CPC B01J 20/3202 (2013.01) [B01D 53/02 (2013.01); B01J 20/22 (2013.01); B01J 20/3217 (2013.01); B01J 20/3244 (2013.01); B01D 2253/20 (2013.01); B01D 2257/504 (2013.01)] | 9 Claims |
1. A preparation method of a carbon dioxide capture agent, comprising the following steps of:
S1: mixing a graphite dispersion, an organic acid solution, a metal salt solution and a silica sol to obtain an organic-inorganic composite gel;
S2: subjecting the organic-inorganic composite gel to standing, aging and drying and then carbonizing the same by microwave in a mixed atmosphere of inert gas and sulfur dioxide to obtain an intermediate product; and
S3: subjecting the intermediate product to acid washing or alkali washing to obtain a defective carrier, then mixing the defective carrier with an amine substance for ultrasonic treatment and drying to obtain the carbon dioxide capture agent.
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