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A kind of preparation method of copper-containing catalyst

A copper catalyst and catalyst technology are applied in the preparation of organic compounds, chemical instruments and methods, preparation of hydroxyl compounds, etc., to achieve the effects of good thermal stability and high activity

Active Publication Date: 2016-01-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The method for synthesizing methanol catalysts introduced in the above-mentioned patent adjusts the catalyst’s performance by adding new additives (Li and surfactant), changing the catalyst preparation process (one-step process to two-step or three-step process) and changing the precursor of Al. structure, surface acidity, and electronic properties to improve the activity, selectivity or lifespan of existing catalysts, but the key to improving the activity and lifespan of methanol synthesis catalysts is to increase the specific surface area of ​​the catalyst and the distribution of the active component copper and the promoter zinc more uniform and stronger synergistic effect, none of the above patents involved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029]Add 500mL water in dissolving tank 1, add 98gZn (NO 3 ) 2 ·6H 2 O is dissolved to form solution A, the temperature of solution A is raised to 55°C, and CO with a concentration of 90v% is passed into solution A 2 , the pH value of the slurry was controlled to be 7.5±0.2 when gelling, and the reaction time was 0.5h to generate the slurry I containing sediment. Add 500mL of water into the dissolution tank 2, then add 34 grams of sodium metaaluminate to dissolve, and make solution B, raise the temperature of solution B to 55°C, and inject CO with a concentration of 90v% into solution B 2 , the pH value of the slurry was controlled to be 7.8±0.2 when gelling, and the reaction time was 0.5h to generate the slurry II containing sediment. CO in Solution A 2 The molar ratio of the total amount of gas to the zinc salt is 3.5, and the CO 2 The total amount of gas and Al in solution B 2 o 3 The molar ratio was 4.0. The two sediment-containing slurries are mixed and aged, and...

Embodiment 2

[0032] Add 500mL water in dissolving tank 1, add 84gZn (NO 3 ) 2 ·6H 2 O is dissolved to form solution A, the temperature of solution A is raised to 65°C, and CO with a concentration of 90v% is passed into solution A 2 , the pH value of the slurry was controlled to be 7.6±0.2 when gelling, and the reaction time was 0.5h to generate slurry I containing sediment. Add 500mL of water into the dissolution tank 2, then add 34 grams of sodium metaaluminate to dissolve, and make solution B, raise the temperature of solution B to 60°C, and inject CO with a concentration of 90v% into solution B 2 , the pH value of the slurry was controlled to be 8.0±0.2 when gelling, and the reaction time was 0.5h to generate the slurry II containing sediment. CO in Solution A 2 The molar ratio of the total amount of gas to the zinc salt is 3.0, and the CO 2 The total amount of gas and Al in solution B 2 o 3 The molar ratio was 3.5. The two sediment-containing slurries are mixed and aged, and th...

Embodiment 3

[0035] Add 500mL water in dissolving tank 1, add 92gZn (NO 3 ) 2 ·6H 2 O is dissolved to make solution A, the temperature of solution A is raised to 70°C, and CO with a concentration of 90v% is passed into the solution 2 , the pH value of the slurry was controlled to be 7.5±0.2 when gelling, and the reaction time was 0.5h to generate the slurry I containing sediment. Add 250mL of water into the dissolution tank 2, then add 48 grams of sodium metaaluminate to dissolve, and make solution B, raise the temperature of solution B to 70°C, and inject CO with a concentration of 90v% into solution B 2 , the pH value of the slurry was controlled to be 7.8±0.2 when gelling, and the reaction time was 0.5h to generate the slurry II containing sediment. CO in Solution A 2 The molar ratio of the total amount of gas to the zinc salt is 3.8, and the CO 2 The total amount of gas and Al in solution B 2 o 3 The molar ratio was 4.5. The two sediment-containing slurries are mixed and aged, ...

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PUM

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Abstract

The invention discloses a preparation method of a copper-containing catalyst. The preparation method is as follows: using a carbonization method to respectively prepare a zinc containing compound precipitation and an aluminum compound precipitation, then mixing and aging the two precipitates, meanwhile adding basic copper carbonate, then washing, filtering, soaking with an organic solvent, drying, baking, pressing for molding to obtain the copper-containing catalyst. The catalyst obtained by the method is high in specific surface area, an active phase is dispersed evenly, the synergistic effect of active component Cu and a cocatalyst Zn can be improved, activity, thermal stability and the service life of the a copper-containing catalyst are improved, and the catalyst is suitable to use as a catalyst for methanol synthesis.

Description

technical field [0001] The invention relates to a preparation method of a copper-containing catalyst, in particular to a preparation method of a copper-containing catalyst with high activity and good thermal stability for synthesizing methanol. Background technique [0002] Methanol is an extremely important chemical raw material, which is widely used in organic synthesis, dyes, fuels, medicines, coatings and national defense industries. Its output ranks third in the world after synthetic ammonia and ethylene. In recent years, methanol demand and production capacity have been increasing Industrial development and continued growth. [0003] In industry, methanol is generally used to contain H 2 , CO, CO 2 Syngas is produced under certain conditions of pressure, temperature and presence of catalysts. At present, medium and low pressure gas phase methods are widely used in the world to synthesize methanol, and the catalysts used are basically mixed oxides of copper, zinc and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/80C07C31/04C07C29/154
CPCY02P20/52
Inventor 王海涛徐学军刘东香冯小萍王继锋
Owner CHINA PETROLEUM & CHEM CORP