Zeolitic Octahedral Metal Oxides with Ultra‐Small Micropores for C<sub>2</sub> Hydrocarbon Separation
Jie Wang, Qianqian Zhu, Zhenxin Zhang, Masahiro Sadakane, Yanshuo Li, Wataru Ueda
Abstract
Abstract Separation of C 2 hydrocarbons, C 2 H 6 , C 2 H 4 , and C 2 H 2 , remains significant challenges in chemical industry. However, there are only few adsorbents that can effectively isolate C 2 hydrocarbons from their mixtures particularly at a high temperature. Herein, we design a zeolitic octahedral metal oxide based on ϵ‐Keggin polyoxometalates with metal ion linkers. Single gas adsorption of the material shows the different adsorption performances for the C 2 hydrocarbons and the strong interaction of the material with the C 2 hydrocarbons. Dynamic competitive adsorption experiments show that the material efficiently separates each of the binary C 2 hydrocarbon mixtures and even the ternary C 2 hydrocarbon mixtures with high selectivity. The material keeps high separation performance even the temperature was increased to 85 °C. The material is stable and is able to be reused without loss of the separation performance.