Highly Permeable and Well-Oriented SAPO-34 Membranes for CO₂ Removal.

ABSTRACT: In this work, a multistep procedure was developed to synthesize thin and well-oriented SAPO-34 zeolite membranes that exhibit high permeability in the CO₂/CH₄ separation process. In this method, various combinations of zeolite membrane synthesis techniques, including support masking, cationic linkage, chemical functionalization, dip coating, hydrothermal synthesis, and dry-gel conversion (DGC) were investigated. To determine the orientation of the crystals in the zeolite layer and its effect on membrane structural characteristics and separation performance, the crystallographic preferred orientation (CPO) index was applied in a quantitative comparison evaluation. The results showed that a higher crystal orientation leads to thinner membranes, lower diffusion resistanc

SUBMITTER: Mirfendereski SM 

PROVIDER: S-EPMC11835259 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature