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Preparation method for carbon-based catalyst of composite metal

A carbon catalyst and composite metal technology, which is applied in the field of carbon catalyst preparation, can solve the problems of few reusable times, poor catalyst stability, complicated preparation process, etc., and achieves many reusable times, strong selectivity, and simple preparation process. Effect

Active Publication Date: 2015-09-09
广东兴尚环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the preparation of supported composite metal carbon catalysts by metal vapor method and biochemical method has the following disadvantages: the preparation process is relatively complicated, the production cost is high, the stability of the prepared catalyst is poor, the product activity is low, and the number of times of reuse few

Method used

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  • Preparation method for carbon-based catalyst of composite metal

Examples

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Effect test

Embodiment 1

[0021] The preparation method of the carbon catalyst of composite metal of the present invention, first coconut shell charcoal is crushed and screened, and 10 g of coconut shell charcoal with a particle diameter in the range of 80 to 100 mesh is placed in a flask, 50ml of water is added, and heated to 40° C.; Then pass through ozone to oxidize for 18 hours, take it out and dry it, put it into a pre-configured compound solution with 20% solute (the ratio of the four compounds of CuSO4, KMnO4, AlCl3 and TiO2 is 1:1:1:2), and heat to reflux 4h, and then placed in a high-temperature heating furnace, heated to 800°C; and kept under a pressure of 0.2MPa and calcined for 4h to obtain a catalyst for the hydrogenation reaction of fatty nitriles.

Embodiment 2

[0023] The preparation method of the carbon catalyst of composite metal of the present invention, first coconut shell charcoal is crushed and screened, and 10 g of coconut shell charcoal with a particle diameter in the range of 80 to 100 mesh is placed in a flask, 50ml of water is added, and heated to 50° C.; Then add ozone, 30-50% nitric acid or sulfuric acid to oxidize for 21 hours, take it out and dry it, and put it into a pre-configured solute that is 30% in a composite solution (CuSO4, KMnO4, AlCl3 and TiO2 The ratio of four compounds is 1:1: 1.5:2.5), heated to reflux for 5 hours, then placed in a high-temperature heating furnace, heated to 900°C; and kept under a pressure of 0.3 MPa for 6 hours to obtain a catalyst for the hydrogenation reaction of fatty nitriles.

Embodiment 3

[0025] The preparation method of the carbon catalyst of composite metal of the present invention, woody charcoal and coal quality: after 1:1 mixing earlier, pulverize and sieve, get particle diameter and place 10 g of charcoal in the scope of 70 ~ 120 mesh in a flask, add 50ml of water , heated to 60 ° C;, then add ozone, 30-50% nitric acid or sulfuric acid to oxidize for 24 h, take it out and dry it, put it into a pre-configured compound solution with 40% solute (CuSO4, KMnO4, AlCl3 and TiO2 four kinds The ratio of the compound is 1:1:2:3), heated to reflux for 6h, and then placed in a high-temperature heating furnace, heated to 1000°C; after calcination at a pressure of 0.4MPa for 8h, a catalyst for the hydrogenation reaction of fatty nitriles was obtained.

[0026] Examples 4-10 are obtained by changing the ratio of activated carbon with different particle sizes, the type and concentration of oxidant, oxidation time, calcination temperature and pressure and other conditions ...

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Abstract

The invention discloses a preparation method for a carbon-based catalyst of composite metal. The method comprises: firstly, impregnating activated carbon into water with a temperature of 40-60 DEG C, and adding an oxidant to carry out surface oxidization treatment for 18-24 hours; then, taking out and drying the activated carbon, putting the dried activated carbon into 20-40% of a complex solution to carry out reflux treatment for 4-6 hours; and finally, taking out the activated carbon and putting the activated carbon into a high-temperature furnace with a temperature of 800-1000 DEG C and pressure intensity of 0.2-0.4 MPa to fix for 4-8 hours to obtain a catalyst of fatty nitrile hydrogenation reaction. The preparation method has the beneficial effects that: the operation is simple, convenient and quick; the prepared catalyst is high in catalytic activity and very strong in selectivity; the preparation process is simple; the metal is easily recycled; the catalyst can be repeatedly utilized for many times; the use cost of the catalyst is greatly reduced; and the influence to the environment is reduced to a great extent.

Description

technical field [0001] The invention relates to the production field of chemical synthesis catalysts. More specifically, the present invention relates to a method for preparing a metal-composite carbon catalyst in the hydrogenation reaction of fatty nitriles. Background technique [0002] Catalytic hydrogenation of fatty nitriles is an important method for preparing amines. There are many catalysts for preparing amines, such as Cu, Mn, Al, Ni, Co, Ru, Cu, Rh, Pd, Ti, Pt, among which Ni, Co , Ru are suitable for preparing primary amines, Cu and Rh are suitable for preparing secondary amines, and Cu, Mn, Al, Pd, Ti, Pt are suitable for preparing tertiary amines. The supported composite metal carbon catalyst is an important catalyst in the conversion of hydrocarbons, such as catalytic hydrogenation and catalytic cracking. The composite metal carbon catalyst has this function mainly because of its strong hydrogen absorption function. The carbon catalysts for preparing suppor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889C07C209/48C07C209/22C07C211/08
CPCY02P20/584
Inventor 胡志杰陈兴大徐克文
Owner 广东兴尚环境科技有限公司
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