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Direct chemical conversion of xylan into furfural over sulfonated graphene oxide
Catalysis Today ( IF 5.2 ) Pub Date : 2018-07-09 , DOI: 10.1016/j.cattod.2018.07.002
Pravin P. Upare , Do-Young Hong , Jaesung Kwak , Maeum Lee , Sachin K. Chitale , Jong-San Chang , Dong Won Hwang , Young Kyu Hwang

Graphene oxide (GO) grafted with –SO3H group giving a Brønsted acidic function was successfully applied for selective conversion of xylan to furfural (FA), which can be utilized as a platform chemical for a variety of value-added derivatives. The sulfonated graphene oxide (GO–SO3H) was, for the first time, found to be superior for the selective production of FA with 86% yield from xylan in water as a green solvent. GO–SO3H was successfully recycled after the reaction, and retained its catalytic activity without significant reduction. It is noteworthy that the Brønsted acid site acts as a key role in the production of furfural from xylan. Additionally, the presence of oxy-functional groups not only strengthen grafting of –SO3H with GO which probably prevented leaching into the reaction medium, but also helps to enhance the sorption capacity of substrate on GO-SO3H.



中文翻译:

磺化氧化石墨烯将木聚糖直接化学转化为糠醛

带有–SO 3 H基团的布朗斯台德酸性官能团接枝的氧化石墨烯(GO)成功地用于木聚糖选择性转化为糠醛(FA),可用作多种增值衍生物的平台化学品。首次发现磺化氧化石墨烯(GO-SO 3 H)在选择性生产FA方面表现优异,木聚糖在绿色溶剂中的产率为86%。反应后,GO-SO 3 H成功地回收利用,并保持了其催化活性,而没有明显的还原。值得注意的是,布朗斯台德酸位点在木聚糖生产糠醛中起关键作用。此外,氧官能团的存在不仅增强了–SO 3的接枝带有GO的H可能阻止了向反应介质中的浸出,但也有助于提高底物在GO-SO 3 H上的吸附能力。

更新日期:2018-07-09
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