Ozone recovery by zeolite adsorbents

摘要

Ozone is recovered from an ozone-oxygen mixture by adsorption using an adsorbent which comprises a zeolite selected from (i) ammonium-exchanged L type zeolite, Y type zeolite, ZSM-5, or mordenite and (ii) proton-exchanged L type zeolite, in which at least 90% of the exchangeable cation content is in the ammonium form for zeolite (i) or in the proton form for zeolite (ii) and the molar ratio of potassium to aluminum is less than 0.25.