Patent ID: 8679227
Filing Date: 2014-03-25
Classification: B01D,Y02C

Abstract:
1. A method for making a crystalline silicoaluminophosphate (SAPO) membrane, the method comprising the steps of: a) providing a porous support having a first and a second side; b) preparing an aqueous SAPO forming membrane gel, wherein the membrane gel comprises aluminum, phosphorus, silicon, oxygen, an organic templating agent and water; c) contacting at least one side of the porous support with the membrane forming gel; d) following the contacting step in step c), heating the porous support and the membrane gel to form a membrane layer of SAPO crystals on the porous support; and e) heating the membrane layer at a temperature from about 600 K to about 1050 K in a vacuum thereby removing the templating agent from the membrane layer.