Influence of the Competitive Adsorbates on the Catalytic Properties of PtSnNaMg/ZSM-5 Catalysts for Propane Dehydrogenation

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• 作者：Linyang Bai ; Yuming Zhou ; Yiwei Zhang ; Hui Liu ; Xiaoli Sheng ; Mengwei Xue
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2011
• 出版时间：April 20, 2011
• 年：2011
• 卷：50
• 期：8
• 页码：4345-4350
• 全文大小：825K
• 年卷期：v.50,no.8(April 20, 2011)
• ISSN：1520-5045

文摘

This paper is aimed at studying the influence of the competitive adsorbates (HCl, lactic acid, and citric acid) on the structural and catalytic properties of PtSnNaMg/ZSM-5 catalysts for propane dehydrogenation. N₂ adsorption, X-ray diffraction, inductively coupled plasma, NH₃ temperature-programmed desorption, H₂ temperature-programmed reduction and transmission electron microscopy were applied for characterization of the prepared catalysts. The catalytic performance was tested in a microreactor. The obtained results indicate that the catalyst prepared in HCl medium exhibited the best catalytic activity and stability due to relatively better metal distribution on the support and/or the strong interactions between Pt and Sn as well as between them and the support.