Preparation of metal-organic cage complex mixed matrix membrane for gas separation

• Main Authors: LIU TONGXIN, ZHANG RUILI, XIE YABO
• Format: Patent
• Language: Chinese; English
• Published: 26.08.2022
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The invention discloses preparation of a metal-organic cage complex mixed matrix membrane for gas separation, and belongs to the field of material science and the field of gas separation. The mixed matrix membrane comprises a high-molecular polymer, and the high-molecular polymer and a metal-organic cage complex are prepared into a membrane. The preparation method comprises the following steps: dissolving a metal-organic cage complex into an organic solvent, and carrying out ultrasonic treatment until the metal-organic cage complex is dissolved to obtain a metal-organic cage complex solution; weighing a polymer, adding the polymer into the solution, and carrying out ultrasonic treatment until the polymer is dissolved to obtain a mixed matrix membrane casting solution; and pouring the mixed matrix membrane casting solution into a membrane preparation watch glass, and volatilizing the solvent to prepare the metal-organic cage complex mixed matrix membrane. The problem of interface defects in a mixed matrix memb