Gas adsorption agents particularly for separating H.sub.2 from a gaseous phase
AssigneeAgence Nationale de Valorisation de la Recherche
InventorsMichel B. Armand, Francis J. P. Jeanne
Life of this patent
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Abstract
Gas adsorbents comprise at least one paracyclophane (or PCP) derivative, constituted by cyclic oligomers formed of mer-units which are interlinked so as to define a rigid structure with a substantially cylindrical intramolecular cavity. The dimensions of the cross-section of said cavity correspond substantially to those of the one or more types of gas molecules that it is desired to introduce therein.
Claims24
A method of retaining gases in the intramolecular cavity of a gas adsorption agent comprising at least one paracyclophane (or PCP) derivative, constituted by cyclic oligomers formed of oligomer-units which are interlinked so as to define a rigid structure with a substantially cylindrical intramolecular cavity, the dimensions of the cross-section of said cavity corresponding substantially to those of the one or more types of gas molecules that it is desired to insert therein, the rigidity of said structure being such that the rotary movements of the atoms which constitute said units cannot result in substantial variations in the volume of said cavity up to a temperature of the order of 250.degree. C., which comprises:
- (a) contacting a medium comprising the gas to be adsorbed whose molecules have a dimension substantially similar to those of the internal space of said gas adsorption agent with the aforesaid gas adsorption agent;
- (b) permitting said gas adsorption agent to adsorb said gas;
- and
- (c) separating said gas adsorption agent containing said adsorbed gas from the medium previously containing said adsorbed gas.
An electrode formed of a porous metal or other conventionally used materials which additionally comprises a gas adsorption agent, said gas adsorption agent comprising at least one paracyclophane (or PCP) derivative, constituted by cyclic oligomers formed of oligomer-units which are interlinked so as to define a rigid structure with a substantially cylindrical intramolecular cavity, the dimensions of the cross-section of said cavity corresponding substantially to those of the one or more types of gas molecules that it is desired to insert therein, the rigidity of said structure being such that the rotary movements of the atoms which constitute said units cannot result in substantial variations in the volume of said cavity up to a temperature of the order of 250.degree. C.
Dependencies are inferred from the claim text.