METHOD FOR PRODUCING CARBON DIOXIDE ADSORBENT AND METHOD OF ADSORBING AND DESORBING CARBON DIOXIDE

摘要

Provided is an adsorbent adapted to adsorb carbon dioxide by increasing the pressure, and to carry out 10% or more adsorption and adsorption of the adsorbed carbon dioxide by lowering the pressure at atmospheric pressure or higher in a range of 100 to 900kPa without vacuuming or the like. As a result of using amorphous aluminum silicate with a Si/Al ratio of 0.7 to 1.0 and having a peak in the vicinity of -78ppm and -87ppm in a 29 Si solid NMR spectrum, adsorption and desorption of 10wt% or more can be performed in a range of 100 to 900kPa, and this can be used as a carbon dioxide adsorbent mainly in the pressure swing adsorption method.