Huang Yanze, Yamazaki Yukari, Nomoto Katsutoshi, Miura Hiroki, Shishido Tetsuya, Jin Xiongjie, Nozaki Kyoko
Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan.
Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, Tokyo, Japan.
Nat Commun. 2025 Feb 6;16(1):1188. doi: 10.1038/s41467-025-56488-4.
Recycling of epoxy composites is of importance for achieving circular economy as demand for lightweight materials in the field of sustainable technologies is soaring. Although catalytic hydrogenolysis of epoxy resins provides a promising approach to recover valuable fillers and phenolic compounds from the composites, there is a lack of a reusable solid catalyst for this purpose. Here, we report a robust CeO-supported Ni-Pd bimetallic catalyst (Ni-Pd/CeO) for the hydrogenolysis of C-O bonds in epoxy resins under 1 atm of H. Benefiting from its heterogeneous nature, Ni-Pd/CeO can be reused for several times. Furthermore, the catalyst is successfully applied to decomposition of epoxy composites to recover carbon or glass fibers and phenolic compounds, implying the potential application of our catalyst system toward recycling of epoxy composites.
随着可持续技术领域对轻质材料的需求飙升，环氧复合材料的回收利用对于实现循环经济至关重要。尽管环氧树脂的催化氢解为从复合材料中回收有价值的填料和酚类化合物提供了一种有前景的方法，但目前缺乏用于此目的的可重复使用的固体催化剂。在此，我们报道了一种坚固的CeO负载的Ni-Pd双金属催化剂（Ni-Pd/CeO），用于在1个大气压的氢气下对环氧树脂中的C-O键进行氢解。得益于其多相性质，Ni-Pd/CeO可以重复使用多次。此外，该催化剂成功应用于环氧复合材料的分解，以回收碳或玻璃纤维以及酚类化合物，这意味着我们的催化剂体系在环氧复合材料回收方面具有潜在应用价值。
