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High stability and high strength catalyst for synthesis of methanol and preparation method thereof

A technology for synthesizing methanol with high stability, which is applied in chemical instruments and methods, preparation of hydroxyl compounds, preparation of organic compounds, etc., can solve the problems such as the performance gap of catalysts for synthesizing methanol, and achieve improved reaction activity and stability, scientific design, The effect of improving mechanical strength

Active Publication Date: 2019-02-01
SOUTHWEST RES & DESIGN INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is still a big gap in the performance of methanol synthesis catalysts at home and abroad.

Method used

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  • High stability and high strength catalyst for synthesis of methanol and preparation method thereof
  • High stability and high strength catalyst for synthesis of methanol and preparation method thereof
  • High stability and high strength catalyst for synthesis of methanol and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The present embodiment provides the preparation of the high-stability and high-strength synthetic methanol catalyst of the present invention, specifically:

[0033] Weigh 52.89g Zn(NO 3 ) 2 ·6H 2 O, 66.71g Al(NO 3 ) 3 9H 2 O, dissolved in 500ml deionized water, stirred to make it completely dissolved, and prepared as salt solution A. Weigh 272.6g Cu(NO 3 ) 2 ·3H 2 O, 92.11g Zn(NO 3 ) 2 ·6H 2 O, 66.71g Al(NO 3 ) 3 9H 2 O and 28.86g Mg(NO 3 ) 2 ·6H 2 O, dissolved in 1500ml deionized water, stirred to make it completely dissolved, and prepared as salt solution B. Weigh 233.78g NaCO 3 Dissolve in 2000ml of deionized water, and stir to make it completely dissolved, and prepare alkaline solution C.

[0034] Preheat salt solution A, B and alkali solution C to 70°C, add appropriate amount of bottom water to the reactor, and preheat to 70°C as well. Both the salt and alkali feed inlets of the reactor are equipped with atomizers. The salt solution A and the al...

Embodiment 2

[0039] The present embodiment provides the preparation of the high-stability and high-strength synthetic methanol catalyst of the present invention, specifically:

[0040] Weigh 29.89g Zn(NO 3 ) 2 ·6H 2 O, 75.4g Al(NO 3 ) 3 9H 2 O, dissolved in 500ml deionized water, stirred to make it completely dissolved, and prepared as salt solution A. Weigh 289.73g Cu(NO 3 ) 2 ·3H 2 O, 86.11g Zn(NO 3 ) 2 ·6H 2 O, 75.4g Al(NO 3 ) 3 9H 2 O and 23.17g Mg(NO 3 ) 2 ·6H 2 O, dissolved in 1500ml deionized water, stirred to make it completely dissolved, and prepared as salt solution B. Weigh 304.62g KCO 3 Dissolve in 2000ml of deionized water, and stir to make it completely dissolved, and prepare alkaline solution C.

[0041] Preheat salt solution A, B and alkali solution C to 85°C, add appropriate amount of bottom water into the reactor, and preheat to 85°C as well. Add salt solution A and alkali solution B to the reactor dropwise. Simultaneously, the reactor was stirred and...

Embodiment 3

[0053] The present embodiment provides the preparation of the high-stability and high-strength synthetic methanol catalyst of the present invention, specifically:

[0054] Weigh 18.39g Zn(NO 3 ) 2 ·6H 2 O, 69.58g Al(NO 3 ) 3 9H 2 O, dissolved in 500ml deionized water, stirred to make it completely dissolved, and prepared as salt solution A. Weigh 347.7g Cu(NO 3 ) 2 ·3H 2 O, 68.6g Zn(NO 3 ) 2 ·6H 2 O, 69.58g Al(NO 3 ) 3 9H 2 O and 5.74g Mg(NO 3 ) 2 ·6H 2 O, dissolved in 1500ml deionized water, stirred to make it completely dissolved, and prepared as salt solution B. Weigh 233.78g NaCO 3 Dissolve in 2000ml of deionized water, and stir to make it completely dissolved, and prepare alkaline solution C.

[0055] Preheat salt solution A, B and alkali solution C to 80°C, add appropriate amount of bottom water into the reactor, and preheat to 80°C as well. Both the salt and alkali feed inlets of the reactor are equipped with atomizers. The salt solution A and the al...

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Abstract

The invention discloses a high stability and high strength catalyst for synthesis of methanol and a preparation method thereof. The catalyst has excellent low temperature activity, good thermal stability and higher mechanical strength. The catalyst provided by the invention includes: 45-75% of CuO, 10-25% of ZnO, 5-30% of Al2O3, and 1-5% of MgO. The preparation method provided by the invention adopts a spray process to carry out two-step coprecipitation, and specifically the method includes: atomizing a mixed salt solution of zinc and aluminum and an alkali solution respectively, and then spraying the atomized solutions into a reactor for reaction to obtain a carrier structure precursor, then further spraying an atomized salt solution of copper, zinc, aluminum and magnesium and the alkalisolution into the reactor, and carry out the second step reaction, then conducting aging, filtering, washing, adding of graphite, repulping, roasting and moulding, thus obtaining the catalyst for synthesis of methanol. The preparation method provided by the invention has the advantages of scientific design, simple process and easy operation.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a catalyst for synthesizing methanol with high stability and high strength and a preparation method thereof. Background technique [0002] Methanol is widely used in the traditional chemical industry. It is the upstream raw material for a series of chemical products such as formaldehyde, dimethyl ether, and acetic acid. It has an important basic position in the chemical industry. Syngas-to-methanol process conforms to the general trend of green chemical industry and environmental friendliness, and has great development potential. [0003] Large-scale synthesis of methanol from syngas requires catalysts with high stability and high selectivity at high temperature. After a long period of research, it has been found that copper-based catalysts have good low-temperature activity, high selectivity, and suitable operating conditions, and have become the main direction of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80C07C29/154C07C31/04
CPCB01J23/002B01J23/80B01J2523/00C07C29/154B01J2523/17B01J2523/22B01J2523/27B01J2523/31C07C31/04Y02P20/52
Inventor 赵安民孙晨周菊发蔡洪城贺安平张可羡刘建明
Owner SOUTHWEST RES & DESIGN INST OF CHEM IND
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