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Method for preparing metal organic frame supported film

A metal-organic framework and membrane-supporting technology, which is applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc. , simplifies the process of film making, and has a wide range of effects

Active Publication Date: 2010-12-15
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing a metal-organic framework-supported film in order to solve the technical problem that the binding force between the metal-organic framework and the inorganic support is weak and difficult to form a film

Method used

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  • Method for preparing metal organic frame supported film
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  • Method for preparing metal organic frame supported film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Adopt the method of the present invention to prepare MIL-53 film and its characterization

[0034] Polish one side of the flat alumina support body smooth, then clean it, soak it in 5% dilute nitric acid and 5% dilute sodium hydroxide solution for 2 hours each, rinse it with deionized water, and dry it. Weigh 0.5g terephthalic acid (H 2 BDC) was poured into 35ml of distilled water and fully stirred, then poured into a 50ml hydrothermal reaction kettle, and put the support body at the same time. Seal the reaction kettle and place it in an oven at 200°C for 20 hours of reaction, then take it out, wash the support body with the seed crystal layer with distilled water after cooling, then put it in the oven at 100°C and dry it to obtain the support body with the seed crystal layer. spare.

[0035] Weigh 1.0g Al(NO 3 ) 3 9H 2 O and 0.2g H 2 BDC was dissolved in 25 ml of deionized water and stirred well, and this solution was used as a mother solution for the synthesis o...

Embodiment 2

[0040] Adopt the method of the present invention to prepare MIL-96 film and its characterization

[0041] Polish one side of the flat alumina support body smooth, then clean it, soak it in 5% dilute nitric acid and 5% dilute sodium hydroxide solution for 2 hours each, rinse with deionized water and dry. Weigh 0.3g isophthalic acid (H 3 BTC) was poured into 35ml of distilled water and fully stirred, then poured into a 50ml hydrothermal reaction kettle, and simultaneously put into a support body. Seal the reaction kettle and place it in an oven at 220°C for 20 hours of reaction, then take it out, wash the support body with the seed crystal layer with distilled water after cooling, and then put it in the oven at 100°C to dry to obtain the support body with the seed crystal. spare.

[0042] Weigh 1.0g Al(NO 3 ) 3 9H 2 O and 0.2g H 3 BTC was dissolved in 20 ml of deionized water and stirred well, and this solution was used as a mother solution for the synthesis of membranes. ...

Embodiment 3

[0046] Adopt the method of the present invention to prepare MIL-122 film and its characterization

[0047] One side of the flat gallium oxide support was polished smooth, then cleaned, soaked in 5% dilute nitric acid and 5% dilute sodium hydroxide solution for 2 hours each, rinsed with deionized water, and dried. Weigh 0.8g

[0048] 1,4,5,8-naphthalene tetracarboxylic acid (H 4 ntc) into 30ml of distilled water and fully stirred, then poured into a 50ml hydrothermal reaction kettle, and put the support body at the same time. Seal the reaction kettle and place it in an oven at 210°C for 24 hours to react, take it out, wash the support body with the seed crystal layer with distilled water after cooling, and then put it in the oven at 100°C to dry to obtain the support body with the seed crystal layer. spare.

[0049] Weigh 0.45g Ga(NO 3 ) 3 ·xH 2 O and 0.28g H 4 NTC was dissolved in 15ml of deionized water and stirred thoroughly, and this solution was used as the mother s...

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Abstract

The invention relates to a method for preparing a metal organic frame supported film. The method comprises the following steps of: reacting a metal source provided by an inorganic supporting body with an organic ligand so as to generate a layer of crystal seeds on the surface of the supporting body; and preparing a continuous film layer through a secondary reaction. The method integrates a synthetic process and a coating process of the crystal seeds, and the crystal seeds generated through an in-situ chemical reaction are evenly distributed on the surface of the supporting body and have strong bonding force with the supporting body, and thus, a metal organic frame supported film with good integrity and high stability can be prepared successfully. The method can effectively solve the problem that a metal organic frame material can hardly form a film on the inorganic supporting body. The filming method of the invention has important meaning to the mass preparation and the practical application of the metal organic frame supported film.

Description

technical field [0001] The invention belongs to the technical field of new functional materials, and in particular relates to a method for preparing a metal-organic framework supporting film by using an inorganic support body to participate in a chemical reaction to form a seed layer. Background technique [0002] Membrane separation technology has the characteristics of high separation efficiency, low energy consumption, and is especially easy to combine with catalytic reactions and other process combinations. It has developed rapidly in recent decades and has become a key solution to the energy, resources, and environment issues facing contemporary humans. It is one of the important common technologies supporting sustainable development. Inorganic microporous membranes have important application prospects in chemical, biological, pharmaceutical and environmental protection fields due to their good thermal and chemical stability and molecular-scale sieving performance, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/02B01D71/06B01D69/12B01D67/00
Inventor 金万勤董学良胡耀心南江普徐南平
Owner NANJING UNIV OF TECH
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