| abstract |
Ozone is recovered from an ozone-oxygen mixture bynadsorption using an adsorbent which comprises a zeolitenselected from (i) ammonium-exchanged L type zeolite, Y typenzeolite, ZSM-5, or mordenite and (ii) proton-exchanged Lntype zeolite, in which at least 90% of the exchangeablencation content is in the ammonium form for zeolite (i) or innthe proton form for zeolite (ii) and the molar ratio ofnpotassium to aluminum is less than 0.25. |