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A kind of copper-based methanol synthesis catalyst and preparation method thereof

A technology for methanol synthesis and catalyst, applied in chemical instruments and methods, preparation of hydroxyl compounds, preparation of organic compounds, etc., can solve the problems of short service life, poor thermal stability, etc., to improve dispersion and utilization rate, and improve catalytic activity. , to ensure the effect of high activity and thermal stability

Active Publication Date: 2018-09-18
SHENYANG SANJUKAITE CATALYST +1
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  • Summary
  • 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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  • A kind of 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 101g Zn(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 comprises: mixing the copper-zinc mixed solution and the first precipitant aqueous solution in parallel, controlling the pH to be 7-8, and standing for aging to form a slurry A ; Add the second precipitant aqueous solution to the soluble aluminum salt aqueous solution, control the pH to 7-8, and the temperature to 40-50°C, leave it to age to obtain slurry B; mix slurry A and slurry B, filter, and pass through the solid phase Washing, drying, roasting, molding treatment, that is, the copper-based methanol synthesis catalyst is obtained. The above preparation method has simple steps, strong controllability, wide sources of raw materials, and easy industrialization. The preparation method of the present invention can obtain a copper-based methanol synthesis catalyst with high catalytic activity and thermal stability, which is suitable for the synthesis of methanol containing CO, CO2, H2 The synthesis gas can produce methanol under the condition of low temperature and low pressure, and the catalyst of the invention does not need to be reduced before use, which is convenient for large-scale popularization and application.

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 Patents(China)
IPC IPC(8): B01J23/80C07C29/156C07C31/04
CPCY02P20/52
Inventor 许灵瑞赵素云
Owner SHENYANG SANJUKAITE CATALYST
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