Development on high performance gas separation process using gas adsorption

In pressure swing adsorption (PSA), a dry gas separation process, a strong adsorbate is adsorbed and a weak adsorbate is extracted from a mixture gas at higher pressure conditions, while a strong adsorbate in adsorbent can be desorbed and recovered at lower pressure. This process was realized for oxygen, nitrogen, hydrogen, and dry air separation in the early 1960s and spread rapidly. PSA was applied in different industrial fields due to the industrialization of zeolite synthesis and energy saving vacuum type PSA, we discuss an application of zeolite adsorbents to PSA with development of new gas separation processes such as NO2 and ozone enrichment.