₂O₃(reduction temperature 542℃) than on SiO₂, whereas V₂O₅/SiO₂ exhibits higher selectivity of isobutene higher than V₂O₅/γ-Al₂O₃ due to weaker acidity of the SiO₂ surface than that of the γ-Al₂O₃ surface.
- V₂O₅/γ-Al₂O₃,
- V₂O₅/SiO₂,
- isobutane,
- dehydrogenation
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沈阳化工大学材料科学与工程学院沈阳 110142

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Catalytic Behavior of V2O5/γ-Al2O3 and V2O5/SiO2 in Dehydrogenation of Isobutane to Isobutene

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通讯作者: 陈斌, bchen63@163.com

Catalytic Behavior of V₂O₅/γ-Al₂O₃ and V₂O₅/SiO₂ in Dehydrogenation of Isobutane to Isobutene