Oxygen adsorbent and process for the separation of oxygen and nitrogen using same.

摘要

Oxygen adsorbent for adsorbing oxygen from a two-component mixed gas consisting essentially of oxygen and nitrogen which comprises a substantially pure Na-A type zeolite having dissolved therein at least divalent iron or the iron dissolved Na-A type zeolite a portion of Na of which is substituted with K. A process for the separation of a two-component mixed gas consisting essentially of oxygen and nitrogen into oxygen and nitrogen which comprises passing the two-component mixed gas through a layer filled with the above oxygen adsorbent in a low temperature region below room temperature and adsorbing oxygen selectively with the adsorbent is also disclosed. Further, a process for the separation of a two-component mixed gas consisting essentially of oxygen and nitrogen into oxygen and nitrogen is disclosed which comprises passing the two-component mixed gas through a layer filled with the above adsorbent in a low temperature region below room temperature at a relatively high pressure, adsorbing oxygen selectively with the adsorbent, collecting nitrogen gas, and then collecting the adsorbed oxygen by reducing the pressure in the layer filled with the adsorbent to a relatively low level.