Using zeolites as the active adsorbent, adsorbent laminates have been
fabricated with various sheet supports. These adsorbent laminates have
been successfully operated for oxygen enrichment at high PSA cycle
frequencies, such as upwards of at least 150 cycles per minute. Methods
for making suitable adsorbent laminates are described. The methods
generally involve forming a slurry comprising a liquid suspending agent,
an adsorbent and a binder. Laminates are made by applying the slurry to
support material or admixing support material with the slurry. The slurry
can be applied to support material using a variety of techniques,
including roll coaters, split roll coaters, electrophoretic deposition,
etc. One method for making laminates by mixing support material with the
adsorbent slurry comprises depositing the slurry onto a foraminous wire,
draining the slurry material, and pressing the material to form a ceramic
adsorbent paper. Spacers can be formed on adsorbent laminates to space
one laminate from another. The spacer dimensions can be uniform, or can
vary along a laminate, such as increasing in height from a first end to a
second end of the laminate. Gas flow-through apertures also can be formed
on laminates. The laminates are adjacent one another to define flow
channel between adjacent bodies, whereby a portion of a gas flowing
through the flow channels flows through the apertures to facilitate
pressure equalization in the adsorbent structure.