Jiayou Feng, Jindi Duan, Chin-Te Hung, Zhenghao Zhang, Kailin Li, Yan Ai, Chaochao Yang, Yiyue Zhao, Zhengmin Yu, Yahong Zhang, Liang Wang, Dongyuan Zhao, Wei Li
Catalytic upcycling of polyolefins into high-value chemicals represents the direction in end-of-life plastics valorization, but poses great challenges. Here, we report the synthesis of a tandem porous catalyst via a micelle cascade assembly strategy for selectively catalytic cracking of polyethylene into olefins at a low temperature. A hierarchically porous silica layer from mesopore to macropore is constructed on the surface of microporous ZSM-5 nanosheets through cascade assembly of dynamic micelles. The outer macropore arrays can adsorb bulky polyolefins quickly by the capillary and hydrophobic effects, enhancing the diffusion and access to active sites...
April 21, 2024: Angewandte Chemie