MOFs (Metal-Organic Frameworks) with ph stability as well as preparation method and application of MOFs

A metal-organic framework and stable technology, applied in the direction of separation methods, zinc organic compounds, chemical instruments and methods, etc., can solve the problems of limited application, instability, poor thermal stability and acid-base stability of MOFs, and achieve good acid-base The effect of stability, low cost and good separation effect

Inactive Publication Date: 2014-11-19
NANKAI UNIV
View PDF0 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, a large number of MOFs with gas adsorption and separation properties have been synthesized and reported, but due to the poor thermal stability and acid-base stability of most MOFs, they are unstable in air, which limits their applications.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • MOFs (Metal-Organic Frameworks) with ph stability as well as preparation method and application of MOFs
  • MOFs (Metal-Organic Frameworks) with ph stability as well as preparation method and application of MOFs
  • MOFs (Metal-Organic Frameworks) with ph stability as well as preparation method and application of MOFs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0019] A metal-organic framework material stable to acid and alkali, the chemical formula is {[Zn 2.5 (nbta)(trz) 2 (H 2 O)] 3H 2 O} n , where: n is a natural number from 1 to positive infinity, where nbta is 5-nitro-1,2,3-benzenetricarboxylate ion, trz is 1H-1,2,4-triazole; the metal organic The frame material is made of transition metal Zn 2+ A three-dimensional network structure formed by ions and organic ligands through coordination bonds or intermolecular forces, in which the organic ligands are 5-nitro-1,2,3-benzenetricarboxylic acid and 1H-1,2,4-triazine azole; the three-dimensional network structure contains three kinds of Zn with different coordination modes 2+ Ions, the three N atoms of the 1H-1,2,4-triazole ligand are respectively coordinated with Zn1, Zn2, and Zn3 to form a two-dimensional surface, and the two-dimensional surface is 5-nitro-1,2, The 3-trimesic acid ligand is linked into a c A frame structure with pores in the direction; free guest water mole...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
adsorption capacityaaaaaaaaaa
adsorption capacityaaaaaaaaaa
Login to view more

Abstract

The invention relates to MOFs (Metal-Organic Frameworks) with ph stability. The chemical formula of the MOFs is {[Zn2.5(nbta)(trz)2(H2O)].3H2O}n, wherein the nbta is 5-nitro-1,2,3-benzene tricarboxylic acid radical ions, and trz is 1H-1,2,4-triazole; the preparation method comprises the following steps: adding zinc nitrate, the 5-nitro-1,2,3-benzene tricarboxylic acid radical ions and the 1H-1,2,4-triazole into a water solution, using anhydrous sodium carbonate to regulate the PH value, reacting for 72 h at the temperature of 80 DEG C, conducting filtration and washing, and obtaining the target product; the MOFs can be used for selective adsorption separation of the CO2/N2. The MOFs have the advantages that the preparation technology of the MOFs is simple, the operation is easy, the cost is low, the period is short, the productivity is high, the prepared MOFs have better ph stability and further have better selective adsorption separation performance on the CO2/N2.

Description

technical field [0001] The invention relates to the technical field of metal organic framework materials, in particular to an acid-base stable metal organic framework material and its preparation method and application. Background technique [0002] Climate warming caused by greenhouse gas emissions is a serious global environmental problem facing mankind. CO 2 The gas contributes the most to warming and becomes the primary greenhouse gas to be solved. According to the forecast of the U.S. Department of Energy, reduce CO by more than 60% globally 2 emissions to curb climate change. capture and separation of CO 2 The main methods are: chemical solvent absorption method, solid absorbent adsorption method and membrane separation method. Metal-organic frameworks (MOFs), as a new type of porous material, can be used in CO 2 Storage and CO 2 / N 2 The nature of the separation aspect has received increasing attention. Metal-organic frameworks are porous crystalline materia...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C07F3/06B01J20/22B01J20/30B01D53/02
CPCY02C20/40Y02P20/151
Inventor 师唯张晓平程鹏
Owner NANKAI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap