THE USE OF BASE TREATED ALUMINA IN PRESSURE SWING ADSORPTION

摘要

Pressure swing adsorption to remove CO2 from a gas stream is conducted using an improved alumina obtained by impregnating a starting alumina with a basic so lution having a pH of at least 9, e.g. of a basic compound such as KHCO3, and drying at a temperature low enough to avoid decomposing the basic compound to a form which adsorbs C O2 such that the compound does not regenerate under reduced pressure purging.