Recent progresses in chemical recycling and upcycling of waste plastics

被引：0
作者：
Chen H. [1 ]
Wan K. [1 ]
Niu B. [1 ]
Zhang Y. [1 ]
Long D. [1 ]
机构：
[1] College of Chemical Engineering, East China University of Science and Technology, Shanghai
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2022年 / 41卷 / 03期
关键词：
Catalyst; Chemical recycling; Chemical upcycling; Reaction mechanism; Waste plastics;
D O I：
10.16085/j.issn.1000-6613.2021-2227
中图分类号：
学科分类号：
摘要：
Plastics play an important role in social and economic development, while their mass production and inappropriate disposal have caused serious ecological disasters. The transformation of waste plastics into value-added products through chemical recycling and upcycling is one of the key technologies to achieve sustainable development of plastic resources. This review comprehensively summarizes recent progress in waste plastic valorization by various methods (e.‍g., catalytic pyrolysis, solvolysis, hydrogenolysis, photocatalysis, chemical oxidation, etc.), focusing on discussing the effects of reaction conditions on product distribution and yields, structure-activity relationships, and reaction mechanisms. In view of the existing problems such as harsh reaction conditions, high catalyst cost and low reuse ability, future research directions are proposed, including optimization of process conditions, clarification of catalyst deactivation mechanism and development of inexpensive and efficient catalysts, which are expected to realize the industrial development of plastic resource utilization. © 2022, Chemical Industry Press Co., Ltd. All right reserved.
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页码：1453 / 1469
页数：16
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