CPC B01J 20/24 (2013.01) [B01J 20/103 (2013.01); B01J 20/18 (2013.01); B01J 20/20 (2013.01); B01J 20/226 (2013.01); B01J 20/2808 (2013.01); B01J 20/28059 (2013.01); B01J 20/28061 (2013.01); B01J 20/28066 (2013.01); B01J 20/28083 (2013.01); B01J 20/3085 (2013.01); B01J 20/3204 (2013.01); B01J 20/3208 (2013.01); C02F 1/285 (2013.01); C02F 1/288 (2013.01); C02F 2101/203 (2013.01); C02F 2101/206 (2013.01); C02F 2101/22 (2013.01)] | 12 Claims |
1. An adsorbent, comprising a porous substrate and a carboxylic acid dimer; the porous substrate comprising a surface and a plurality of holes, and the carboxylic acid dimer being loaded onto the surface or in the plurality of holes of the porous substrate;
wherein:
an average pore size of the porous substrate is not smaller than 2 nm;
the carboxylic acid dimer is loaded onto the porous substrate by at least one of the following manners:
a) the carboxylic acid dimer is loaded onto the porous substrate through a Si—OH bond;
b) the carboxylic acid dimer is loaded onto the porous substrate through the exchange between a carboxyl group and chlorine;
c) the carboxylic acid dimer is loaded onto the porous substrate through the exchange between a carboxyl group and a hydroxyl group; and
d) the carboxylic acid dimer is loaded onto the porous substrate through the coordination of a carboxyl group and aluminum or silicon.
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