| PATENT ASSIGNEE'S COUNTRY | France |
| UPDATE | 07.99 |
| PATENT ASSIGNEE | Air Liquide SA |
| PATENT CLAIMS |
Process of sepn of gas mixt contg O & N, including bringing the mixt to be separated into contact in an adsorption zone consisting of a first selective adsorbent for N & second selective adsorbent for N, the first adsorbent being a zeolite of faujasite type exchanged to > 80% with Li, in which Si/Al < 1.5, the second adsorbent being a zeolite exchanged with divalent cations selected from the group consisting of alkaline-earth metal cations & transition metal cations, the second adsorbent having - A N adsorptivity C2 lower than a N adsorptivity C1 of the first adsorbent - An adsorption selectivity for N in rel. to O at 100000 Pa & at 20C > 3 - Parameter ak2 which obeys: ak2 > ak1 The parameters ak1 & ak2 characterizing the kinetics of N adsorption on a first & second adsorbents resp. in accordance with the Linear Driving Force model |
| PATENT PHOTOCOPY | Available on request |
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