METHOD FOR SELECTIVE ADSORPTION OF NITROGEN FROM GAS MIXTURE

摘要

PURPOSE: To adsorption separate effectively and selectively nitrogen in air by using at least a binary exchanged X-zeolite having at least one of calcium and strontium and a specific proportional % lithium. CONSTITUTION: The process is to adsorb nitrogen from gas mixtures contg. nitrogen and less strongly adsorbed components, such as air. The gas mixtures is brought into contact with an adsorbent of a crystalline X-zeolite which has a ratio of 1.5 or higher of zeolite type Si to zeolite type Al and is at least binary-ion exchanged in such a manner that 5-95% lithium and 5-95% another ion selected from the group consisting of calcium, strontium and mixtures thereof are contained and amounts of lithium and another ion exchanger are at least 60% of the exchangeable ion components.