A porous coordination polymer and its preparation method and its application in separation of C3H6 / C3H8 mixed gas

Abstract

The present invention relates to a porous coordination polymer, a preparation method thereof, and its application in the separation of C3H6 / C3H8 mixed gas, belonging to the field of new materials for industrial gas separation. The structural formula of the porous coordination polymer is [Zn(M)(N)] n , where M is a first organic ligand containing multiple carboxyl groups, and N is a second organic ligand containing multiple nitrogen groups. The metallic zinc center in the porous coordination polymer is tetracoordinated, coordinated with the two oxygen groups on the carboxyl groups of the first organic ligand and with the two nitrogen groups in the second organic ligand. This porous coordination polymer has unique one-dimensional corrugated pores, exhibiting high adsorption capacity and selectivity for propylene. It is also simple to synthesize, structurally stable, and easily recyclable. Obtaining high-purity propylene from propylene / propane mixtures through adsorption separation has significant application prospects in addressing energy security and addressing the high energy consumption and low efficiency of traditional industrial gas separation.

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