膜科学与技术

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Preparation of UiO-66 gas separation membrane by gel modification combined with homologous metal induction

Authors： Ding Xiaofan, Lu Jinming, Yang Jianhua, Liu Yi

Units： State Key Laboratory of Fine Chemicals，Institute of Adsorption and Inorganic Membrane，Dalian University of Technology，Dalian 116024，China

KeyWords： UiO-66 membrane; gas separation; gel modification; homologous metal induction; CO2 separation

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2023,43(4):28-36

Abstract：

The metal-organic framework UiO-66 is an ideal membrane separation material with high porosity, adjustable pore size, excellent chemical and thermal stability, and has high application value in the field of gas membrane separation. In this paper, for the difficulty of preparing continuous and complete UiO-66 membranes on microporous carriers, a combination of gel-modified support and homologous metal oxide induction was used to prepare dense UiO-66 membranes on microporous alumina support, and the effects of Zr-sol and synthesis solution on the membrane formation were investigated by SEM, XRD, EDX, etc., and compared with the membrane formation process by traditional seed growth method. The experimental results showed that the optimal content of Zr-sol was 0.16 g/mL, the optimal molar ratio of synthesis solution acetic acid was 1:100, the permeation of H2 was 6.20×10-8 mol/(m2·s·Pa) at 0.1 MPa, and the ideal selectivity of H2/CO2, H2/N2, and H2/CH4 were 20.79, 2.42, and 2.02, respectively

Funds：

国家自然科学基金项目（21776031）。

AuthorIntro：

丁小凡（1997-），男，山东潍坊人，硕士生，从事MOF膜的制备与应用

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