A 3D extra-large-pore zeolite enabled by 1D-to-3D topotactic condensation of a chain silicate
Jian Li, Zihao Gao, Qingfang Lin, Chenxu Liu, Fangxin Gao, Cong Lin, Siyao Zhang, Hua Deng, Álvaro Mayoral, Wei Fan, Song Luo, Xiaobo Chen, Hong He, Miguel Á. Camblor, Fei‐Jian Chen, Jihong Yu
Abstract
Zeolites are microporous silicates with a large variety of applications as catalysts, adsorbents, and cation exchangers. Stable silica-based zeolites with increased porosity are in demand to allow adsorption and processing of large molecules but challenge our synthetic ability. We report a new, highly stable pure silica zeolite called ZEO-3, which has a multidimensional, interconnected system of extra-large pores open through windows made by 16 and 14 silicate tetrahedra, the least dense polymorph of silica known so far. This zeolite was formed by an unprecedented one-dimensional to three-dimensional (1D-to-3D) topotactic condensation of a chain silicate. With a specific surface area of more than 1000 square meters per gram, ZEO-3 showed a high performance for volatile organic compound abatement and recovery compared with other zeolites and metal-organic frameworks.