光催化单糖转化为高值化学品的研究进展

Research Progress in Photocatalytic Conversion of Monosaccharides to High-Value Chemicals

化石燃料的枯竭要求寻找可替代的可再生原料和利用对环境无害的方法来生产高附加值的化合物和燃料。在此背景下,生物质的高效利用已成为一个重要的研究领域,因为它产量大,来源广泛,代表了一种可替代的绿色可再生碳源。目前已经探索了多种转化技术,其中多相光催化具有反应条件温和、催化剂与产物易分离、绿色无害等优点,逐渐受到研究人员关注。利用不同的生物质组分作为原料,调整光催化剂的类型、溶剂和催化剂的物理化学特性等实验条件,获得了有价值的不同选择性的化学物质。本文主要论述了金属化合物和碳氮聚合物催化剂对单糖的光催化转化活性。本文还梳理了光催化葡萄糖和果糖生成5-羟甲基糠醛(HMF),以及进一步光催化氧化HMF的反应机理,整理了近年来光催化单糖转化为高值化学品反应的研究进展,同时对最新的一锅法转化单糖和HMF为高值化学品反应进行了展望。

The depletion of fossil fuels requires the search for alternative renewable feedstocks and the use of environmentally sound methods to produce high value-added compounds and fuels. In this context, the efficient utilisation of biomass has become an important area of research as it is highly productive, widely available and represents an alternative green renewable carbon source. Various conversion technologies have been explored, among which multiphase photocatalysis has gradually gained the attention of researchers due to its advantages of mild reaction conditions, easy separation of catalysts and products, and green and harmless nature. Using different biomass components as feedstocks and adjusting experimental conditions such as the type of photocatalyst, solvent and physicochemical properties of the catalyst, valuable chemicals with different selectivities have been obtained. This paper deals with the photocatalytic conversion activity of metal compounds and carbon and nitrogen polymer catalysts for monosaccharides. This paper also teases out the reaction mechanism of photocatalytic glucose and fructose to produce 5-hydroxy methyl furfural (HMF), and further photocatalytic oxidation of HMF, and collates the research progress in recent years on photocatalytic monosaccharides conversion to high-value chemicals reactions, as well as the outlook of the most recent one-pot method of converting monosaccharides and HMF to high-value chemicals reactions.