木质素的催化加氢转化

发布时间：2018-10-26 19:24

【摘要】：木质素是来源于木质纤维素的一种重要的可再生生物质资源,可用于制备化学品和燃料。由于木质素本身结构的复杂性和稳定性使其难以有效利用。目前大量的制浆和造纸工业的木质素没有得到有效利用,大部分用于燃烧供能,并且造成了一定程度的环境污染。为了保护环境、实现可持续发展,催化转化木质素制备高附加值化学品成为了研究的热点。木质素转化的研究众多,但是进展依然相对缓慢。目前主要的转化方法包括碱催化解聚、酸催化解聚、热化学转化、加氢处理解聚、氧化解聚等。由于加氢处理解聚木质素可以获得低聚木质素、酚类等有价值的化学品和制备烃类燃料,是目前研究的热点和最有效的方法之一。但是,催化剂失活和解聚产物产率不高等依然是需要进一步解决的问题。基于此,梳理了近年来木质素加氢处理主要的催化体系和相关结果,提出了尚待解决的问题,以期为今后建立有效的木质素解聚体系并实现其高值化利用的相关研究提供参考。
[Abstract]:Lignin is an important renewable biomass resource derived from lignocellulose, which can be used to prepare chemicals and fuels. Because of the complexity and stability of lignin structure, it is difficult to utilize lignin effectively. At present, a large number of pulp and paper industry lignin has not been effectively used, most of it is used for burning energy, and has caused a certain degree of environmental pollution. In order to protect the environment and realize sustainable development, catalytic conversion of lignin to produce high value-added chemicals has become a hot research topic. There are many studies on lignin conversion, but the progress is still relatively slow. At present, the main conversion methods include alkali catalytic depolymerization, acid catalytic depolymerization, thermochemical transformation, hydrotreating depolymerization, oxidation depolymerization and so on. Hydrotreating depolymerized lignin is one of the most effective methods to obtain the valuable chemicals such as lignin, phenols and hydrocarbon fuel. However, deactivation of catalyst and low yield of depolymerization products are still problems to be solved. Based on this, the main catalytic systems and related results of lignin hydrotreating in recent years were reviewed, and the problems to be solved were put forward in order to provide references for the study on the establishment of effective lignin depolymerization system and the realization of its high value utilization in the future.
【作者单位】：能源材料化学协同创新中心中国科学技术大学化学系中科院城市污染物转化重点实验室;
【基金】：国家自然科学基金项目(21572213) 国家重点基础研究发展计划项目(2012CB215306)~~
【分类号】：O643.36

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