Metal organic framework film with polymer as ligand

A metal-organic framework and polymer technology, applied in the field of membrane separation, can solve the problems of limited industrial application, unstable cost of metal-organic framework membrane materials, etc., and achieve the effects of low cost, easy amplification and good solubility.

Inactive Publication Date: 2018-06-05
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, due to factors such as the instability of metal-organic framework membrane materials and the high cost of ligand raw materials, their further industrial applications are limited to some extent.

Method used

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  • Metal organic framework film with polymer as ligand
  • Metal organic framework film with polymer as ligand
  • Metal organic framework film with polymer as ligand

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1. Preparation of film-forming raw materials:

[0038] Weigh 1.8378 grams of zinc acetate dihydrate (Zn(Ac) 2 2H 2 O) was dissolved in 10 ml of dimethyl sulfoxide (DMSO), and 0.9 g of polybenzimidazole was dissolved in 10 ml of DMSO. Add the former to the latter and mix under airtight condition and stir at room temperature for 1 hour to obtain a film-forming raw material solution.

[0039] 2. Film forming reaction:

[0040] The raw material solution prepared in step 1 was sealed and placed in a blast drying oven to naturally raise the temperature to 100° C. and react for 72 hours to obtain a film-forming solution.

[0041] 3. Squeeze coating and dry to form a film:

[0042] The surface of the film scraping machine is naturally heated to 80°C, the scraper is set to 250 microns, and the scraping speed is set to 50 mm / s. Gently push the side with glass to the other side to prepare a film, and dry it with the surface of the film scraping machine at 80°C for 24 hours. A...

Embodiment 2

[0046] 1. Weigh 0.332 gram of zinc nitrate hexahydrate (Zn(NO 3 ) 2 ·6H 2 O) was dissolved in 10 ml of dimethyl sulfoxide (DMSO), and 0.9 g of polybenzimidazole was dissolved in 10 ml of DMSO. Add the former to the latter and mix under airtight condition and stir at room temperature for 1 hour to obtain a film-forming raw material solution. Then, according to the method of Steps 2-3 of Example 1, the metal-organic framework membrane product B using the polymer as a ligand was prepared.

[0047] The X-ray diffraction pattern of the prepared product B is as follows Figure 7 As shown, with the polymer polybenzimidazole ligand (such as figure 1 ) shows that there are obvious diffraction peaks at about 10 degrees, and new peaks appear, which proves that a new substance has been formed, and the crystal form of the substance is inconsistent with polybenzimidazole itself, so it can be judged that a new Metal-organic framework membrane materials. N of product B 2 The results o...

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Abstract

The invention discloses a metal organic framework film with a polymer as a ligand. A reaction is carried out on film-forming raw materials obtained by mixing metal ions, polymer ligands and a solvent,and then the formed film is dried to obtain the metal organic framework film, wherein the film-forming raw material is a uniform mixture of the metal ions, the polymer ligands and the solvent. According to the metal organic framework film with the polymer as the ligand, the advantages of a conventional organic metal framework material and a polymer material are sufficiently combined. The metal organic framework film provided by the invention has high preparation repeatability, and the prepared product film has excellent gas separation performance, and has a wide application prospect in the field of gas separation.

Description

technical field [0001] The invention belongs to the field of membrane separation, and in particular relates to the preparation of a metal-organic framework membrane using a polymer as a ligand for gas separation. Background technique [0002] Compared with the traditional separation technology, the gas membrane separation technology has many advantages such as low energy consumption, simple equipment, and low environmental pollution. application prospects. [0003] The polymer membrane material is easy to form a film, has high gas separation performance, and is suitable for mass production. Therefore, it is one of the gas separation materials with the most industrial application value so far. However, due to the low permeation of the polymer membrane material itself, and Most polymer membrane materials swell to carbon dioxide gas, resulting in a sharp decline in their separation performance. Application is limited. [0004] Metal-organic framework materials are crystallin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30B01D53/02B01D71/06B01D67/00
CPCB01D53/02B01D67/0002B01D71/06B01D2257/504B01J20/226Y02C20/40
Inventor 杨维慎矫文美
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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