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A kind of Agco nano crystal and its catalyst, preparation method and application

A nanocrystal and catalyst technology, applied in the field of energy catalysts, can solve the problems of limited selectivity and conversion rate, and achieve the effects of high atom utilization, high reactivity, and high catalytic activity

Active Publication Date: 2019-11-19
INST OF ADVANCED TECH UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there are still technical barriers to commercially achieving high selectivity to target products
Au / ZSM5, graphene / g-C3N4 and FeAlPO have all been used in the oxidation of cyclohexane, but their selectivity and conversion are limited

Method used

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  • A kind of Agco nano crystal and its catalyst, preparation method and application
  • A kind of Agco nano crystal and its catalyst, preparation method and application
  • A kind of Agco nano crystal and its catalyst, preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A method for preparing AgCo nanocrystals, comprising the steps of: mixing 23 parts of phenylene ether, 18 parts of oleylamine, 2.5 parts of oleic acid, cobalt acetylacetonate and silver acetate in parts by volume to obtain mixed solution A, cobalt acetylacetonate and benzene The mass volume ratio (g / L) of ether is 13:1, and the mass volume ratio (g / L) of silver acetate and phenyl ether is 7:1; preheat and stir the mixed solution A in an oil bath, and then add tert-butyl boron alkane to obtain a mixed solution B, the weight-to-volume ratio (g / L) of tert-butylborane and phenyl ether is 42:1; the mixed solution B is heated and stirred in an oil bath for 30min, the temperature of the oil bath is 210°C, and the stirring speed is 300 rpm / min, after the reaction is finished, the system is cooled to room temperature and cleaned to obtain AgCo nanocrystals.

[0038] A method for preparing an AgCo metal nano-catalyst, comprising the steps of: drying the above-mentioned AgCo nano...

Embodiment 2

[0040] A preparation method of AgCo nano crystals, comprising the steps of: mixing 27 parts of phenylene ether, 16 parts of oleylamine, 3.5 parts of oleic acid, cobalt acetylacetonate and silver acetate in parts by volume to obtain mixed solution A, cobalt acetylacetonate and benzene The mass volume ratio (g / L) of ether is 11:1, and the mass volume ratio (g / L) of silver acetate and phenyl ether is 9:1; preheat and stir the mixed solution A in an oil bath, and then add tert-butyl boron alkane to obtain a mixed solution B, the weight-to-volume ratio (g / L) of tert-butylborane and phenyl ether is 38:1; the mixed solution B is heated and stirred in an oil bath for 35min, the temperature of the oil bath is 190°C, and the stirring speed is 350 rpm / min, after the reaction is finished, the system is cooled to room temperature and cleaned to obtain AgCo nanocrystals.

[0041] A method for preparing an AgCo metal nano-catalyst, comprising the following steps: drying the above-mentioned ...

Embodiment 3

[0043] A preparation method of AgCo nano crystals, comprising the steps of: mixing 25 parts of phenylene ether, 17 parts of oleylamine, 3 parts of oleic acid, cobalt acetylacetonate and silver acetate in parts by volume to obtain mixed solution A, cobalt acetylacetonate and benzene The mass volume ratio (g / L) of ether is 12:1, and the mass volume ratio (g / L) of silver acetate and phenyl ether is 8:1; preheat and stir the mixed solution A in an oil bath, and then add tert-butyl boron alkane to obtain a mixed solution B, the weight-to-volume ratio (g / L) of tert-butylborane and phenyl ether is 40:1; the mixed solution B is heated and stirred in an oil bath for 32min, the temperature of the oil bath is 200°C, and the stirring speed is 330 rpm / min, after the reaction is finished, the system is cooled to room temperature and cleaned to obtain AgCo nanocrystals.

[0044]A method for preparing an AgCo metal nanocatalyst, comprising the steps of: drying the above-mentioned AgCo nanocr...

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Abstract

The invention discloses a AgCo nanocrystal. The invention also discloses a preparation method for the AgCo nanocrystal. The preparation method for the AgCo nanocrystal comprises the following steps: mixing phenyl ether, oleylamine, oleic acid, cobalt acetylacetonate and silver acetate so as to obtain a mixed solution A; then preheating the mixed solution A in an oil bath under stirring and adding t-butylborane so as to obtain a solution B; and preheating the mixed solution a in an oil bath under stirring, and after completion of a reaction, carrying out cleaning after a system is cooled to room temperature so as to obtain the AgCo nanocrystal. The invention also discloses a AgCo metal nano-catalyst which is prepared by loading the AgCo nanocrystal onto the surface of carbon black. The invention also provides a preparation method for the AgCo metal nano-catalyst. The preparation method for the AgCo metal nano-catalyst comprises the following steps: drying the AgCo nanocrystal so as to obtain AgCo solid powder; and mixing the AgCo solid powder with carbon black and hexane under stirring, and then carrying out centrifugation and drying so as to obtain the AgCo metal nano-catalyst. The invention also discloses application of the AgCo metal nano-catalyst to catalysis of the oxidation reaction of cyclohexane.

Description

technical field [0001] The invention relates to the technical field of energy catalysts, in particular to an AgCo nano crystal and a preparation method thereof, an AgCo metal nano catalyst, a preparation method and an application thereof. Background technique [0002] Cyclohexane oxidation is an important industrial reaction, and cyclohexanone and cyclohexanol in the reaction products are important chemical raw materials, widely used in fiber, synthetic rubber, industrial coating, medicine, pesticide, organic solvent and other industries. They are also important raw materials and precursors in many organic reactions, especially in the polymer industry. For example, they are raw materials for the production of nylon-6 and nylon-66. [0003] At present, the oxidation of cyclohexane generally chooses cobalt as the two main catalyst systems of homogeneous and heterogeneous catalysis. In order to obtain high-purity cyclohexanol and cyclohexanone, in order to prevent deep oxidati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89C07C29/50C07C35/08C07C45/33C07C49/403C30B29/52C30B7/14B82Y40/00B82Y20/00
CPCB01J23/8913B82Y20/00B82Y40/00C07C29/50C07C45/33C30B7/14C30B29/52C07C35/08C07C49/403
Inventor 王梁炳张文博王梦琳李洪良曾杰
Owner INST OF ADVANCED TECH UNIV OF SCI & TECH OF CHINA
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