Preparation method for catalyst containing copper and zinc

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

Active Publication Date: 2014-05-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 im

Method used

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Examples

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Example Embodiment

[0027] Example 1

[0028] Add 500mL water in dissolving tank 1, add 105gZn (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 7.5±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 65°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. Into solution A CO 2The molar ratio of the total amount of gas to the zinc salt is 3.5, and CO is passed into solution B 2 The total amount of gas and Al in solution B 2 o 3 The molar ratio was 4.0. The two sedimen...

Example Embodiment

[0030] Example 2

[0031] Add 250mL water in dissolving tank 1, add 87gZn (NO 3 ) 2 ·6H 2 O is dissolved to form solution A, the temperature of solution A is raised to 60°C, and CO with a concentration of 95v% is passed into solution A 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 I containing sediment. Add 300mL 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 65°C, and inject CO with a concentration of 95v% 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. Into solution A CO 2 The molar ratio of the total amount of gas to the zinc salt is 3.8, and CO is passed into solution B 2 The total amount of gas and Al in solution B 2 o 3 The molar ratio was 4.4. The two sedimen...

Example Embodiment

[0033] Example 3

[0034] Add 400mL water in dissolving tank 1, add 78gZn (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 88v% is passed into solution A 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 I containing sediment. Add 400mL of water into the dissolution tank 2, then add 44 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 7.6±0.2 when gelling, and the reaction time was 0.5h to generate the slurry II containing sediment. Into solution A CO 2 The molar ratio of the total amount of gas to the zinc salt is 2.8, and CO is passed into solution B 2 The total amount of gas and Al in solution B 2 o 3 The molar ratio was 3.5. The two sedimen...

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PUM

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Abstract

The invention discloses a preparation method for a catalyst containing copper and zinc. The method comprises the following steps: respectively preparing a precipitate containing a zinc compound and a precipitate containing an aluminum compound through carbonization; then mixing and aging the two precipitates and adding basic copper carbonate at the same time; and carrying out washing, filtering, drying, baking and pressed forming so as to obtain the catalyst containing copper and zinc. The catalyst prepared by using the method has a high specific area and uniform active particles, improves synergism between the two active components--copper and the cocatalyst zinc, enhances activity and thermal stability of the catalyst containing copper and zinc and prolongs the service life of the catalyst. The catalyst is applicable as a catalyst for synthesis of methanol.

Description

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Claims

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Application Information

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Owner CHINA PETROLEUM & CHEM CORP
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