Method for preparing metal organic framework film

A metal-organic framework and metal technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve problems such as weak binding force and difficult film formation, and achieve the effect of easy operation and wide applicability

Inactive Publication Date: 2010-04-14
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is the technical problem that the metal-organic framework material has weak bonding force with non-metallic material carriers such as ceramics and is not easy to form a film. It provides a simple and easy-to-operate method for loading MOFs materials on a tubular carrie

Method used

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  • Method for preparing metal organic framework film
  • Method for preparing metal organic framework film

Examples

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Effect test

Embodiment 1

[0017] Example 1 Synthesis of Cu3(BTC)2 film

[0018] In a 100ml beaker, 3.75g Cu(NO 3 ) 2 Dissolve it in 12 g of water to form a solution A. In another 100 ml beaker, dissolve 0.08 g of 1,3,5-tribenzenetricarboxylate (BTC) BTC in 24 g of ethanol to form a solution B. Take the pretreated carrier, seal the bottom end of the tube with a PTFE head, then pour the A solution into the tube, and then seal the other end with a PTFE head. After sealing, put the tube into Into the reaction kettle, inject solution B, then seal the kettle and place it at 120°C for crystallization synthesis for 12 hours. The prepared Cu3(BTC)2 membrane is rinsed with deionized water / ethanol and dried in a vacuum oven at 40°C spare. The entire synthesis process must be repeated twice until the synthesized membrane is dense and continuous.

[0019] Single gas test: install the Cu3(BTC)2 membrane prepared above into the membrane separator. At room temperature, the pressure difference between the two ends of the ...

Embodiment 2

[0020] Example 2 Synthesis of MOF-5 film:

[0021] Put 0.399g Zn(NO 3 ) 2 Fully dissolve in 2.846g dimethylformamide (N,N'-dimethylformamide, DMF) to form a solution A, in another 100ml beaker, dissolve 0.0502g phthalic acid (1,4-benzenedicarboxylate, BDC) in 12.33g DMF Form B solution. (Take the pretreated carrier, seal the bottom end of the tube with a Teflon cap, then pour the A solution into the tube, and then seal the other end with a Teflon cap. After sealing, put the tube into Into the reaction kettle, inject solution B, then seal the kettle and place it at a temperature of 100°C for crystallization synthesis for 12 hours. The prepared MOF-5 membrane is rinsed with DMF and dried in a vacuum oven at 40°C for use. The entire synthesis process The synthesis should be repeated twice until the synthesized film is dense and continuous.

[0022] Single gas test: Install the prepared MOF-5 membrane above into the membrane separator. At room temperature, the pressure difference bet...

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Abstract

The invention belongs to the technical field of new material, and relates to a method for preparing a novel metal organic framework (MOFs) film and the potential application prospect thereof, in particular to the MOFs film which is continuous, compact, firm and crackles and is prepared on the surface of a porous carrier by a back diffusion method. The invention is characterized in that metal precursor of a synthetic membrane and organic ligand nutrient solution are respectively supplied from the two sides of a carrier tube (as shown); the diffusion of metal precursor nutrient solution is promoted to facilitate metal organic framework compound to crystallize and grow on the surface of the carrier; and finally, the MOFs separating film which is continuous, compact, firm and crackles and hasselective permeability for molecular mixture is obtained. The invention has the effect and advantage of solving the difficulty that the binding force between metal framework organic matter and the carrier is weak, so that the continuous and compact film is hardly formed; furthermore, the invention provides the method which is used for preparing the MOFs film as well as simple in operation and easy in control, thus initiating the precedent of preparing the MOFs film with high performance on the tubular carrier.

Description

Technical field [0001] The invention belongs to the technical field of new materials, and relates to a method for preparing a dense continuous non-cracked metal organic framework (MOFs) film on the surface of a tubular support body and applying it to gas separation. In particular, it relates to the synthesis of metal organic framework membrane by the reverse diffusion method and its application to the separation of molecular mixtures. Background technique [0002] Membrane science and technology is characterized by energy saving, cleanliness, high efficiency, and strong compatibility. It is suitable for the needs of modern industry for energy saving, raw material reuse and elimination of environmental pollution, and has become an important part of the realization of sustainable economic development strategies. Due to its excellent thermal and chemical stability and potential molecular sieving performance at the molecular level, inorganic microporous membranes can be widely used i...

Claims

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Application Information

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IPC IPC(8): B01D69/12B01D71/06
Inventor 杨建华何成贺广凤王金渠肖伟鲁金明张艳殷德宏
Owner DALIAN UNIV OF TECH
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