Mechanochemical Synthesis of Sulfonated Palygorskite Solid Acid Catalysts for Selective Catalytic Conversion of Xylose to Furfural

文献类型： 外文期刊

第一作者： Qi, Xinhua

作者： Qi, Xinhua;Qi, Xinhua;Wang, Ruoqing;Liang, Xuefeng;Shen, Feng;Qiu, Mo;Yang, Jirui

作者机构：

关键词： biomass; lignocellulose; solid acid; mechanochemical; biorefinery; xylan

期刊名称：ACS SUSTAINABLE CHEMISTRY & ENGINEERING （ 影响因子：8.198； 五年影响因子：8.471 ）

ISSN： 2168-0485

年卷期： 2020 年 8 卷 2 期

页码：

收录情况： SCI

摘要： A green, safe, and easy-operation method for the preparation of sulfonated palygorskite solid acid catalyst (PAL-SO3H) was developed by a mechanochemical process, where thiol groups (-SH) were grafted onto natural palygorskite by a high-speed shearing process with 3-mercaptopropyltrimethoxysilane in aqueous solution under mild conditions, followed by the oxidation of -SH to -SO3H groups. The as-prepared PAL-SO3H catalyst was applied in the catalytic conversion of biomass-derived xylose into furfural, and it showed excellent catalytic activity, and as high as 87% of furfural yield with 96% selectivity was achieved at 180 degrees C in 60 min reaction time in the gamma-valerolactone-water mixture (95:5 v/v %). The PAL-SO3H catalyst was tolerant of high initial xylose loading concentration up to 120 g/L and exhibited good recyclability. This study provides a green and mild process for the synthesis of a sulfonated solid acid catalyst, which should have potential applications in many fields such as catalysis and adsorption.

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