Catalytic depolymerization of lignin by metal and metal oxide: a review

IF 3.6 4区 环境科学与生态学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY Environmental Pollutants and Bioavailability Pub Date : 2023-09-27 DOI:10.1080/26395940.2023.2263168
Yiran Zhao, Hao Li, Guoqiang Chen, Hongying Huang, Enhui Sun, Ling Chen, Cheng Yong, Hongmei Jin, Shuping Wu, Ping Qu
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Abstract

Lignin, with its rich reserves of phenolic compounds, holds great promise as a candidate for renewable energy and valuable chemical production. However, the complex molecular structure and low reactivity of lignin have impeded progress in this research direction. Consequently, the depolymerization of lignin into high-value small-molecule chemicals has become a new area of focus. Metal and metal oxides have emerged as a promising catalyst to overcome this obstacle due to their high selectivity in depolymerizing lignin and the mild reaction conditions required. This paper reviews the properties, and products of various metal and metal oxides used for lignin depolymerization under microwave, pyrolysis, hydrogenolysis, and oxidation conditions. The research prospects and challenges of metal oxide degradation of lignin are summarized to pave the way for future applications and development of lignin depolymerization.
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金属和金属氧化物催化木质素解聚研究进展
木质素具有丰富的酚类化合物储备,作为可再生能源和有价值的化学生产的候选物具有很大的前景。然而,木质素复杂的分子结构和较低的反应活性阻碍了这一研究方向的发展。因此,木质素解聚制备高价值的小分子化学物质已成为一个新的研究热点。金属和金属氧化物因其在木质素解聚过程中的高选择性和温和的反应条件而成为克服这一障碍的有希望的催化剂。本文综述了微波、热解、氢解和氧化等条件下木质素解聚的各种金属和金属氧化物的性质及其产物。综述了金属氧化物降解木质素的研究前景和面临的挑战,为木质素解聚的未来应用和发展铺平道路。
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来源期刊
Environmental Pollutants and Bioavailability
Environmental Pollutants and Bioavailability Chemical Engineering-Chemical Health and Safety
CiteScore
4.30
自引率
3.00%
发文量
47
审稿时长
13 weeks
期刊介绍: Environmental Pollutants & Bioavailability is a peer-reviewed open access forum for insights on the chemical aspects of pollutants in the environment and biota, and their impacts on the uptake of the substances by living organisms. Topics include the occurrence, distribution, transport, transformation, transfer, fate, and effects of environmental pollutants, as well as their impact on living organisms. Substances of interests include heavy metals, persistent organic pollutants, and emerging contaminants, such as engineered nanomaterials, as well as pharmaceuticals and personal-care products as pollutants.
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