Ma Yansong, Zhao Zheyu, Chen Jue, Chen Yanjun, Wang Bin, Luo Yunjie
School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China.
School of Biological and Chemical Engineering, NingboTech University, Ningbo 315100, P. R. China.
Inorg Chem. 2024 Sep 23;63(38):17574-17583. doi: 10.1021/acs.inorgchem.4c02202. Epub 2024 Sep 5.
Chemical recycling is a promising strategy to establish a circular plastic economy, and it is still in an early stage of development. In this work, the reductive depolymerization of polyesters and polycarbonates into their corresponding borylated alcohols promoted by heterogeneous lanthanum materials was described. Grafting the easily accessible lanthanum tris(aminobenzyl) complex La(CHCHNMe-) () onto the partially dehydroxylated silica support SBA-15 (SBA-15 or SBA-15) gave the inorganic-organic hybrid materials @SBA-15 and @SBA-15. These hybrid lanthanum materials, in combination with pinacolborane (HBpin), could serve as highly active heterogeneous catalysts for the selective depolymerization of aliphatic and aromatic polyesters, as well as polycarbonates into their corresponding borylated diols through a hydroboration reaction under mild conditions. The lanthanum materials exhibited a practical application in plastic waste recycling for their easy preparation, high catalytic efficiency, and recyclable property.
化学循环利用是建立循环塑料经济的一种有前景的策略，并且仍处于发展初期。在这项工作中，描述了由多相镧系材料促进的聚酯和聚碳酸酯还原解聚为其相应的硼化醇的过程。将易于获得的三（氨基苄基）镧配合物La(CHCHNMe-)（）接枝到部分脱羟基的二氧化硅载体SBA-15（SBA-15或SBA-15）上，得到无机-有机杂化材料@SBA-15和@SBA-15。这些杂化镧系材料与频哪醇硼烷（HBpin）结合，可作为高活性多相催化剂，用于在温和条件下通过硼氢化反应将脂肪族和芳香族聚酯以及聚碳酸酯选择性解聚为其相应的硼化二醇。镧系材料因其易于制备、催化效率高和可回收性能而在塑料废物回收中具有实际应用价值。
