Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Polyacid-based metal organic framework crystal material and preparation method thereof

A technology of organic frameworks and crystal materials, applied in chemical instruments and methods, catalyst activation/preparation, organic compound/hydride/coordination complex catalysts, etc., can solve the problems of poor catalytic activity and difficulty, and achieve the goal of maintaining catalytic active effect

Inactive Publication Date: 2018-02-23
HARBIN UNIV OF SCI & TECH
View PDF2 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the difficulty of synthesizing polyacid-based metal-organic framework crystal materials with nanopores using the prior art and the problem of poor catalytic activity of traditional polyacids as catalysts, and to provide a flexible ligand assembly with nanopores Polyacid-based metal-organic framework crystal material and preparation method thereof

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
  • Polyacid-based metal organic framework crystal material and preparation method thereof
  • Polyacid-based metal organic framework crystal material and preparation method thereof
  • Polyacid-based metal organic framework crystal material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0026] Embodiment 1: This embodiment is a polyacid-based metal-organic framework crystal material with nanopores assembled by flexible ligands. The chemical formula is {[Cu I (btpe) 2 ][Cu II 2 (H 2 O) 2 (btpe) 2 ][BW 12 o 40 ]}·2H 2 O, where btpe is 1,5-bistriazole-pentane; crystal system is triclinic; space group is P `1; unit cell parameters are a=89.225(5), b=74.334(5), g =70.858(5), a=12.404(5) Å, b=12.743(5) Å, c=13.447(5) Å, z=1.

[0027] {[Cu described in this embodiment mode I (btpe) 2 ][Cu II 2 (H 2 O) 2 (btpe) 2 ][BW 12 o 40 ]}·2H 2 Cu in O I The valence is +1, the coordination mode is 2 coordination, Cu II The valence is +2, and the coordination mode is 6 coordination.

[0028] Compared with the prior art, this embodiment has the following characteristics:

[0029] The present invention adopts a simple one-step hydrothermal synthesis method to successfully prepare a polyacid with nanopores assembled by flexible ligands by using 1,5-bistriazole...

specific Embodiment approach 2

[0030] Embodiment 2: This embodiment is a method for preparing a polyacid-based metal-organic framework crystal material with nanopores assembled by flexible ligands, which is completed in the following steps:

[0031] 1. Prepare a reaction solution with a pH value of 4.0: Dissolve borotungstic acid, copper acetate, and 1,5-bistriazole-pentane organic ligand into deionized water to obtain a reaction solution; adjust the pH value of the reaction solution to 4.0, to obtain a pH value of 4.0 reaction solution;

[0032] The molar ratio of borotungstic acid to metal copper salt described in step 1 is: 0.1: (0.2-1);

[0033] The molar ratio of the borotungstic acid described in step 1 to the tetrazolium-containing organic ligand is: 0.1: (0.2-0.5);

[0034] The volume ratio of the amount of borotungstic acid described in step 1 to distilled water is: 0.1mmol: (20ml-35ml);

[0035] 2. Add the reaction solution with a pH value of 4.0 into a polytetrafluoroethylene reactor, react at ...

specific Embodiment approach 3

[0039] Embodiment 3: The difference between this embodiment and Embodiment 2 is that the metal copper salt described in step 1 is copper acetate, copper nitrate or copper chloride. Others are the same as in the second embodiment.

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

No PUM Login to View More

Abstract

The invention provides a polyacid-based metal organic framework crystal material and a preparation method thereof and relates to a polyacid-based metal organic framework crystal material with nano porous channels. The invention aims at solving the problems that the polyacid-based metal organic framework material synthesized by adopting the prior art generally has a single porous channel, the finally obtained material does not have the porous channels after a polyacid molecule is immobilized, and therefore, the catalytic activity of the material is low. A chemical formula of the designed and developed flexible ligand assembled polyacid-based metal organic framework material with the nano porous channels is {[CuI(btpe)2][CuII2(H2O)2(btpe)2][BW12]40}}.2H2O. The preparation method comprises the following steps: dissolving borotungstic acid, copper acetate and 1,5-bis(triazole)-pentane into deionized water, regulating pH value, and then carrying out reaction for 3 days at the temperature of160 DEG C. By carrying out the preparation method provided by the invention, the flexible ligand assembled polyacid-based metal organic framework crystal material with the nano porous channels can beobtained.

Description

technical field [0001] The invention relates to a flexible ligand-assembled polyacid-based metal-organic framework crystal material with nanopores. Background technique [0002] Polyoxometalates (POMs for short) is the abbreviation of polyoxometalates, which is an important part of contemporary inorganic chemistry. Compared with traditional solid acid catalysts, polyoxometalates have higher catalytic activity, and the catalytic chemical reaction conditions are generally It has become a new type of green catalyst due to its mild nature, low toxicity, and few catalytic by-products, and has received extensive attention and in-depth research. Polyacids have excellent redox properties and Brönsted acid properties, and their composition elements are adjustable. Its own oxidation-reduction potential is easy to control. At the same time, due to the "pseudo-liquid phase" reaction field of polyacid, the reaction can not only be carried out on the surface, but also inside the bulk phas...

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): B01J31/22B01J27/188B01J35/10B01J37/08
CPCB01J27/188B01J31/34B01J37/08B01J35/33B01J35/60
Inventor 庞海军沈清波马慧媛张春晶
Owner HARBIN UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com