Yang Bo, Dong Zhun, Tan Zixuan, Cai Yihong, Xie Shaoqu
School of Light Industry and Chemical Engineering, Guangdong University of Technology, Guangzhou 510006, PR China.
SinoHykey Technology Company Ltd., 8 Hongyuan Road, Huangpu District, Guangzhou 510760, PR China.
Sci Total Environ. 2024 Dec 10;955:176882. doi: 10.1016/j.scitotenv.2024.176882. Epub 2024 Oct 16.
Under the current trend of pursuing sustainable development and environmental protection, the important application of carbon dioxide (CO) in the conversion process of biomass or waste plastics has become a research direction of concern. The goal of this conversion process is to achieve the efficient use of carbon dioxide, providing a process for the efficient use of biomass, and solving the environmental problems caused by plastics. Remarkable progress has been made in the study of the reaction of CO with other substances to produce methane, low-carbon hydrocarbons, methanol, formic acid, and its derivatives, as well as ethers, aldehydes, gasoline, low-carbon alcohols, and other chemicals. In this paper, the important role of CO in the conversion of alcohol, sugar, cellulose, and waste plastics was reviewed, with emphasis on the important applications of CO as a carbon source, reactant, reaction medium, enhancing agent, solvent, and carrier gas in the conversion of biomass or waste plastics and the basic insights of the reaction mechanism. The emerging CO new roles not only put forward the green application of CO but also have guiding significance for the utilization of biomass resources and the treatment of waste plastics.
在当前追求可持续发展和环境保护的趋势下，二氧化碳（CO₂）在生物质或废塑料转化过程中的重要应用已成为一个备受关注的研究方向。这一转化过程的目标是实现二氧化碳的高效利用，提供生物质高效利用的途径，并解决塑料带来的环境问题。在二氧化碳与其他物质反应生成甲烷、低碳烃、甲醇、甲酸及其衍生物，以及醚、醛、汽油、低碳醇等化学品的研究方面已取得显著进展。本文综述了二氧化碳在醇、糖、纤维素和废塑料转化中的重要作用，重点阐述了二氧化碳作为碳源、反应物、反应介质、增强剂、溶剂和载气在生物质或废塑料转化中的重要应用以及反应机理的基本见解。二氧化碳这些新出现的作用不仅提出了其绿色应用，而且对生物质资源利用和废塑料处理具有指导意义。
