Preparation method for nitrogen-rich ZMOF type metal-organic framework porous material

A metal-organic framework, porous material technology, applied in the directions of alkali metal compounds, chemical instruments and methods, alkali metal oxides/hydroxides, etc., can solve the problems of structural damage, low adsorption capacity and selectivity, and poor chemical stability. , to achieve the effect of good physical and chemical stability

Active Publication Date: 2015-07-15
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
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Problems solved by technology

[0003] Metal-organic framework porous materials (Metal-Organic Frameworks, MOF) have a large specific surface area and permanent porosity, which can be widely used in the fields of catalysis, adsorption and separation. 2 It has a certain selective adsorption performance and can realize CO 2 Gas capture and separation, however, its adsorption capacity and selectivity are still low. In addition, its chemical stability is poor, especially sensitive to water, and exposure to air may lead to structural damage. These factors lead to metal-organic framework porous materials in Efficient capture and separation of CO 2 Gas applications are limited

Method used

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  • Preparation method for nitrogen-rich ZMOF type metal-organic framework porous material
  • Preparation method for nitrogen-rich ZMOF type metal-organic framework porous material
  • Preparation method for nitrogen-rich ZMOF type metal-organic framework porous material

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Embodiment 1

[0018] The specific conditions for the synthesis of the novel nitrogen-enriched ZMOF metal-organic framework porous material prepared in the present invention will be further described in detail below. In this example, the synthesis conditions for the nitrogen-enriched ZMOF type metal-organic framework porous material are as follows:

[0019] The organic ligand nitrogen-containing organic compound used in the reaction is CH 3 N 5 (0.51g);

[0020] Metal zinc salt is zinc nitrate hexahydrate (Zn(NO 3 ) 2 ●6H 2 O) (0.895g);

[0021] The organic solvent was N,N-dimethylformamide (DMF) (30ml).

[0022] use as figure 1 Shown synthetic route, concrete preparation process is as follows:

[0023] Measure 15ml of DMF in a polytetrafluoroethylene high-temperature reaction kettle, and sequentially weigh 0.51g of nitrogen-containing organic compound CH 3 N 5 With 0.895g zinc nitrate hexahydrate (Zn(NO 3 ) 2 ●6H 2 O), pour it into the reaction kettle, add 15ml of DMF, stir eve...

Embodiment 2

[0032]In this example, the preparation method of the novel nitrogen-enriched ZMOF type metal-organic framework porous material is basically the same as that of Example 1, except that CH 3 N 5 4H 2 O instead of CH 3 N 5 , the nitrogen-enriched ZMOF type metal-organic framework porous material with regular morphology can also be obtained. This material has certain thermodynamic and chemical stability, and is resistant to CO 2 The gas has a strong selective adsorption capacity, so it can 2 The field of capture and separation technology, the separation of organic molecules, the packing of chromatographic packed columns, and the preparation of membrane materials such as gas separation membranes, liquid separation membranes and nanocomposite films have good application prospects.

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Abstract

The present invention provides a preparation method for a novel nitrogen-rich ZMOF type metal-organic framework porous material. According to the preparation method, an azole-rich compound is adopted as a reaction ligand, and the azole-rich compound and a Zn<2+>-containing soluble zinc salt are subjected to a solvothermal reaction in an organic solvent to obtain a nitrogen-rich ZMOF type metal-organic framework porous material; and then washing, evacuation and high temperature activation are performed to remove the organic solvent from the nitrogen-rich ZMOF type metal-organic framework porous material. The nitrogen-rich ZMOF type metal-organic framework porous material prepared by the method has characteristics of regular crystal structure, uniform pore size distribution, good physical and chemical stability, and excellent selective CO2 absorption capacity, such that the method has good application prospects in technical fields of CO2 capture separation, organic molecule separation, and the like.

Description

technical field [0001] The invention relates to the design and synthesis of metal organic framework materials and CO 2 Capture technical fields. In particular, it relates to the preparation of a novel nitrogen-rich ZMOF-type metal-organic framework porous material and its application in CO 2 Applications in the field of capture and separation, especially for CO in power plants, fertilizer plants and other industrial gases 2 capture and separation. Background technique [0002] With the rapid development of industry, CO 2 emissions are increasing, and the world emits CO into the atmosphere every year 2 The amount reaches 1.85×10 10 Tons, and increasing at a rate of 4% per year, have caused a great negative effect on the global climate and ecological balance, leading to serious environmental and ecological problems, which will threaten the survival of human beings. At the same time, CO 2 It is an important carbon resource. In order to improve the living environment of h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30
CPCY02C10/08Y02C20/40
Inventor 孔春龙闫秋菊曹鲁杰陈亮
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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