Xenon and {HEAD ~ krypton} are recovered from {TAIL ~ oxygen containing gas}, typically derived from liquid oxygen bottoms in a cryogenic air separation plant, by selective adsorption on a Li and Ag exchange zeolite containing 5 to 40% Ag exchange capacity on an equivalents basis, with periodic thermal regeneration of the adsorbent 
recovered from
Xenon and { HEAD ~ krypton } are recovered from { TAIL ~ oxygen containing gas } , typically derived from liquid oxygen bottoms in a cryogenic air separation plant , by selective adsorption on a Li and Ag exchange zeolite containing 5 to 40 % Ag exchange capacity on an equivalents basis , with periodic thermal regeneration of the adsorbent
OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH