Microporous carbon material for preparing highly-selective separation of propylene and propane by using starch and preparation method and application of microporous carbon material

The invention discloses a microporous carbon material for preparing highly-selective separation of propylene and propane by using starch and a preparation method and application of the microporous carbon material. The method mainly includes the following steps (1) insoluble corn starch, water and acrylic acid are mixed, then a metal salt assistant is added, the mixture is stirred well and then subjected to a dehydration condensation polymerization reaction at 160-220 DEG C, and a carbon precursor is obtained; (2) the carbon precursor obtained in the step (1) is mixed with an activator aqueoussolution, the mixture is stirred at 30-80 DEG C for an ion exchange reaction, and a solid material is obtained; and (3) the solid material obtained in the step (2) is placed in the inert atmosphere at600-900 DEG C for a high-temperature activation reaction, and the microporous carbon material is obtained. The prepared starch-based microporous carbon material is the microporous carbon material with the stable structure, th