School of Materials Science and Engineering, Shanghai University, Shanghai, 200444, China.
Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai, 200444, P. R. China.
Angew Chem Int Ed Engl. 2023 Jul 17;62(29):e202301340. doi: 10.1002/anie.202301340. Epub 2023 Jun 14.
A low-temperature hydrogen-free process for upcycling polyethylene (PE) plastics into aliphatic dicarboxylic acid is developed using a heterogeneous catalyst Ru/TiO . The low-density PE (LDPE) conversion can reach 95 % in 24 h under a pressure of 1.5 MPa air at 160 °C with 85 % of the liquid product yield, which mainly is low molecular weight aliphatic dicarboxylic acid. Excellent performances can be also achieved for different PE feedstocks. This catalytic oxi-upcycling process paving a new way of upcycling polyethylene waste.
开发了一种使用非均相催化剂 Ru/TiO 的低温无氢工艺，可将聚乙烯（PE）塑料升级为脂肪族二羧酸。在 160°C、1.5 MPa 空气压力下，低密度聚乙烯（LDPE）在 24 h 内的转化率可达 95%，液体产物收率为 85%，主要为低分子量脂肪族二羧酸。不同的 PE 原料也能表现出优异的性能。这种催化氧化升级工艺为聚乙烯废物的升级利用开辟了新途径。
