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Metal organic framework material with CO2 preferential adsorption separation function and preparation method of metal organic framework material

A metal-organic framework, adsorption and separation technology, applied in the field of inorganic and material chemistry science, to achieve the effect of cheap raw materials, increased adsorption capacity, and mild reaction conditions

Inactive Publication Date: 2015-01-07
NORTHWEST UNIV(CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are only few reports on metal-pyrazole-carboxylic acid framework materials, and the synthesis of related compounds is very important and urgent.

Method used

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  • Metal organic framework material with CO2 preferential adsorption separation function and preparation method of metal organic framework material
  • Metal organic framework material with CO2 preferential adsorption separation function and preparation method of metal organic framework material
  • Metal organic framework material with CO2 preferential adsorption separation function and preparation method of metal organic framework material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] As shown in formula (I), a kind of CO 2 Metal-organic framework materials for selective adsorption separation, [Co 8.5 (μ 4 -O)(bpdc) 3 (bpz) 3 (Hbpz) 3 ]·6(DMF)·9(CH 3 OH)·15(H 2 O), formula (I);

[0036] Among them, the bpdc, Hbpz and bpz structural formulas are as follows:

[0037]

[0038]In the formula, bpdc is the negative dianion ligand of 4,4'-biphenyl dicarboxylic acid, Hbpz and bpz are respectively 3,3',5,5'-tetramethyl-1,1'-dihydro-4, Negative monovalent and negative dianionic ligands of 4'-bipyrazole, DMF is N,N-dimethylformamide.

[0039] This example has CO 2 A method for preparing a metal-organic framework material for selective adsorption separation, comprising the steps of:

[0040] Step (1), 0.19mmol cobalt perchlorate, 0.11mmol 4,4'-biphenyl dicarboxylic acid and 0.21mmol3,3',5,5'-tetramethyl-1,1'-dihydro-4, 4'-bipyrazole was added to a mixed solvent made of 4mL N,N-dimethylformamide and 5mL methanol at a molar ratio of 1.9:1.1:2.1 and s...

Embodiment 2

[0045] As shown in formula (I), a kind of CO 2 Metal-organic framework materials for selective adsorption separation, [Co 8.5 (μ 4 -O)(bpdc) 3 (bpz) 3 (Hbpz) 3 ]·6(DMF)·9(CH 3 OH)·15(H 2 O), formula (I);

[0046] In the formula, bpdc is the negative dianion ligand of 4,4'-biphenyl dicarboxylic acid, Hbpz and bpz are respectively 3,3',5,5'-tetramethyl-1,1'-dihydro-4, Negative monovalent and negative dianionic ligands of 4'-bipyrazole, DMF is N,N-dimethylformamide.

[0047] This example has CO 2 A method for preparing a metal-organic framework material for selective adsorption separation, comprising the steps of:

[0048] Step (1), 0.21mmol cobalt perchlorate, 0.09mmol 4,4'-biphenyl dicarboxylic acid and 0.19mmol3,3',5,5'-tetramethyl-1,1'-dihydro-4, 4'-bipyrazole was added to a mixed solvent made of 6mL N,N-dimethylformamide and 4mL methanol at a molar ratio of 2.1:0.9:1.9 and stirred evenly to obtain a mixed solution;

[0049] In step (2), the mixture obtained in ste...

Embodiment 3

[0053] As shown in formula (I), a kind of CO 2 Metal-organic framework materials for selective adsorption separation, [Co 8.5 (μ 4 -O)(bpdc) 3 (bpz) 3 (Hbpz) 3 ]·6(DMF)·9(CH 3 OH)·15(H 2 O), formula (I);

[0054] In the formula, bpdc is the negative dianion ligand of 4,4'-biphenyl dicarboxylic acid, Hbpz and bpz are respectively 3,3',5,5'-tetramethyl-1,1'-dihydro-4, Negative monovalent and negative dianionic ligands of 4'-bipyrazole, DMF is N,N-dimethylformamide.

[0055] Said with CO 2 Metal-organic frameworks for selective adsorption separation are based on such figure 2 The three-dimensional frameworks of two metal-pyrazole-carboxylic acid cluster units shown in (a) and (b) contain interpenetrating three-dimensional pore systems such as image 3 As shown, the specific surface area reaches 2020m 2 / g.

[0056] This example has CO 2 A method for preparing a metal-organic framework material for selective adsorption separation, comprising the steps of:

[0057] St...

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Abstract

The invention provides a novel metal organic framework material with a CO2 preferential adsorption separation function and a preparation method of the metal organic framework material and belongs to the technical field of chemical sciences of inorganic and organic materials. The preparation method comprises the following steps: dissolving raw materials, namely cobalt perchlorate hydrate, 4,4'-diphenyldicarboxylic acid and 3,3',5,5'-tetramethyl-1,1'-dihydro-4,4'-dipyrazol into an organic solvent; and then reacting at 130 DEG C for 72 hours to obtain the product. According to the invention, a rarely-used method for mixing pyrazol-carboxylic acid difunctional coordinating group is adopted so as to obtain the stable novel metal organic framework material. The preparation process of the material is simple, simple and convenient to operate and low in cost; and the material has high specific surface area and good stability, is especially suitable for high preferential adsorption on CO2 and can be applied to separation and capturing of the CO2 in industrial waste gas.

Description

technical field [0001] The invention belongs to the field of inorganic and material chemistry science and technology, and specifically relates to a CO 2 Metal-organic framework materials with highly selective adsorption and methods for their preparation. Background technique [0002] CO 2 Capture and storage is an important means to reduce carbon emissions to the atmosphere, and has been included in the high-tech strategies of many countries. In the case of the absolute dominance of coal-fired use in my country, reducing carbon emissions is particularly important. Some other common gaseous fuels, such as natural gas, water gas reformed gas, in addition to containing CH 4 or H 2 In addition, it also contains a certain amount of CO 2 , which reduces the calorific value of the fuel, so CO 2 Removal is necessary. Commonly used CO 2 Separation and capture methods include amine absorption method, membrane separation method and adsorption method. The disadvantage of the am...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30B01D53/02
CPCB01D53/02B01D2253/204B01J20/226B01J20/28066Y02C20/40
Inventor 侯磊贾丽娜王海华
Owner NORTHWEST UNIV(CN)
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