Table 3.

Literature survey on zeolites used for oxygen concentrators adopted from Pan et al. in 2017 and Semi et al. in 2022 (92).

Absorbent	Cycle type	Cycle duration(s)	Operating pressure (bar)	Purity (%)	Flow rate
5A zeolite	PSA 2-step	100	Ph = 1.52, P1 = 1.01	85	–
Oxysiv 5,7 & Sylobead MS 624	PSA 2-step	18	Ph = 3, P1 = 1.945	94.5	3.7
LiLSX zeolite	PSA 2-step	3–9	Ph = 4, P1 = 1	90	1–3
Lix zeolite	PSA 2-step	3–5	Ph = 3.04–4.05, P1 = 1.01	90	5