A short review on recent advances in porous adsorbents for separation of oxygen from atmospheric air

Pure oxygen demand is continuously increasing worldwide due to wide applications including medical and industrial. Pressure swing adsorption (PSA) is one of the promising techniques to separate O-2 from atmospheric air. The porous solid adsorbent is a key element in the PSA to trap nitrogen (N-2) and release O-2. Several adsorbents including low silica X (LSX), zeolite 5A, ion-exchanged LSX (Li-LSX, AgLi-LSX, Ca-LSX), Engelhard titanosilicate (Na-ETS-10, Ag-ETS-10), and SSZ-13 have been investigated for adsorption of N-2 from the air. This review article is a summarization of recent research work published on O-2 separation using different porous adsorbents via PSA. This review also emphasizes on the best porous sorbent for purification of O-2 by sorption of N-2 and Ar. The adsorption capacities with experimental conditions are also rigorously discussed. The review also proposed future trends and prospects for O-2 separation. This review will be helpful to choose remarkable adsorbent for the generation pure O-2.