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Metal organic framework material and preparation method thereof

A metal-organic framework and reaction technology, applied in separation methods, chemical instruments and methods, and other chemical processes, can solve problems such as complex processes and high energy consumption, and achieve the effect of improving separation performance

Active Publication Date: 2022-07-29
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, C 2 h 2 with CO 2 With the same dynamic diameter, similar melting and boiling points, industrial separation technology through rectification, high energy consumption and complicated process

Method used

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  • Metal organic framework material and preparation method thereof
  • Metal organic framework material and preparation method thereof
  • Metal organic framework material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Metal-organic framework material, the chemical formula is {[Zn 2 (TPTA)(bpy)](CH 3 CN)(DMF) 2 };

[0039] The above {[Zn 2 (TPTA)(bpy)](CH 3 CN)(DMF) 2 The preparation method of } specifically comprises the following steps:

[0040] (1) Zn(NO 3 ) 3 ·6H 2 O (8 mg, 0.022 mmol), H 4 TPTA (3 mg, 0.0074 mmol), bpy (3 mg, 0.019 mmol) were dissolved in 0.5 mL CH 3 In a mixed solvent of CN and 1.5 mL of DMF, sealed in a 20 mL glass bottle to obtain a mixed reactant;

[0041] (2) After ultrasonically mixing the mixed reactants for 3 min in an ultrasonic instrument, put them in an oven at 90°C for 24 hours, and then obtain {[Zn 2 (TPTA)(bpy)](CH 3 CN)(DMF) 2 } (ZnTPTA-1).

Embodiment 2

[0043] Metal-organic framework material, the chemical formula is {[Zn 4 (TPTA) 2 (H 2 O) 2 ](EtOH)(DMF) 6 };

[0044] The above {[Zn 4 (TPTA) 2 (H 2 O) 2 ](EtOH)(DMF) 6 The preparation method of } specifically comprises the following steps:

[0045] (1) Zn(NO 3 ) 3 ·6H 2 O (8 mg, 0.022 mmol), H 4 TPTA (3 mg, 0.0074 mmol), EtOH (0.5 mL) were dissolved in 1 mL DMF and 0.5 mL HNO 3 In the mixed solvent, sealed in a 20mL glass bottle to obtain a mixed reactant;

[0046] (2) Put the mixed reactants into an oven at 105°C and let them stand for 48 hours to obtain {[Zn 4 (TPTA) 2 (H 2 O) 2 ](EtOH)(DMF) 6 } (ZnTPTA-2).

Embodiment 3

[0048] Metal-organic framework material, the chemical formula is {[Zn 5 (TPTA) (trz) 6 (H 2 O) 2 ](DMF) 3 ]};

[0049] The above {[Zn 5 (TPTA) (trz) 6 (H 2 O) 2 ](DMF) 3 ]} The preparation method specifically comprises the following steps:

[0050] (1) Zn(NO 3 ) 3 ·6H 2 O (12 mg, 0.034 mmol), H 4 TPTA (3 mg, 0.0074 mmol), trz (3 mg, 0.019 mmol) were dissolved in 1.5 mL DMF and 0.4 mL HNO 3 In the mixed solvent, sealed in a 20mL glass bottle to obtain a mixed reactant;

[0051] (2) Put the mixed reactants in an oven at 90°C and let them stand for 48h to obtain {[Zn 5 (TPTA) (trz) 6 (H 2 O) 2 ](DMF) 3 ]} (ZnTPTA-3).

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Abstract

The invention discloses a metal organic framework material. The chemical formula of the metal organic framework material is {[Zn2 (TPTA) (bpy)] (CH3CN) (DMF) 2}, {[Zn4 (TPTA) 2 (H2O) 2] (EtOH) (DMF) 6} and {[Zn5 (TPTA) (trz) 6 (H2O) 2] (DMF) 3]}. The framework material is constructed based on coordination bond self-assembly of an organic connector (Lewis base / electron donor) and a metal node (Lewis acid / electron acceptor), and has the advantages of being adjustable in structure, easy to modify, large in specific surface area and the like, so that the possibility is provided for improving the C2H2 / CO2 separation effect.

Description

technical field [0001] The invention relates to the technical field of metal organic frameworks, and more particularly to a metal organic framework material and a preparation method thereof. Background technique [0002] High purity C 2 H 2 It is the basic raw material for industrial related products such as oxyacetylene flame, plastics, synthetic rubber, acetaldehyde, etc. It is mainly produced by hydrocarbon steam cracking method and methane partial combustion method. This production process usually produces gas impurities, including C 2 H 4 , CO 2 and CH 4 . Since these gases have similar physical properties and kinetic diameters, this undoubtedly improves the selective capture of one gas (such as C 2 H 2 ) difficulty level. C 2 Separation and purification of mixtures is a highly energy-intensive process in the petrochemical industry. current stage C 2 H 2 The low temperature distillation and pressure swing adsorption purification methods have high energy cons...

Claims

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Application Information

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IPC IPC(8): C08G83/00B01J20/26B01J20/30B01D53/02
CPCC08G83/008B01J20/226B01D53/02B01D2257/504B01D2256/24
Inventor 王冬梅周培培冯梦
Owner ZHEJIANG NORMAL UNIVERSITY
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