Aqueous-Phase Hydrogenation of Succinic Acid to 纬-Butyrolactone and Tetrahydrofuran over Pd/C, Re/C, and Pd鈥揜e/C Catalysts

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• 作者：Zhengfeng Shao ; Chuang Li ; Xin Di ; Zihui Xiao ; Changhai Liang
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2014
• 出版时间：June 11, 2014
• 年：2014
• 卷：53
• 期：23
• 页码：9638-9645
• 全文大小：503K
• 年卷期：v.53,no.23(June 11, 2014)
• ISSN：1520-5045

文摘

Monometallic Pd/C and Re/C and bimetallic Pd鈥揜e/C catalysts with different Re/Pd molar ratios were prepared by incipient-wetness impregnation and characterized by temperature-programmed reduction, X-ray diffraction, CO chemisorption, and transmission electron microscopy. The results indicated that there is a strong interaction between Pd and Re species and that Pd can significantly promote the reduction of rhenium oxide. The hydrogenation of succinic acid to 纬-butyrolactone and tetrahydrofuran was investigated over the as-prepared Pd/C, Re/C, and Pd鈥揜e/C catalysts. Pd/C showed a low conversion of succinic acid and a high selectivity to 纬-butyrolactone. Adding a small amount of Re evidently enhanced the hydrogenation activity of succinic acid and improved the yield of 纬-butyrolactone, whereas more Re increased the yield of tetrahydrofuran. The main reaction pathway for the conversion of succinic acid in aqueous solution on Pd鈥揜e/C catalysts is proposed through hydrogenation of the intermediates, including 纬-butyrolactone, 1,4-butanediol, and tetrahydrofuran as the substrates.