A PROCESS FOR THE PREPARATION OF MOLECULAR SIEVE ADSORBENT FOR THE SIZE/SHAPE SELECTIVE ADSORPTION OF CARBON DIOXIDE FROM ITS GASEOUS MIXTURE WITH NITROGEN

摘要

A process for the size/shape selective adsorption of carbon dioxide from its gaseous mixture with nitrogen, especially, such as in the flue gas at ambient to elevated temperature with an adsorbent comprising A-type zeolite pore engineered by the treatment of tetra alkyl alkoxide to preferentially adsorb carbon dioxide. The carbon dioxide is thereafter removed from the adsorbent by pressure swing or applying vacuum or by heating the adsorbent above the adsorption temperature and recovering the carbon dioxide as a product stream.