effect nano of zeolite 4a loading on polymer membrane to increase permeability and selectivity co2/n2

The separation of co2 gas is very important to meet environmental standards, this research aims to prepare a membrane that improves the selectivity of co2 over n2 gas. polymer (polyether-block amide) has properties that absorb co2 well. nano zeolite 4a has tiny pores proportional to the kinetic diameter of co2. this mineral particle can act as a molecular sieve in the membrane and improve thermal and mechanical stability. by these two materials, pebax/4a membrane was prepared. the structure of the membranes was evaluated by fesem, bet, ft-ir, and mechanical strength analyses, and the permeability, selectivity, diffusion coefficient, and solubility coefficient of carbon dioxide were calculated in them. finally, it was found that by adding 10% by weight of 4a, the selectivity of nanocomposite improved by %28 ​​compared to pure polymer.