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Nanometer copper-based catalyst and preparation method thereof

A catalyst and nano-copper technology, applied in the field of chemistry, can solve the problems of low catalytic activity and large addition amount, and achieve the effects of increasing catalytic amount, reducing usage amount and improving catalytic efficiency

Active Publication Date: 2018-12-11
MAOMING KEDA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a nano-copper-based catalyst and its preparation method in view of the problems of low catalytic activity and large dosage of current catalysts

Method used

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  • Nanometer copper-based catalyst and preparation method thereof

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preparation example Construction

[0029] A preparation method of nanometer copper-based catalyst, comprising the steps of:

[0030] In terms of parts by mass, take 5-8 parts of catalyst active body, 1-3 parts of catalyst precursor, 7-10 parts of magnetic load, and 50-70 parts of absolute ethanol, mix them, and ultrasonically disperse them for 20-30 minutes to obtain an ultrasonic liquid. Take the ultrasonic liquid and add sodium borohydride ethanol solution with a concentration of 0.14mol / L according to the mass ratio of 7~9:4~6, stir and mix at 25~30°C for 1~2h, attract with a magnet, take the magnetic attractant a and wash it with deionized water , washed with ethanol, and dried to obtain a nano-copper-based catalyst.

Embodiment 1

[0032]Catalyst active body: (1) Take dimethylimidazole and add methanol at a mass ratio of 1:10, stir and mix for 15 minutes to obtain solution A, take cobalt nitrate hexahydrate and add methanol at a mass ratio of 2:25, stir and mix for 10 minutes to obtain solution B , take solution A and add solution B at a mass ratio of 4:2, stir and mix at 45°C for 20 minutes, let it stand for 36 hours, centrifuge, take the precipitate, wash it with methanol, and dry it to obtain a dried product, take the dried product and keep it warm at 400°C for 2 hours, and control the temperature rise The rate was 2°C / min, and cooled to room temperature to obtain a cooled product;

[0033] (2) Take the cooling material and add ethanol at a mass ratio of 1:50, stir and mix for 5 minutes, then add 7% copper nitrate hexahydrate of the cooling material, stir and mix for 2 hours, centrifuge, take the precipitate a, wash it with absolute ethanol, dry it, and Calcined at 350°C for 1 hour and cooled to room ...

Embodiment 2

[0039] Catalyst active body: (1) Take dimethylimidazole and add methanol at a mass ratio of 2:15, stir and mix for 18 minutes to obtain solution A, take cobalt nitrate hexahydrate and add methanol at a mass ratio of 3:30, stir and mix for 15 minutes to obtain solution B , take solution A and add solution B according to the mass ratio of 6:3, stir and mix at 47°C for 25min, let it stand for 50h, centrifuge, take the precipitate, wash with methanol, and dry to obtain a dry product, take the dry product and keep it at 430°C for 2.5h, control The heating rate was 2°C / min, and cooled to room temperature to obtain a cooled product;

[0040] (2) Take the cooling material and add ethanol according to the mass ratio of 3:55, stir and mix for 7 minutes, then add 9% copper nitrate hexahydrate of the cooling material, stir and mix for 2.5 hours, centrifuge, take the precipitate a, wash it with absolute ethanol, and dry it. Calcined at 370°C for 1.5h and cooled to room temperature to obtai...

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Abstract

The invention discloses a nanometer copper-based catalyst and a preparation method thereof, and belongs to the field of chemistry. Dimethylimidazole and cobalt nitrate hexahydrate are used as raw materials for mixed calcination; a porous hollow nanometer crystal lattice is formed; then, copper nitrate hexahydrate is added; copper ions are mixed into the crystal lattice; the ligand active bodies are formed; the catalysis oxygen generation activity is enhanced in light driving water oxidization; the oxidization efficiency is improved. Cyanoguanidine and ammonium metavanadate are used as raw materials; through calcination, catalyst precursors doped with graphite phase carbon nitride are obtained; the oleic acid loading catalysis quantity is improved; the consumption of catalysts is reduced. The ferric trichloride hexahydrate, anhydrous sodium acetate, 1,6-hexamethylenediamine and the like are used as raw materials for forming magnetic loading articles; the superparamagnetic property is realized; the catalyst can be recovered to be repeatedly utilized; the use efficiency of the catalyst is improved. The catalyst and the preparation method solve the problems of low catalysis activity and great addition quantity of the existing catalyst.

Description

technical field [0001] The invention belongs to the field of chemistry, and in particular relates to a nanometer copper-based catalyst and a preparation method thereof. Background technique [0002] With the emphasis on environmental protection and the shortage of petroleum resources, the oleochemical industry, which uses oil as raw material to produce various soap products, various fatty acids and fatty acid derivatives, has developed vigorously. Oleic acid is an important raw material in the field of oleochemicals, mainly derived from nature. Oleic acid mainly exists in animal and vegetable oils in the form of its glycerides. Oleic acid can be obtained by saponifying and acidifying oils and fats with high oleic acid content. At present, the industrial oleic acid products produced by oleochemical enterprises are actually a mixture of palmitic acid C16:0, stearic acid C18:0, oleic acid C18:1, linoleic acid C18:2, linolenic acid C18:3, etc., of which oil The content of aci...

Claims

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Application Information

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IPC IPC(8): B01J27/24
CPCB01J27/24B01J35/33
Inventor 张剑路芸庞成荣
Owner MAOMING KEDA CHEM
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