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Preparation method and application of Co@C@MOF magnetic catalyst

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 good dispersion.

Active Publication Date: 2017-06-30
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Preparation method and application of Co@C@MOF magnetic catalyst
  • Preparation method and application of Co@C@MOF magnetic catalyst
  • Preparation method and application of Co@C@MOF magnetic catalyst

Examples

Experimental program
Comparison scheme
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 comprises the following steps: mixing and stirring cobaltous acetate, hydrofluoric acid, terephthalic acid and water evenly, adding into a closed reaction kettle, putting the closed reaction kettle into an oven, conducting static hydrothermal crystallization, shock-chilling to the room temperature after the reaction is finished, obtaining a reaction generation liquid; conducting primary suction filtration on the reaction generation liquid, thermally washing a filter cake, conducting secondary suction filtration, sequentially washing and drying the filter cake to obtain a Co-MOF metal organic framework material; finally reducing the Co-MOF metal organic framework material in a vacuum muffle furnace to obtain the Co@C@MOF magnetic catalyst. The static hydrothermal crystallization mode is adopted, then the synthesis time is greatly shortened, the energy consumption is greatly reduced, and the production cost is saved; in addition, the obtained Co@C@MOF magnetic catalyst is even in particles, good in dispersity and high in 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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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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