Catalytic transformations of cellulose and cellulose-derived carbohydrates into organic acids
Catalytic transformations of cellulose and cellulose-derived carbohydrates into organic acids
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纤维素和纤维素衍生的碳水化合物催化转化为有机酸
DOI：
10.1016/j.cattod.2013.12.041
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发表时间：
2014-10-01
期刊：
影响因子：
5.3
通讯作者：
Wang, Ye
中科院分区：
文献类型：
--
作者：
Deng, Weiping;Zhang, Qinghong;Wang, Ye
从建立可持续发展社会的角度来看，有效利用木质纤维素生物质生产化学品和燃料具有重要意义。在温和条件下将木质纤维素生物质的主要成分纤维素选择性转化为平台化学品是一条很有前途的路线，该平台化学品可以在后续步骤中容易地转化为各种化学品或燃料。乙酰丙酸、乳酸、葡萄糖酸、甲酸等有机酸是重要的平台化学品，近年来碳水化合物向有机酸的转化备受关注。本简短的评论文章强调了最近的研究进展，在开发新的路线生产有机酸从纤维素或纤维素衍生碳水化合物。特别是，我们将证明，双功能催化剂耦合的酸位点的糖苷键通过水解和金属纳米粒子的葡萄糖中间体的氧化的活化显示出有前途的性能，在O-2的存在下，在水中的纤维素转化为葡萄糖酸。结合异构化和脱水-再水化或逆羟醛裂解能力的多功能催化剂或催化体系可以在厌氧条件下由纤维素提供乙酰丙酸或乳酸。还将讨论每种情况下的反应机理，以深入了解纤维素或葡萄糖中的C-C或C-O键是如何活化和裂解的，以及催化剂在这些步骤中的作用。(C)2014爱思唯尔有限公司版权所有。
The efficient utilization of lignocellulosic biomass for the production of chemicals and fuels is of high significance from the viewpoint of establishing sustainable society. The selective transformation of cellulose, the main component of lignocellulosic biomass, into platform chemicals, which can be easily converted to various chemicals or fuels in the subsequent step, under mild conditions is a promising route. Organic acids such as levulinic acid, lactic acid, gluconic acid, and formic acid are important platform chemicals, and the conversion of carbohydrates into organic acids has attracted much attention in recent years. The present short review article highlights recent research progress in the development of new routes for the production of organic acids from cellulose or cellulose-derived carbohydrates. In particular, we will demonstrate that the bifunctional catalysts coupling the acid sites for the activation of the glycosidic bonds via hydrolysis and the metal nanoparticles for the oxidation of glucose intermediate show promising performances for the conversion of cellulose into gluconic acid in water in the presence of O-2. The multifunctional catalysts or catalytic systems combining the abilities of isomerization and dehydration-rehydration or retro-aldol fragmentation can provide levulinic acid or lactic acid from cellulose under anaerobic conditions. The reaction mechanism in each case will also be discussed to gain insights into how the C-C or C-O bonds in cellulose or glucose are activated and cleaved and the roles of catalysts in these steps. (C) 2014 Elsevier B.V. All rights reserved.