葡萄糖化学催化异构制备果糖研究进展

发布时间：2018-06-27 14:16

本文选题：葡萄糖 + 果糖　；参考：《化工进展》2017年12期

【摘要】：生物质是自然界中唯一含有固定碳的可再生资源,因此其被认为是替代化石资源制备五羟甲基糠醛、乙酰丙酸等高附加值生物化学品的最佳原料。而生物质炼制过程中葡萄糖异构制备果糖的反应是实现上述过程的非常关键的步骤。此外,葡萄糖的异构也是食品科学中的重要过程。基于上述背景,本文综述了近年来葡萄糖化学催化异构制备果糖过程催化剂研究进展,重点介绍了Br?nsted碱、固体碱、金属盐以及分子筛等传统酸碱催化剂以及金属有机骨架和离子液体等新型催化材料在此过程中的催化行为。此外,还对葡萄糖异构的酸催化机理和碱催化机理进行了简要介绍,对其研究方法进行了总结。针对当前葡萄糖化学催化异构过程中存在的诸如催化剂水热稳定性差、过程效率低、果糖选择性低等技术难题,提出设计新型水热稳定催化剂以及基于化工过程强化的理念,构建葡萄糖催化异构与产物原位分离相耦合的新体系等可能的解决措施。与此同时,高效、高选择性的新型催化材料和催化体系的开发、系列对葡萄糖异构具强化作用的新型绿色过程的构筑以及多手段联合(例如原位技术、二维核磁和计算机模拟相结合)的现代分析方法在葡萄糖化学催化异构机理研究方面的应用将会受到越来越多的关注。
[Abstract]:Biomass is the only renewable resource with fixed carbon in nature, so it is considered to be the best raw material for the preparation of high value-added biological chemicals such as penta-hydroxymethylfurfural and levulinic acid instead of fossil resources. The reaction of glucose isomerization to fructose is a key step in the process of biomass refining. In addition, glucose isomerization is also an important process in food science. Based on the above background, the recent advances in catalysts for the preparation of fructose by glucose chemical catalysis were reviewed, with emphasis on Brnsted bases and solid bases. The catalytic behavior of traditional acid-base catalysts, such as metal salts and molecular sieves, as well as novel catalysts such as metal organic frameworks and ionic liquids. In addition, the acid catalysis mechanism and alkali catalysis mechanism of glucose isomerization were briefly introduced, and their research methods were summarized. Aiming at the technical problems such as poor hydrothermal stability of catalyst, low efficiency of process and low selectivity of fructose in the process of glucose chemical catalytic isomerization, the idea of designing new hydrothermal stable catalyst and strengthening chemical process is put forward. To construct a new system of glucose-catalyzed isomerization coupled with in situ separation of products, and other possible solutions. At the same time, the development of highly efficient and highly selective novel catalytic materials and catalytic systems, the construction of a series of novel green processes that enhance glucose isomerization, and the combination of multiple means (e.g. in situ technology, The application of the modern analytical method in the study of the mechanism of glucose chemical catalytic isomerization will be paid more and more attention.
【作者单位】：华南理工大学化学与化工学院;广东省新能源和可再生能源研究开发与应用重点实验室;
【基金】：国家自然科学基金重点项目(21336002) 广东省新能源和可再生能源研究开发与应用重点实验室基金项目(Y607s51001)
【分类号】：O629.11

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