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A review on the catalytic hydrodeoxygenation of lignin-derived phenolic compounds and the conversion of raw lignin to hydrocarbon liquid fuels
Biomass & Bioenergy ( IF 6 ) Pub Date : 2019-11-29 , DOI: 10.1016/j.biombioe.2019.105432
Riyang Shu , Rongxuan Li , Biqin Lin , Chao Wang , Zhengdong Cheng , Ying Chen

Petroleum, one of the fossil fuels, is still the main source for liquid fuel production. Lignin derived from renewable biomass has the potential to replace petroleum. The abundance of aromatic units in lignin makes it potential to produce high-value liquid fuel. This review offers a summary of the extensive study that has been devoted to the catalytic hydrodeoxygenation (HDO) of lignin-derived phenolic compounds and the conversion of raw lignin into hydrocarbon liquid fuels. Based on the product classification (cyclohexanes and arenes), different catalytic systems, mainly including catalyst species, solvents and reaction conditions, are analyzed in detail. A model study of lignin-derived compounds (phenolic monomers and dimers) is usually carried out to elaborate on the HDO reaction mechanism. 100% yield of hydrocarbon liquid fuels can be achieved in most tests. With respect to the real lignin-derived bio-oil, however, hydrocarbon yields only reach 16.2%–62.8% due to the various components and high instability of the substrate. The technical barriers and challenges in this part are highlighted throughout. Moreover, the conversion of raw lignin is also comprehensively summarized, which actually combines the depolymerization of lignin and HDO of lignin-derived bio-oil in one pot, and its hydrocarbon yields are generally lower than those of lignin-derived bio-oil. In light of this, the important features of raw lignin that influence the production of hydrocarbon liquid fuels are adequately addressed. Overall, this paper focuses on the scientific and technological advances of hydrocarbon liquid fuel production from lignin, and the potential strategies to produce renewable fuels from lignin are discussed.



中文翻译:

木质素衍生的酚类化合物的催化加氢脱氧及木质素原料转化为烃类液体燃料的研究进展

石油是一种化石燃料,仍然是液体燃料生产的主要来源。来自可再生生物质的木质素具有替代石油的潜力。木质素中大量的芳族单元使其具有生产高价值液体燃料的潜力。这篇综述提供了广泛研究的摘要,该研究致力于木质素衍生的酚类化合物的催化加氢脱氧(HDO)以及将原始木质素转化为烃类液体燃料。根据产品分类(环己烷和芳烃),详细分析了不同的催化体系,主要包括催化剂种类,溶剂和反应条件。通常对木质素衍生的化合物(酚类单体和二聚体)进行模型研究,以详细说明HDO反应机理。在大多数测试中,烃类液体燃料的收率可达到100%。但是,相对于真正的木质素生物油,由于各种成分和基质的高度不稳定性,烃的收率仅达到16.2%– 62.8%。这部分的技术障碍和挑战贯穿始终。此外,还粗略地总结了粗木质素的转化,其实际上将木质素的解聚和木质素衍生的生物油的HDO结合在一锅中,并且其烃产率通常低于木质素衍生的生物油的烃产率。鉴于此,充分解决了影响木质烃液体燃料生产的原始木质素的重要特征。总体而言,本文重点关注木质素生产烃类液体燃料的科学技术进步,

更新日期:2019-11-30
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