Core-shell type MOFs composite particles and preparation method and application thereof

A composite particle and core-shell technology, applied in the direction of microsphere preparation, separation methods, chemical instruments and methods, etc., can solve the problems of complicated steps, achieve the effects of wide application range, overcome limitations, and low wear rate

Inactive Publication Date: 2017-01-04
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The core-shell MOFs composite particles can overcome the defects of complicated steps in the traditional chemical composite method, and adopt the molding composite integration technology, the process is simple, and it is convenient for industrial application

Method used

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  • Core-shell type MOFs composite particles and preparation method and application thereof
  • Core-shell type MOFs composite particles and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment provides a method for preparing core-shell type MOFs composite particles, which includes the following steps:

[0027] Put 100g of alumina powder into a ceramic crucible and mix, drop into it 200ml of dilute nitric acid solution with a mass percentage concentration of 15wt%, stir evenly with a glass rod to obtain a wet dough, and put the wet dough into a extrusion molding machine Extrude the strip, then put the strip-shaped product into the traditional Chinese medicine pellet machine to granulate and shape, and obtain spherical particles with a diameter of 2mm; put the spherical particles into a muffle furnace after shaping, at a rate of 2-6°C / min The temperature was raised to 120°C, and then calcined at a high temperature of 120°C for 5 hours to obtain spherical cores.

[0028] Soak the above-mentioned cores evenly in a dextrin solution with a concentration of 10% by mass, put them into the drum of a traditional Chinese medicine pill making machine that...

Embodiment 2

[0033] This embodiment provides a method for preparing core-shell type MOFs composite particles, which includes the following steps:

[0034] The core was prepared as described in Example 1.

[0035] Soak the above-mentioned core in a starch solution with a mass percentage concentration of 10% evenly, put it into the drum of the traditional Chinese medicine pill making machine that has been added with HKUST-1, and roll at a speed of 90r / min for 30min, then repeat the steps of soaking and rolling, A shell with a thickness of 0.6mm is formed on the surface of the core, and then the obtained particles are put into a vacuum drying oven and vacuum-dried at 180°C for 12 hours to prepare core-shell MOFs composite particles. The radial crushing strength, The results of wear resistance and BET specific surface area are shown in Table 1.

[0036] The core-shell MOFs composite particles can be directly applied to industrial fields such as gas adsorption separation, gas storage, drug susta...

Embodiment 3

[0038] This embodiment provides a method for preparing core-shell type MOFs composite particles, which includes the following steps:

[0039] The core was prepared as described in Example 1.

[0040] Soak the above-mentioned core in the mixed solution of starch and dextrin with a mass percentage concentration of 20% evenly, put it into the drum of the traditional Chinese medicine pill making machine that has been added with HKUST-1, roll it at a speed of 90r / min for 30min, and repeat the soaking and rolling steps to form a shell with a thickness of 0.6 mm on the surface of the core, and then put the obtained particles into a vacuum drying oven and vacuum-dry them at 180 ° C for 12 hours to prepare core-shell MOFs composite particles. The results of crush strength, wear resistance and BET specific surface area are shown in Table 1.

[0041] The core-shell MOFs composite particles can be directly applied to industrial fields such as gas adsorption separation, gas storage, drug ...

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Abstract

The invention relates to core-shell type MOFs composite particles and a preparation method and application thereof. The preparation method of the core-shell type MOFs composite particles includes the following steps that a porous material and a molding promoter are mixed, wet granulating and calcining are carried out, and spherical cores are obtained; the cores are soaked with a binder solution, the cores are subjected to rolling pelleting in MOFs raw powder, and the core-shell type MOFs composite particles are obtained after drying. According to the core-shell type MOFs composite particles, compounding of core-shell materials is achieved in a mechanical bonding mode, the process is simple, the limitation that the varieties of core-shell materials are limited in a traditional in-situ chemical compounding mode is overcome, the application range is wide, interface bonding force is high, the yield is high, and industrial production is easy.

Description

technical field [0001] The invention belongs to the technical field of organic-inorganic composite porous material and its preparation method. Background technique [0002] Metal-organic frameworks (MOFs) are a new class of porous materials with broad application prospects. They are assembled from metal ions and organic ligands. Pore ​​structure, large specific surface area and porosity, and low skeleton density. At present, MOFs have become one of the research hotspots and frontiers in the field of materials, showing potential application prospects in the fields of gas storage, adsorption separation, photoelectric catalysis, ion exchange, biological activity and molecular recognition. [0003] Due to the comprehensive performance of individual components, MOFs composite materials have become a new type of material that combines the advantages of MOFs and compensates for their defects. Among them, MOFs core-shell structure materials have been a research hotspot in the field...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/02B01J13/22B01D53/02B01J20/22B01J20/30B01J20/28
CPCB01D53/02B01J13/02B01J13/22B01J20/226B01J20/28011B01J20/28057B01J20/28061B01J20/28064
Inventor 高伟张瑛常青孙肇兴
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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