| abstract |
Disclosed is a carbon dioxide adsorbent having excellent adsorptivity and strength (particularly abrasion resistance) that can withstand use in a continuous processing system. A carbon dioxide adsorbent is formed by supporting an amine compound on silica gel. Silica gel has a particle diameter of 1 mm or more and 5 mm or less, an average pore diameter of 10 nm or more and 100 nm or less, and a pore volume of 0.1 cm 3 / g or more and 1.3 cm in a state where no amine compound is supported. 3 / g or less. [Selection figure] None |