Reusable polysilsesquioxane adsorbents for pollutants
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsMichael A. Markowitz, Mark C. Burleigh, Bruce P. Gaber
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Abstract
This invention pertains to adsorption by an adsorbent of an adsorbate and to regeneration of the loaded adsorbent. The adsorption includes contacting an adsorbent selected from arylene-bridged polysilsesquioxanes and derivatives thereof with an adsorbate selected from aromatics and heterocyclics, particularly monocyclic heterocyclics containing carbon and nitrogen atoms in a 6-member non-aromatic ring, for a period of time sufficient to adsorb all or part of the adsorbate by the adsorbent. Regeneration of the loaded adsorbent includes removing all or part of adsorbate from the adsorbent by means of an alcohol wash or by thermal desorption of the adsorbent containing adsorbate.
Claims7
A method of regenerating an adsorbent containing an adsorbate comprising the step of removing the adsorbate from the adsorbent by a technique selected from the group consisting of an alcohol wash, thermal desorption, and mixtures thereof, wherein the adsorbent is a porous polymer made from one or more monomers having the structural formula:
- (RO)3—Si—B—A—B—Si—(OR)3
- wherein A group is a divalent arylene group;
- B groups are same or different, saturated or unsaturated, hydrocarbon groups;
- and R groups are same or different, saturated or unsaturated, monovalent hydrocarbon groups;
- and wherein the adsorbate is selected from the group consisting of aromatics, heterocyclics, and mixtures thereof;
- and wherein the adsorbate is selected from the group consisting of aromatics, heterocyclics, and mixtures thereof.
Dependencies are inferred from the claim text.