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

Porous zinc-based MOF material with high thermal stability, and preparation method and application thereof

A high thermal stability, zinc-based technology, applied in the field of advanced porous materials, can solve the problems of unpredictable topological structure performance and poor thermal stability of MOF, and achieve the effect of mild preparation conditions and high thermal stability

Active Publication Date: 2021-07-27
CHONGQING NORMAL UNIVERSITY
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the microscopic reaction process, topological structure, and performance are difficult to predict, and most porous MOFs have poor thermal stability, it is a challenging task to prepare porous MOFs with novel topological structures and high thermal stability.
On the other hand, flexible or semi-rigid organofunctional ligands generally only produce non-porous or interpenetrating dense structures, so the preparation of porous MOFs based on semi-rigid organofunctionality is a challenging subject.

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
  • Porous zinc-based MOF material with high thermal stability, and preparation method and application thereof
  • Porous zinc-based MOF material with high thermal stability, and preparation method and application thereof
  • Porous zinc-based MOF material with high thermal stability, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Take the material according to the following specific mass or volume: H 3 tcpb (12.1mg, 0.025mmol), bpeb (8.5mg, 0.03mmol), Zn (NO 3 ) 2 ·6H 2 O (30.0 mg, 0.1 mmol), CH 3 CN (5mL), H 2 O (5mL), HNO 3 solution (20 μL, 7 mol / L, 0.14 mmol). Put the above material in 25mL polytetrafluoroethylene liner, stir for about 0.5h, seal it in a stainless steel reaction kettle, place the reaction kettle in an electric blast oven and raise the temperature to 140°C, after 4 days of reaction, cool naturally to room temperature, A bulk crystal sample was obtained, which was filtered from the mother liquor, washed with distilled water, and dried naturally in air at room temperature.

[0037] To the prepared crystal sample, carry out powder diffraction test with Shimadzu XRD-6100 type X-ray diffractometer (see image 3 , abscissa—angle; ordinate—diffraction intensity), the peaks of the test spectrum and the peaks of the crystal structure simulation spectrum (software Mercury) can be...

Embodiment 2

[0053] Take the material according to the following specific mass or volume: H 3 tcpb (12.1mg, 0.025mmol), bpeb (8.5mg, 0.03mmol), Zn(NO 3 )2 ·6H 2 O (30.0 mg, 0.1 mmol), CH 3 CN (5mL), H 2 O (5mL), HNO 3 solution (10 μL, 7 mol / L, 0.07 mmol). Put the above material in 25mL polytetrafluoroethylene liner, stir for about 10min, seal it in a stainless steel reaction kettle, place the reaction kettle in an electric blast oven and raise the temperature to 160°C, react for 4 days, and naturally cool to room temperature to obtain Block crystal samples were filtered from the mother liquor, washed with distilled water, and dried naturally in air at room temperature.

[0054] Product powder X-ray diffraction characterization, obtains data similar to embodiment 1 (see image 3 ). It shows that the crystal structure prepared by Example 2 does not change, and the product has a higher purity. This embodiment is repeated many times, and Zn is actually obtained 3 -The quality of MOF i...

Embodiment 3

[0056] Take the material according to the following specific mass or volume: H 3 tcpb (12.1mg, 0.025mmol), bpeb (8.5mg, 0.03mmol), Zn(NO 3 ) 2 ·6H 2 O (30.0 mg, 0.1 mmol), CH 3 CN (5mL), H 2 O (5mL), HNO 3 (30 μL, 7 mol / L, 0.21 mmol). Put the above material in 25mL polytetrafluoroethylene lining, stir for about 20min, seal it in a stainless steel reaction kettle, place the reaction kettle in an electric blast oven and raise the temperature to 120°C, react for 4 days, and naturally cool to room temperature to obtain Block crystal samples were filtered from the mother liquor, washed with distilled water, and dried naturally in air at room temperature.

[0057] Product powder X-ray diffraction characterization, obtains data similar to embodiment 1 (see image 3 ). It shows that the crystal structure prepared by Example 3 does not change, and the product has a higher purity. This embodiment is repeated many times, and Zn is actually obtained 3 -The mass of MOF is kept at...

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
Densityaaaaaaaaaa
Login to View More

Abstract

The invention provides a porous zinc-based MOF material with high thermal stability, and a preparation method and application thereof. The chemical general formula is [Zn3(tcpb)2(bpeb)]n, the porous zinc-based MOF material belongs to a triclinic system, the space group is P-1, the cell parameter component tcpb3 is obtained by removing three protons from semi-rigid ternary organic carboxylic acid H3tcpb, and H3tcpb is as shown as formula I; and the component bpeb is shown as formula II. The triple-interspersed porous MOF material provided by the invention is high in thermal stability and can stably exist in solvents such as water, acetonitrile and the like; the preparation conditions are mild, and the highest yield can reach 76.3%; the theoretical porosity is 31.3%, the calculated density is 1.173 g / cm<3>, and the material is a typical low-density porous material; and as a luminescent material, the material can be used for identification of a common high-boiling-point solvent DMA and qualitative and quantitative fluorescence detection of F< 3+>.

Description

technical field [0001] The invention belongs to the field of advanced porous materials, in particular to a highly thermally stable triple interpenetrating porous zinc-based metal-organic framework Zn 3 -MOF new materials and their preparation methods and applications. Background technique [0002] Generally speaking, porous materials are solid substances with gaps, such as sponges, crater zeolites, etc.; limited by natural resources, artificial synthesis has become an important source of porous new materials. Since the middle of the last century, the inorganic porous Materials (such as silicate molecular sieves, aluminum phosphate AlPO-5, etc.), metal-organic frameworks (Metal-Organic Frameworks, MOFs, such as MOF-5) and porous organic framework materials (Porous Organic Frameworks, POFs) stage, these new materials It has been extensively researched and applied in gas storage, catalytic reaction, sensor, drug sustained release, etc. [0003] The most favored MOFs are organ...

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
IPC IPC(8): C08G83/00C09K11/06G01N21/64
CPCC08G83/008C09K11/06G01N21/6428G01N2021/6432C09K2211/1425C09K2211/1433C09K2211/1466
Inventor 黄坤林夏刚陈新张愿胡敏吴越
Owner CHONGQING NORMAL UNIVERSITY
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