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A kind of preparation method of co@c@mof magnetic catalyst and its application

A magnetic catalyst and reaction technology, applied in the preparation of organic compounds, chemical instruments and methods, preparation of hydroxyl compounds, etc., can solve the problems of complete recovery and difficult catalysts, and achieve the effects of rapid separation, high conversion rate and high selectivity

Active Publication Date: 2019-09-10
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned technology for preparing cyclohexanol has defects such as that the product needs to be further purified and separated, and the catalyst is difficult to recover completely from the reaction.

Method used

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  • A kind of preparation method of co@c@mof magnetic catalyst and its application
  • A kind of preparation method of co@c@mof magnetic catalyst and its application
  • A kind of preparation method of co@c@mof magnetic catalyst and its application

Examples

Experimental program
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Effect test

Embodiment 1

[0034] (1) The preparation method of Co@C@MOF magnetic catalyst, including the following steps:

[0035] Add 2.988g cobalt acetate, 0.3mL hydrofluoric acid (40% mass concentration), 2.0g terephthalic acid (cobalt acetate: hydrofluoric acid: terephthalic acid: water = 1:1:1:278), add Stir and mix in 60g of water, then add the closed reaction kettle, put the closed reaction kettle in an oven for static hydrothermal crystallization at 220°C for 24 hours, after the reaction, cool down to room temperature to obtain the reaction production liquid; take the reaction production liquid through the second One suction filtration treatment, the filter cake was first washed with 20mL of N,N'-dimethylformamide (DMF) at 60°C for one time, then suction filtered, and then washed with 40mL of absolute ethanol at 60°C 1 time, after the second suction filtration treatment and drying treatment, the Co-MOF metal organic framework material was obtained;

[0036] Put the metal-organic framework mate...

Embodiment 2～14

[0040] In Examples 2-14, according to the technical solution provided by the present invention, the ratio of raw materials is adjusted within the given range, and the performance of the obtained products is equivalent. The implementation process is the same as in Example 1 except for the following differences, and the relevant results are shown in Table 1 and Table 2.

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Abstract

The invention discloses a preparation method and application of a Co@C@MOF magnetic catalyst. The preparation method includes the following steps: first mix cobalt acetate, hydrofluoric acid, terephthalic acid, and water, stir evenly, and then add them to a closed reaction kettle. , and then put the sealed reaction kettle into an oven for static hydrothermal crystallization. After the reaction is completed, it is quickly cooled to room temperature to obtain the reaction product liquid; then the reaction product liquid is taken and subjected to the first suction filtration treatment, and the filter cake is thermally washed. , and then after a second suction filtration treatment, the filter cake is washed and dried in sequence to obtain the Co-MOF metal-organic framework material; finally, the Co-MOF metal-organic framework material is placed in a vacuum muffle furnace for reduction treatment to obtain Co@C@MOF magnetic catalyst. The static hydrothermal crystallization mode is adopted to greatly shorten the synthesis time, greatly reduce energy consumption, and save production costs; and the obtained Co@C@MOF magnetic catalyst has uniform particles, good dispersion, and high catalytic activity.

Description

technical field [0001] The invention relates to the technical field of magnetic metal-organic framework materials, in particular to a preparation method and application of a Co@C@MOF magnetic catalyst. Background technique [0002] Metal-organic frameworks (MOFs for short) refer to three-dimensional periodic grid structure porous materials with regular nanopores formed by self-assembly, with organic functional groups as scaffolds and metal ions or metal clusters as central nodes. . MOFs have three unique features: first, the framework has a rigid structure; second, organic ligands can be chemically modified according to the requirements of the target; third, the framework structure has a definite geometric configuration. Compared with traditional porous materials, MOFs have the advantages of both inorganic compounds and organic polymers, with high porosity, special topological structure, regular pore structure, large specific surface area, adjustable structural properties, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/22C07C29/145C07C35/08
CPCC07C29/145B01J31/2213B01J2231/643B01J2531/0213B01J2531/845B01J2531/0241B01J35/33C07C35/08
Inventor 鲁新环何杰景润陶佩佩夏清华
Owner HUBEI UNIV
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