METHODS OF ABSORPTION AND DESORPTION OF CARBON DIOXIDE, AND APPARATUS FOR EACH, FOR BENEFICIAL RE-USE OF CARBON DIOXIDE

摘要

A method of absorbing CO2 from a gas that includes a volume, V1, of CO2 comprising: providing a CC2-absorption substrate, and contacting the gas with the substrate, whereby a volume, V2, of CO2 is absorbed from the gas by the substrate, wherein the substrate comprises a porous material, the composition of which comprises at least one chemical element having an atomic number of 13 or greater, onto which any one or more of the following CO2-absorbers is adsorbed: a primary, secondary or tertiary amine, or a quaternary ammonium compound. Also a method of desorbing CO2 from a CO2-rich absorption substrate, the substrate having any one or more of the following CO2-absorbers adsorbed onto it: a primary, secondary or tertiary amine, or a quaternary ammonium compound and a pre-absorbed volume, V3, of CO2, the method comprising: treating the substrate with an acid, thereby releasing a volume, V4, of the absorbed CO2.