Gating control effect facilitates excellent gas selectivity in a novel Na-SSZ-27 zeolite†
Abstract
A novel Na-SSZ-27 zeolite was demonstrated to possess excellent H2/CO2 diffusion selectivity of more than 100. This investigation highlights the crucial effect of the “gating control” of the 8-ring windows on the separation, where sodium cations act as gates to selectively control the diffusion of CO2 and promote the selectivity for H2.