Dehydrogenation of Propane to Propene over Ga2O3/HZSM-5 Catalysts

Chem. J. Chinese Universities ›› 2009, Vol. 30 ›› Issue (6): 1162.

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Dehydrogenation of Propane to Propene over Ga₂O₃/HZSM-5 Catalysts

REN Ying-Jie, HUA Wei-Ming, YUE Ying-Hong*, GAO Zi

Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China

Received:2009-01-07 Online:2009-06-10 Published:2009-06-10
Contact: YUE Ying-Hong, E-mail: yhyue@fudan.edu.cn
Supported by:
国家自然科学基金(批准号: 20633030, 20773027和20773028)、国家“九七三”计划项目(批准号: 2006CB806103)和上海市科学技术委员会(批准号: 08DZ2270500)资助.

Abstract

Abstract:

Dehydrogenation of propane to propene in the presence of CO₂ was carried out over Ga₂O₃ catalysts supported on HZSM-5 with different Si/Al molar ratios. The structural and acidic properties were characterized by XRD, XRF, N₂ adsorption, ²⁷Al MAS NMR, NH₃-TPD and model acid-catalyzed reaction. It is found that the stability of supported Ga₂O₃ catalysts for the reaction improves with increasing Si/Al molar ratio of HZSM-5 support, which is thought to be caused by the decrease of the acidity of the catalysts, resulting in the suppression of the side reactions. The stability can also be enhanced by the mesopores generated by steaming, due to the promotion of the diffusion and desorption of the propene.

Key words: Ga₂O₃/HZSM-5, Propane, Dehydrogenation, Carbon dioxide, Stability

TrendMD:

REN Ying-Jie, HUA Wei-Ming, YUE Ying-Hong*, GAO Zi. Dehydrogenation of Propane to Propene over Ga₂O₃/HZSM-5 Catalysts[J]. Chem. J. Chinese Universities, 2009, 30(6): 1162.

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Dehydrogenation of Propane to Propene over Ga₂O₃/HZSM-5 Catalysts

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