The growth of SAPO 34 membrane layer on support surface for gas permeation application

Single gas permeation of CO2 and H2 showed that upto 300 KPa of feed pressure permeability of CO2 is more than that of H2. But at higher pressure the results show the reverse trend, flux is more for H2. This may be due to more adsorption of CO2 on SAPO 34 surface and less desorption from the surface than hydrogen with increasing pressure. The selectivity of H2/CO2 increases from 0.85 to 2.67.