Hydrodeoxygenation of p-Cresol over Pt/Al2O3 Catalyst Promoted by ZrO2, CeO2, and CeO2–ZrO2

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• 作者：Weiyan Wang ; Kui Wu ; Pengli Liu ; Lu Li ; Yunquan Yang ; Yong Wang
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2016
• 出版时间：July 20, 2016
• 年：2016
• 卷：55
• 期：28
• 页码：7598-7603
• 全文大小：455K
• 年卷期：0
• ISSN：1520-5045

文摘

ZrO₂–Al₂O₃ and CeO₂–Al₂O₃ were prepared by a co-precipitation method and selected as supports for Pt catalysts. The effects of CeO₂ and ZrO₂ on the surface area and Brønsted acidity of Pt/Al₂O₃ were studied. In the hydrodeoxygenation (HDO) of p-cresol, the addition of ZrO₂ promoted the direct deoxygenation activity on Pt/ZrO₂–Al₂O₃ via C_aromatic–O bond scission without benzene ring saturation. Pt/CeO₂–Al₂O₃ exhibited higher deoxygenation extent than Pt/Al₂O₃ due to the fact that Brønsted acid sites on the catalyst surface favored the adsorption of p-cresol. With the advantages of CeO₂ and ZrO₂ taken into consideration, CeO₂–ZrO₂–Al₂O₃ was prepared, leading to the highest HDO activity of Pt/CeO₂–ZrO₂–Al₂O₃. The deoxygenation extent for Pt/CeO₂–ZrO₂–Al₂O₃ was 48.4% and 14.5% higher than that for Pt/ZrO₂–Al₂O₃ and Pt/CeO₂–Al₂O₃, respectively.