Citation: Wang Guangjian, Sun Xingyuan, Niu Xinshan, Wan Fang. Effects of Hydrothermal Treatment on Pore Structure of Aluminium-Based Carriers and the Performance of CrO_x/Al₂O₃ Catalyst for Isobutane Dehydrogenation[J]. Chemistry, ;2017, 80(2): 208-211, 215. shu

Effects of Hydrothermal Treatment on Pore Structure of Aluminium-Based Carriers and the Performance of CrO_x/Al₂O₃ Catalyst for Isobutane Dehydrogenation

College of Chemical Engineering, Qingdao University of Science and Technology, Qindao 266042

Received Date: 4 July 2016
Accepted Date: 18 September 2016

Figures(6)

γ-Al₂O₃ carriers were modified by hydrothermal treatment with two hydrothermal solvents and applied in catalytic isobutane dehydrogenation, the effect of hydrothermal treatment temperature on physicochemical properties of alumina carriers as well as the influence of hydrothermal modification on catalyst's dehydrogenation performance were studied. The modified γ-Al₂O₃ carriers were characterized by XRD, N₂ adsorption-desorption and H₂-TPR. The results showed that the crystallinity of γ-Al₂O₃ was increased after hydration and calcination process. And hydrothermal treatment enhanced the interaction between active component and carriers, and improved the performance of CrO_x/Al₂O₃. Through hydrothermal treatment with salt solution, the CrO_x/Al₂O₃ catalyst exhibited the optimal isobutane dehydrogenation performance when supports were treated at 140℃ for 4 h, average isobutane dehydrogenation conversion, average selectivity and deactivation ratio for reaction 10 h were 43.04%, 86.34% and 13.7%, respectively.
- Hydrothermal treatment,
- Hydrothermal solvents,
- CrO_x/Al₂O₃ catalyst,
- Isobutane dehydrogenation
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Effects of Hydrothermal Treatment on Pore Structure of Aluminium-Based Carriers and the Performance of CrOx/Al2O3 Catalyst for Isobutane Dehydrogenation

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通讯作者: 陈斌, bchen63@163.com

Effects of Hydrothermal Treatment on Pore Structure of Aluminium-Based Carriers and the Performance of CrO_x/Al₂O₃ Catalyst for Isobutane Dehydrogenation