Adsorbent material, adsorption system, and adsorption process

A pressure swing adsorption system, comprising:

• a vessel positionable to receive a fluid to purify the fluid, the vessel having a bed of adsorbent material;
• the bed of adsorbent material comprising a first layer of adsorbent material having a minor portion of micropores occluded with at least one salt consisting of a metal cation and an anion comprised of carbon (C), hydrogen (H), and oxygen (O), or a minor portion of the micropores, mesopores, and macropores occluded with the at least one salt;
• and
• wherein the at least one salt is at least one metal acetate and the first layer of adsorbent material has the minor portion of micropores occluded with the at least one metal acetate, the minor portion of micropores occluded with the at least one metal acetate being less than 42% of the micropores of the adsorbent material of the first layer of adsorbent material being occluded on a volume basis and greater than 8% of the micropores of the adsorbent material of the first layer of adsorbent material being occluded on a volume basis.

A process for making adsorbent material for adsorption processing, the process comprising:

• exposing a solid particulate adsorbent material to a first salt solution for a pre-selected period of time for occlusion of a minor portion of micropores of the adsorbent material with at least one salt of the first salt solution, the at least one salt of the first salt solution comprising at least one salt consisting of a metal cation and an anion comprised of carbon (C), hydrogen (H), and oxygen (O) and wherein the at least one salt comprises a first metal acetate;
• drying the adsorbent material;
• exposing the solid particulate adsorbent material to a second salt solution comprising a second metal acetate for a pre-selected period of time for occlusion of a minor portion of micropores of the adsorbent material with the second metal acetate;
• heating the adsorbent material after the adsorbent material was exposed to the first salt solution and the second salt solution to convert the first metal acetate to a first metal carbonate and to convert the second metal acetate to a second metal carbonate;
• and
• washing the adsorbent material to remove the first metal carbonate from the adsorbent material and facilitate positioning of the second metal carbonate in a minor portion of macropores of the adsorbent material.