Microporous polymer networks for carbon dioxide capture

A method to prepare a microporous organic triazine polymer network having covalently bonded polyamine groups, comprising:

• preparing an intimate mixture comprising a hydrocarbon aromatic compound having two or more carbonitrile groups and/or a heterocyclic aromatic compound having two or more carbonitrile groups and an acid catalyst;
• placing the intimate mixture in a dry, oxygen-free polymerization device;
• polymerizing the hydrocarbon aromatic compound having two or more carbonitrile groups and/or the heterocyclic aromatic compound having two or more carbonitrile groups in the dry, oxygen-free polymerization device by heating the intimate mixture to a temperature of from 200-500° C.;
• isolating the microporous organic triazine polymer;
• reacting the microporous organic triazine polymer with a polyamine to covalently graft the polyamine to the triazine polymer network;
• isolating the microporous organic triazine polymer network having covalently bonded polyamine groups.