农业环境科学学报2025，Vol.44Issue(3)：641-653,13.DOI:10.11654/jaes.2024-1142
塑料废弃物定向转化为高值化学品研究进展
Research progress on targeted conversion of waste plastic to high-value chemicals
摘要
Abstract
In recent years,global plastic production has continued to increase,yet a large amount of plastic waste is scattered in the environment,which not only seriously threatens ecological safety but also leads to a huge waste of resources.Converting plastic waste into oil products through chemical recycling offers an important pathway for achieving the high-value conversion and utilization of low-value resources.However,with the onset of the"carbon peaking and carbon neutrality goals"era and the shift in China′ s oil refining consumption structure toward cleaner,low-carbon alternatives,the transition from oil to chemicals has become a key focus in the restructuring of the energy industry.Therefore,converting waste plastics into high-value chemicals not only aligns with the"waste-to-treasure"waste management strategy but also supports the achievement of the"carbon peaking and carbon neutrality goals".Here,we summarized the technologies for the high-value utilization of plastic waste,including new methods such as thermal pyrolysis,catalytic cracking,solvent depolymerization,electrochemical processes,photocatalysis,and biotransformation.Subsequently,we focused on the research progress in using these technologies to depolymerize and recombine polymer plastic products,generating high-value chemicals(such as low-carbon olefins,aromatic hydrocarbons,acids,alcohols,aldehydes,and plastic monomers)through cracking and polymerization,catalytic conversion,and bioconversion.The transformation pathways mainly include"plastic waste-monomers,oligomers,and other intermediates-high value chemicals"and"plastic waste-high value chemicals".Finally,some issues about the future research in this field were addressed.关键词
塑料废弃物/高值化学品/低碳烯烃/芳香烃/塑料单体/升级再造/低碳减排Key words
plastic waste/high value chemicals/low carbon olefins/aromatic hydrocarbons/plastic monomer/upgrading and reengineering/low carbon emission reduction分类
环境科学引用本文复制引用
杜祥瑞,丁恒,高彦征..塑料废弃物定向转化为高值化学品研究进展[J].农业环境科学学报,2025,44(3):641-653,13.基金项目
国家重点研发计划项目(2023YFE0110800,2023YFC3708100) （2023YFE0110800,2023YFC3708100）
国家自然科学基金项目(U22A20590,42430703) National Key Research and Development Program of China(2023YFE0110800,2023YFC3708100) （U22A20590,42430703）
National Natural Science Foundation of China(U22A20590,42430703) （U22A20590,42430703）
