Pressure swing adsorption (PSA) is a technology used to separate some gas species from a mixture of gases under pressure according to the species' molecular characteristics and affinity for an adsorbent material. It operates at near-ambient temperatures and so differs from cryogenic distillation techniques of gas separation. Special adsorptive materials (e. G., zeolites) are used as a molecular sieve, preferentially adsorbing the target gas species at high pressure. The process then swings to low pressure to desorb the adsorbent material.
| Property | Unit | zeolite molecular sieve 13X HP | Note |
| Diameter | mm | 0.5-1.0 | 1.6-2.5 |
| Static Water Adsorption | %wt | ≥ 28.5 | ≥ 28.5 | 17.5mmHg, 25º C |
| Static CO2 Adsorption | %wt | ≥ 19 | ≥ 19 | 250mmHg, 25º C |
| Bulk Density | g/ml | ≥ 0.62 | ≥ 0.62 | Settled |
| Loss on ignition | %wt | ≤ 1.50 | ≤ 1.50 | 575º C, 1hr |
| Loss on attrition | %wt | ≤ 0.20 | ≤ 0.20 | ~ |
| Crush strength | N | ~ | ≥ 20 | Avg. 25 beads |
| Particle ratio | % | ≥ 97 | ≥ 97 | ~ |
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