Micron-sized MOF-303 and preparation method thereof

A MOF-303, micron-scale technology, applied in the field of new materials, can solve the problem of uneven particle size, achieve the effect of uniform size, mild reaction conditions, and simple raw materials

Active Publication Date: 2021-10-26
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
View PDF13 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The MOF-303 reported in the current research is mostly used as a water-absorbing agent, but its particle size ranges from 500nm to 1um, and the particle size is uneven, mostly nano-scale, and the uneven particle size has great influence on the stability and stability of the material. The uniformity of the specific surface area has a great influence, which has great limitations for the development of the properties of MOF-303

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
  • Micron-sized MOF-303 and preparation method thereof
  • Micron-sized MOF-303 and preparation method thereof
  • Micron-sized MOF-303 and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Weigh 2g of 3,5-pyrazoledicarboxylic acid and dissolve it in NaOH solution (2gNaOH, 10mlH 2 O), heated and stirred at 70° C. for 10 min with a magnetic stirrer at 400 r / min.

[0047] (2) Add 2.5g of aluminum chloride precursor to the above solution, stir with a magnetic stirrer at 400r / min for 10min, and dissolve the precipitate.

[0048] (3) Put the homogeneous solution formed above into a 300ml hydrothermal reaction kettle and place it in a device with a preheating temperature of 100°C, grow under this condition for 9 hours, then cool down to 90°C, and cool down once every 30 minutes until 70°C ℃, the temperature curve is as image 3 shown.

[0049](4) After the growth is completed, turn off the heating device and allow it to cool down to room temperature.

[0050] (5) Take out the reaction precipitate and place it in a beaker, soak it with absolute ethanol for 3 days, and wash it with absolute ethanol 4 times a day.

[0051] (6) The obtained precipitated subs...

Embodiment 2

[0053] The MOF-303 white powder prepared by the embodiment is observed with a scanning electron microscope, and the obtained SEM image is as follows Figure 4 shown.

[0054] The MOF-303 white powder prepared in Example 1 is subjected to X-ray diffraction using an X-ray diffractometer, and the obtained X-ray diffraction pattern is as follows Figure 5 shown.

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
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention belongs to the technical field of new materials, and particularly relates to micron-sized MOF-303 and a preparation method thereof. The preparation method comprises the following steps: (1) mixing 3,5-pyrazoledicarboxylic acid with deionized water and a NaOH solution, and conducting heating to obtain a mixed solution a; (2) mixing an Al source with the mixed solution a, and conducting dissolving and precipitating to obtain a mixed solution b; and (3) growing the mixed solution b at a certain temperature. In the step (3), the growth is divided into the following stages: in a first stage, growth is conducted in a temperature not less than 95 DEG C and not larger than 105 DEG C; in a second stage, growth is conducted in a temperature not less than 85 DEG C and less than 95 DEG C; in a third stage, growth is conducted at a temperature no less than 75 DEG C and less than 85 DEG C; and in a fourth stage, growth is conducted in a temperature not less than 65 DEG C and less than 75 DEG C. The prepared MOF-303 material belongs to a micron-scale flaky MOF-303 material, is uniform in size and regular in shape, can be better applied to adsorption of gas and pollutants (such as various metal ions) and a Lewis acid catalyst, and can be used as a high-efficiency water absorbent and an industrial drying agent.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to a micron-sized MOF-303 and a preparation method thereof. Background technique [0002] Metal-organic frameworks (MOFs), also known as porous coordination polymers (PCPs), are two- or three-dimensional porous crystalline materials with multidimensional networks formed by metal cation salts or clusters and organic ligands in the secondary structural units Porous metal-organic frameworks. The structure of MOFs is flexible and can be tuned by changing the properties of metal cations and linkers as well as post-synthetic modifications. MOFs bridge the gap between microporous and mesoporous materials, with up to 10,000m measured by Brunauer-Emmett-Teller (BET) 2 / g ultra-high specific surface area, much higher than zeolite and activated carbon. To date, more than 20,000 MOF structures have been reported, and BASF has produced some MOFs on a ton-scale scale. The cu...

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): C08G83/00
CPCC08G83/008
Inventor 沈俊王旭湛立鄢江兵崔恒清张鑫
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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