Catalytic Oxidation of Biorefinery Lignin to Value-added Chemicals to Support Sustainable Biofuel Production
Catalytic Oxidation of Biorefinery Lignin to Value-added Chemicals to Support Sustainable Biofuel Production
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DOI：
10.1002/cssc.201402503
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发表时间：
2015-01-01
期刊：
影响因子：
8.4
通讯作者：
Zhang, Xiao
中科院分区：
文献类型：
--
作者：
Ma, Ruoshui;Xu, Yan;Zhang, Xiao
将植物生物质转化为生物燃料是为数不多的能够真正满足人类对液体运输燃料的长期需求，并将对环境影响降至最低的解决方案之一。然而，尽管经过几十年的努力，生物质到生物燃料转化过程的商业开发仍然不是一个经济上可行的提议。在生产生物燃料的同时确定具有附加值的联合产品是克服这一经济障碍的关键解决办法。在几乎所有的植物生物质中，木质素是仅次于纤维素的第二大组分；新兴的生物质炼油业不可避免地会产生大量的木质素。开发选择性生物精炼木质素到生物制品的转化工艺将在显着提高可再生生物质生产生物燃料的经济可行性和可持续性方面发挥关键作用。在过去的几年里，人们越来越认识到这一努力的紧迫性和重要性。本文综述了造纸过程中木素氧化解聚的最新化学方法，以及可应用于木质素生物精制的氧化催化剂，以高选择性和高产率地生产包括酚类化合物、二元酸和苯二酚在内的平台化学品。讨论了将新型催化剂与工业脱木素化学相结合的潜在协同效应。我们希望这些信息将建立在现有知识的基础上，为开发实用和商业上可行的木质素转化技术提供新的见解，使木质纤维生物质的可持续生物燃料生产能够与化石燃料竞争。
Transforming plant biomass to biofuel is one of the few solutions that can truly sustain mankind's long-term needs for liquid transportation fuel with minimized environmental impact. However, despite decades of effort, commercial development of biomass-to-biofuel conversion processes is still not an economically viable proposition. Identifying value-added co-products along with the production of biofuel provides a key solution to overcoming this economic barrier. Lignin is the second most abundant component next to cellulose in almost all plant biomass; the emerging biomass refinery industry will inevitably generate an enormous amount of lignin. Development of selective biorefinery lignin-to-bioproducts conversion processes will play a pivotal role in significantly improving the economic feasibility and sustainability of biofuel production from renewable biomass. The urgency and importance of this endeavor has been increasingly recognized in the last few years. This paper reviews state-of-the-art oxidative lignin depolymerization chemistries employed in the papermaking process and oxidative catalysts that can be applied to biorefinery lignin to produce platform chemicals including phenolic compounds, dicarboxylic acids, and quinones in high selectivity and yield. The potential synergies of integrating new catalysts with commercial delignification chemistries are discussed. We hope the information will build on the existing body of knowledge to provide new insights towards developing practical and commercially viable lignin conversion technologies, enabling sustainable biofuel production from lignocellulosic biomass to be competitive with fossil fuel.