▎ 摘　　要

NOVELTY - Preparation of mixed matrix film involves (1) sticking tar granule on surface of flat plate as supporting body, (2) dispersing modified graphene oxide in organic solvent, mixing uniformly, adding polymer matrix and continuously stirring at room temperature, adding cross-linking agent and catalyst, stirring at room temperature, standing and defoaming to obtain casting solution, (3) pouring casting film liquid on the surface of support of flat plate, scraping the film using scraping machine, placing obtained film at room temperature to volatilize solvent, thermally processing and drying film and stripping dried film from flat plate. USE - Preparation of mixed matrix film used for removing organic impurities in inorganic phase gas (all claimed). ADVANTAGE - The mixed matrix film effectively uses tar particle waste, can treat impurity content to less than 1 ppm and has improved removing effect.