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A series of research work in the field of biomass catalytic conversion by the team of Dalian Institute of Chemical Physics, Chinese Academy of Sciences, has received extensive attention from international counterparts. Recently, he was invited to publish the Catalytic Transformation of Lignin for the Production of Chemicals and Fuels in the Chemical Reviews magazine. Review article (Chem. Rev. 2015, 115, 11559−11624).
Lignin is a three-dimensional network polymer mainly composed of phenylpropane units, and its chemical properties are very stubborn. As the main component of lignocellulosic resources, lignin accounts for 15-30% of the dry weight of the plant, has a higher energy density than cellulose, and is the only renewable resource in nature that can directly provide aromatic ring monomers. The catalytic conversion of lignin into valuable aromatic chemicals and fuels has both scientific significance and application prospects.
In this review article, the structure, properties and separation methods of lignin were systematically described first. Then according to the different depolymerization strategies of lignin catalytic conversion, acid-base catalyzed depolymerization, pyrolysis, hydrogen-related conversion, oxidative depolymerization, and gasification were summarized. The latest research progress of liquid phase reforming, etc.; based on this, the lignin structure analysis new technology, the catalytic reaction mechanism and catalyst design of different depolymerization methods were summarized and compared, and the difficulties and future development of lignin catalytic conversion were proposed. trend. This review will provide useful references for the development of new lignin catalytic conversion routes and the design of more efficient and stable catalyst systems, and will also promote the development of biomass catalytic refining technologies.
The study was funded by the National Natural Science Foundation of China and the International Visiting Scholars Program of the Chinese Academy of Sciences.
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