Zhou Bo, Shi Kai, Teng Xue, Li Zhenhua, Chen Lisong, Shi Jianlin
State Key Laboratory of Petroleum Molecular & Process Engineering, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China.
State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China.
Angew Chem Int Ed Engl. 2024 Oct 24;63(44):e202411502. doi: 10.1002/anie.202411502. Epub 2024 Sep 17.
Plastic pollution, an increasingly serious global problem, can be addressed through the full lifecycle management of plastics, including plastics recycling as one of the most promising approaches. System design, catalyst development, and product separation are the keys in improving the economics of electrocatalytic plastics recycling. Here, a membrane-free co-production system was devised to produce succinic acid (SA) at both anode and cathode respectively by the co-electrolysis of polybutylene succinate (PBS) waste plastics and biomass-derived maleic acid (MA) for the first time. To this end, Cr-Ni(OH) electrocatalyst featuring much enhanced 1,4-butanediol (BDO) oxidation reaction (BOR) activity has been synthesized and the role of doped Cr has been revealed as an "electron puller" to accelerate the rate-determining step (RDS) in the Ni/Ni cycling. Impressively, an extra-high SA production rate of 3.02 g h and ultra-high apparent Faraday efficiency towards SA (FE=181.5 %) have been obtained. A carbon dioxide-assisted sequential precipitation approach has been developed to produce high-purity SA and byproduct NaHCO solids. Preliminary techno-economic analysis demonstrates that the reported system is economically profitable and promising for future industrial applications.
塑料污染是一个日益严重的全球性问题，可以通过对塑料进行全生命周期管理来解决，其中塑料回收是最具前景的方法之一。系统设计、催化剂开发和产物分离是提高电催化塑料回收经济性的关键。在此，首次设计了一种无膜联产系统，通过聚丁二酸丁二醇酯（PBS）废塑料和生物质衍生的马来酸（MA）的共电解分别在阳极和阴极生产琥珀酸（SA）。为此，合成了具有大大增强的1,4-丁二醇（BDO）氧化反应（BOR）活性的Cr-Ni(OH)电催化剂，并揭示了掺杂Cr作为“电子吸引剂”在加速Ni/Ni循环中的速率决定步骤（RDS）方面的作用。令人印象深刻的是，获得了3.02 g h的超高SA产率和对SA的超高表观法拉第效率（FE=181.5 %）。已开发出一种二氧化碳辅助的连续沉淀方法来生产高纯度SA和副产物NaHCO固体。初步的技术经济分析表明，所报道的系统在经济上是有利可图的，并且对未来的工业应用具有前景。
