METHOD OF MAKING SAPO-34 MEMBRANES FOR USE IN GAS SEPARATIONS

摘要

A method of making a crystalline silicoaluminophosphate-34 (SAPO-34) membrane. The method comprises the steps of providing a porous support having a pore size distribution such that a small proportion of its pores are larger than 10 microns, seeding the porous support with SAPO-34 seed crystals by capillary suspension infiltration to give a seeded support, and growing a SAPO-34 membrane layer on the surface of the seeded support.