CIESC Journal ›› 2021, Vol. 72 ›› Issue (6): 3228-3238.DOI: 10.11949/0438-1157.20201579

• Reviews and monographs • Previous Articles     Next Articles

Research progress on lignocellulose liquefaction in polyhydric alcohol and upgrading of liquefaction product

GUO Haijun1,2,3,4(),ZHANG Hairong1,2,3,4,DING Shuai1,2,3,4,5,LI Hailong1,2,3,4,PENG Fen1,2,3,4,XIONG Lian1,2,3,4,CHEN Xinde1,2,3,4()   

  1. 1.Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China
    2.Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China
    3.Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, Guangdong, China
    4.R&D Center of Xuyi Attapulgite Energy and Environmental Materials, Xuyi 211700, Jiangsu, China
    5.Nano Science and Technology Institute, University of Science and Technology of China, Suzhou 215123, Jiangsu, China.
  • Received:2020-11-03 Revised:2020-12-02 Online:2021-06-05 Published:2021-06-05
  • Contact: CHEN Xinde

木质纤维素多元醇液化及液化产物提质的研究进展

郭海军1,2,3,4(),张海荣1,2,3,4,丁帅1,2,3,4,5,黎海龙1,2,3,4,彭芬1,2,3,4,熊莲1,2,3,4,陈新德1,2,3,4()   

  1. 1.中国科学院广州能源研究所,广东 广州 510640
    2.中国科学院可再生能源重点实验室,广东 广州 510640
    3.广东省新能源和可再生能源研究开发与应用重点实验室,广东 广州 510640
    4.盱眙凹土能源环保材料研发中心,江苏 盱眙 211700
    5.中国科学技术大学纳米科学技术学院,江苏 苏州 215123
  • 通讯作者: 陈新德
  • 作者简介:郭海军(1986—),男,博士,副研究员,guohj@ms.giec.ac.cn
  • 基金资助:
    广东省自然科学基金项目(2018A030313150);江苏省科技计划项目(BE2018342);国家自然科学基金项目(51876207);广东省基础与应用基础研究基金项目(2020A1515010516);中国科学院可再生能源重点实验室基金项目(E151010301)

Abstract:

As the sole renewable carbon-containing resource, biomass can be converted into fuels and chemicals with high added value through thermochemical liquefaction. The lignocellulosic polyol liquefaction products with adjustable hydroxyl value and viscosity are abundant of active hydroxyl groups and have been extensively applied in polyurethane production. Due to the side reactions such as condensation and rearrangement during liquefaction, carbonyl compounds such as aldehydes, ketones, acids and esters are present in liquefaction products. The hydrogenation upgrading of liquefaction products over suitable catalyst is the necessary step to improve the quality of downstream polyurethane foam. In this paper, the technology, kinetics and mechanism of lignocellulosic polyol liquefaction were summarized. The selection of upgrading method and process technology of liquefaction products were elaborated. The new technology of “liquefaction coupling upgrading” was proposed, and the feasible suggestions for the future research focus and development trend were put forward.

Key words: biomass, liquefaction, carbonyl compounds, upgrading, hydrogenation, catalyst

摘要:

生物质作为唯一的可再生含碳资源,通过热化学液化可以实现其高附加值转化为燃料和化学品。木质纤维素多元醇液化产物富含活性羟基,具有可调变的羟值和黏度,在聚氨酯材料的生产中得到了广泛的应用。由于液化过程中同时存在缩聚、重排等副反应的发生,导致液化产物中含有醛、酮、酸、酯等羰基化合物,使用合适的催化剂对液化产物进行加氢提质是提高下游聚氨酯泡沫品质的必需步骤。为此,对木质纤维素多元醇液化工艺、液化动力学和液化机理等方面进行了总结,对液化产物的提质方法及工艺技术的选取进行了阐述,提出了“液化耦合提质”的新工艺,并对未来的研究重点及发展趋势提出了可行的建议。

关键词: 生物质, 液化, 羰基化合物, 提质, 加氢, 催化剂

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