Catalyst applicable to synthesis of methanol by multi-component mixed gas as well as preparation method and application of methanol catalyst

A technology for synthesizing methanol and catalysts, applied in chemical instruments and methods, preparation of hydroxyl compounds, preparation of organic compounds, etc., can solve the problem of not studying the influence of inert gases on catalytic reactions, etc., and achieve the realization of heat release and heat transfer ability, space-time High yield and the effect of improving methanol selectivity

Active Publication Date: 2015-06-24
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it did not study the influence of inert gas on the catalytic reaction, and there is a certain gap b

Method used

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  • Catalyst applicable to synthesis of methanol by multi-component mixed gas as well as preparation method and application of methanol catalyst

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1). Synthesize methanol catalyst according to the mass percentage of the following metal oxides: CuO:ZnO:Al 2 o 3 =42%:38%:20%. Weigh 127.64g copper nitrate, 139.56g zinc nitrate, 147.11g aluminum nitrate respectively according to the mass percentage of 42%: 38%: 20%, dissolve copper nitrate, zinc nitrate and aluminum nitrate in 1L deionized water successively, prepare the mixture the first solution.

[0036] (2). Weigh 211.98g of sodium carbonate, dissolve it in deionized water, and prepare a second solution whose molar concentration is 1mol / L.

[0037] (3). Under the condition that the reaction temperature is 20°C and mechanical stirring, the co-current co-precipitation method is used to carry out co-current co-precipitation of the above-mentioned 1L first solution and 1.8L second solution, and the pH value of the precipitate is controlled at 8. Form a co-precipitation suspension. After crystallization at 60 °C for 16 h, the precipitate was washed with deionized ...

Embodiment 2

[0041] (1). Synthesize methanol catalyst according to the mass percentage of the following metal oxides: CuO:ZnO:Al 2 o 3 :La 2 o 3 =44%:38%:16%:2%. Take by weighing 138.19g copper sulfate, 139.56g zinc nitrate, 117.69g aluminum nitrate and 5.32g lanthanum nitrate respectively by the mass percentage of 44%:38%:16%:2%, successively add copper sulfate, zinc nitrate, aluminum nitrate and nitric acid Lanthanum was dissolved in 1 L of deionized water to make up the mixed first solution.

[0042] (2). Weigh 276.38g of potassium carbonate, dissolve it in deionized water, and prepare a second solution whose molar concentration is 1mol / L.

[0043] (3). Under the condition that the reaction temperature is 30°C and mechanically stirred, the above-mentioned 1.7L second solution is added dropwise into 1L of the first solution to precipitate by using the sequential precipitation method, and the pH value of the precipitate is controlled at 8.5, forming a precipitate suspension. After c...

Embodiment 3

[0047] (1). Synthesize methanol catalyst according to the mass percentage of the following metal oxides: CuO:ZnO:Al 2 o 3 :SiO2 2 =38%:40%:20%:2%. Take by weighing 115.48g copper nitrate, 142.00g zinc sulfate, 94.68g aluminum chloride and 6.94g ethyl orthosilicate respectively by the mass percentage of 38%: 40%: 20%: 2%, copper nitrate, zinc sulfate, Aluminum chloride and ethyl orthosilicate were dissolved in 1L of deionized water to prepare the mixed first solution.

[0048] (2). Weigh 211.98g of sodium carbonate, dissolve it in deionized water, and prepare a second solution whose molar concentration is 1mol / L.

[0049] (3). Under the conditions of the reaction temperature being 35°C and mechanical stirring, the above-mentioned 1L of the first solution was added dropwise to the 1.6L of the second solution for precipitation by using the reverse precipitation method, and the pH value of the precipitation was controlled at 9. A precipitated suspension is formed. After cryst...

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Abstract

The invention discloses a catalyst applicable to synthesis of methanol by multi-component mixed gas. The methanol catalyst comprises the following components in percentage by mass: 25%-65% of CuO, 20%-40% of ZnO, 15%-35% of Al2O3 and 0-5% of an aid M, wherein the aid M is one or a mixture of more of Zr, Si, La, Mn, Ce, Cr and Ti oxides. Besides, the invention further discloses a preparation method and application of the methanol catalyst. The methanol catalyst has the beneficial effects that the preparation process is simple, the repeatability is good, and the industrial large-scale production is easily realized; the methanol catalyst has the characteristics of being high in specific surface area, easy to form, high in mechanical strength after forming, applicable to multi-component mixed gas of different proportions, high in conversion rate of carbon dioxide and selectivity of methanol and small in generation rate of by-products; by adjusting the constitution proportion of the multi-component mixed gas, the heat release intensity of the catalyst can be adjusted, and therefore, the balance between heat release and heat transfer capacity is achieved, so that the operation stability of the catalyst is achieved, and the service life of the catalyst is prolonged.

Description

technical field [0001] The invention belongs to the field of inorganic chemistry, and in particular relates to a catalyst for synthesizing methanol, in particular to a catalyst suitable for synthesizing methanol from multi-element mixed gas with different ratios, as well as its preparation method and application. Background technique [0002] CO, CO emitted from industrial production 2 with H 2 Industrial waste gas is not only the culprit of environmental pollution but also a rich and renewable carbon resource. It has extremely important practical significance to use it efficiently and rationally, and has attracted extensive attention of researchers in many fields such as environmental protection, chemical industry and energy. For ordinary methanol synthesis catalysts, if using rich CO, CO 2 with H 2 Synthesis of methanol with multi-component mixed gas, the study found that due to CO 2 The inertness and thermodynamic unfavorable factors make CO 2 It is difficult to act...

Claims

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Application Information

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IPC IPC(8): B01J23/80B01J23/83B01J23/86B01J23/889C07C31/04C07C29/154
CPCY02P20/52
Inventor 孙予罕魏伟解荣永夏林王慧
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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