Copper-based methanol synthesis catalyst and preparation method thereof

A methanol synthesis and catalyst technology, which is applied in catalyst activation/preparation, chemical instruments and methods, hydroxyl compound preparation, etc., can solve the problems of short service life, poor thermal stability, etc., to improve the degree of dispersion and utilization, and improve catalytic activity. , the effect of increasing the specific surface area

Active Publication Date: 2016-09-28
SHENYANG SANJUKAITE CATALYST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defects of poor thermal stability and short service life of existing copper-based methanol synthesis catalysts, and to provide a copper-based methanol synthesis catalyst with good heat resistance, long life and high catalytic activity. Catalyst preparation method

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  • Copper-based methanol synthesis catalyst and preparation method thereof

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Embodiment 1

[0038] The preparation method of the copper-based methanol synthesis catalyst described in the present embodiment comprises the steps:

[0039] Prepare 2L of aqueous solution containing 126g sodium oxalate; 136g Cu(NO 3 ) 2 ·3H 2 O and 110gZn(NO 3 ) 2 ·6H 2 O was dissolved in 2L of water to form a copper-zinc mixed solution; the above two solutions were added to the reaction kettle in parallel under continuous stirring, and the pH value of the reaction system was controlled to be 7-8. ;

[0040] Formulated to contain 88g of NH 4 HCO 3 Aqueous solution 1L stand-by; 139g Al(NO 3 ) 3 9H 2 Dissolve O in 1L of water; slowly add the ammonium bicarbonate aqueous solution to the aluminum nitrate aqueous solution, and react under stirring, and control the pH value of the reaction system to 7-8, the temperature is 50°C, keep stirring for 30 minutes, and stand still after the addition is completed Aging for 1 hour to obtain slurry B;

[0041] Fully mix slurry A and slurry B, ...

Embodiment 2

[0045] The preparation method of the copper-based methanol synthesis catalyst described in the present embodiment comprises the steps:

[0046] Prepare 2L of aqueous solution containing 127g sodium oxalate; 140g Cu(NO 3 ) 2 ·3H 2 O and 101gZn(NO 3 ) 2 ·6H 2 O was dissolved in 2L of water to form a copper-zinc mixed solution; the above two solutions were added to the reaction kettle in parallel under continuous stirring, and the pH value of the reaction system was controlled to be 7-8. A;

[0047] Formulated to contain 81g of NH 4 HCO 3 Aqueous solution 1L stand-by; 128g Al(NO 3 ) 3 9H 2 Dissolve O in 1L of water; slowly add the ammonium bicarbonate aqueous solution to the aluminum nitrate aqueous solution, and react under stirring, and control the pH value of the reaction system to 7-8, the temperature is 50°C, keep stirring for 30 minutes, and stand still after the addition is completed Aging for 1 hour to obtain slurry B;

[0048] Fully mix slurry A and slurry B,...

Embodiment 3

[0052] The preparation method of the copper-based methanol synthesis catalyst described in the present embodiment comprises the steps:

[0053] Prepare 2L of aqueous solution containing 126g sodium oxalate; 144g Cu(NO 3 ) 2 ·3H 2 O and 89gZn(NO 3 ) 2 ·6H 2 O was dissolved in 2L of water to form a copper-zinc mixed solution; the above two solutions were added to the reaction kettle in parallel under continuous stirring, and the pH value of the reaction system was controlled to be 7-8. ;

[0054] Formulated to contain 72g of NH 4 HCO 3 Aqueous solution 1L stand-by; 113g Al(NO 3 ) 3 9H 2 Dissolve O in 1L of water; slowly add the ammonium bicarbonate aqueous solution to the aluminum nitrate aqueous solution, react under stirring, and control the pH value of the reaction system to 7-8, the temperature is 50°C, continue to stir for 30 minutes, and stand still after the addition is completed Aging for 0.5h to obtain slurry B;

[0055] Fully mix slurry A and slurry B, stir...

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Abstract

The invention provides a copper-based methanol synthesis catalyst and a preparation method thereof. The method includes the steps that copper-zinc mixed liquor is mixed with a first precipitator aqueous solution in a parallel flow mode, the pH is controlled to be 7-8, standing is performed for ageing, and slurry A is formed; a second precipitator aqueous solution is added into a soluble aluminum salt aqueous solution, the pH is controlled to be 7-8, the temperature is controlled to be 40-50 DEG C, standing is performed for ageing, and slurry B is obtained; the slurry A and the slurry B are mixed and filtered, a solid phase is washed, dried, roasted and formed, and the copper-based methanol synthesis catalyst is obtained. According to the preparation method, the steps are simple, the controllability is high, the raw material source is wide, and industrialization is easy to achieve; by the adoption of the preparation method, the copper-based methanol synthesis catalyst with high catalytic activity and heat stability can be obtained and is suitable for producing methanol with synthesis gas containing CO, CO2 and H2 under the low temperature and low pressure conditions; besides, the catalyst does not need reduction before use and can be conveniently applied and popularized on a large scale.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a Cu / ZnO / Al 2 o 3 A catalyst for synthesizing methanol as a main component and a preparation method thereof. Background technique [0002] As an important basic chemical raw material and clean fuel, methanol is widely used in organic synthesis, medicine, pesticides, dyes, coatings, plastics, synthetic rubber, synthetic fibers, automobiles, national defense and many other fields. At present, methanol production on an industrial scale usually takes syngas as a raw material and reacts under certain conditions of temperature, pressure, and the presence of a catalyst. With the rapid development of social economy, the demand and production capacity of methanol at home and abroad continue to increase, which prompts the development of high-performance methanol synthesis catalysts to become a research hotspot in methanol production. [0003] There are many kinds of methanol synthesis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80C07C29/156C07C31/04
CPCY02P20/52B01J37/038B01J23/80C07C29/156C07C31/04
Inventor 许灵瑞赵素云
Owner SHENYANG SANJUKAITE CATALYST
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