Ruthenium-based hydrogenation catalyst, ruthenium-based hydrogenation catalyst aqueous solution, preparation method and application thereof

A technology of hydrogenation catalyst and aqueous solution, which is applied in the direction of catalyst, hydrogenation hydrocarbon, metal/metal oxide/metal hydroxide catalyst, etc. Difficulties and other problems, to achieve the effect of strong ability to resist fluctuations in process conditions, long service life, and simple regeneration steps

Pending Publication Date: 2021-06-29
内蒙古瑞翔拓创新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects that the existing catalysts used in the hydrogenation of benzene to prepare cyclohexene have limited improvement in the conversion rate of benzene and the selectivity of cyclohexene, and the catalytic activity of the catalyst is not high, the use amount is large, and the regeneration is difficult, and further provide A kind of ruthenium-based hydrogenation catalyst, ruthenium-based hydrogenation catalyst aqueous solution and preparation method and application

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  • Ruthenium-based hydrogenation catalyst, ruthenium-based hydrogenation catalyst aqueous solution, preparation method and application thereof
  • Ruthenium-based hydrogenation catalyst, ruthenium-based hydrogenation catalyst aqueous solution, preparation method and application thereof
  • Ruthenium-based hydrogenation catalyst, ruthenium-based hydrogenation catalyst aqueous solution, preparation method and application thereof

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Embodiment 1

[0044]This embodiment provides an aqueous solution of a ruthenium-based hydrogenation catalyst, including 4.5 g of ruthenium as an active component, 0.43 g of zinc as a first auxiliary agent, and 0.001 g of platinum as a second auxiliary agent;

[0045] The preparation method of above-mentioned ruthenium-based hydrogenation catalyst aqueous solution, comprises the steps:

[0046] 1) adding ruthenium chloride, zinc sulfate and platinum chloride to water at room temperature to prepare a metal salt solution, the mass fraction of metal ruthenium in the metal salt solution is 4.5%, and the mass fraction of metal zinc is 0.43%, The mass fraction of metallic platinum is 0.001%;

[0047] 2) 100g of the above-mentioned metal salt solution is added in the reactor, then 100g of sodium hydroxide aqueous solution is added in the metal salt solution (the mass fraction of sodium hydroxide in the sodium hydroxide aqueous solution is 10%), and the pH value of the mixed solution is controlled t...

Embodiment 2

[0067] This embodiment provides an aqueous solution of a ruthenium-based hydrogenation catalyst, including 3.8 g of ruthenium as an active component, 0.48 g of zinc as a first auxiliary agent, and 0.001 g of platinum as a second auxiliary agent;

[0068] The preparation method of above-mentioned ruthenium-based hydrogenation catalyst aqueous solution, comprises the steps:

[0069] 1) At room temperature, 8.62g ruthenium chloride, 1.185g zinc sulfate and 0.0017g platinum chloride were added to 90.19g water to prepare a metal salt solution. The mass fraction of metal ruthenium in the metal salt solution was 3.8%. The mass fraction of zinc is 0.48%, and the mass fraction of metallic platinum is 0.001%;

[0070] 2) the above-mentioned metal salt solution is added in the reactor, and then 85g of sodium hydroxide aqueous solution (the mass fraction of sodium hydroxide in the sodium hydroxide aqueous solution is 12%) is added in the metal salt solution, and the pH value of the mixed ...

Embodiment 3

[0077] This embodiment provides an aqueous solution of a ruthenium-based hydrogenation catalyst, including 4.2 g of ruthenium as an active component, 0.4 g of zinc as a first auxiliary agent, and 0.0014 g of platinum as a second auxiliary agent;

[0078] The preparation method of above-mentioned ruthenium-based hydrogenation catalyst aqueous solution, comprises the steps:

[0079] 1) adding ruthenium chloride, zinc sulfate and platinum chloride to water at room temperature to prepare a metal salt solution, the mass fraction of metal ruthenium in the metal salt solution is 4.2%, and the mass fraction of metal zinc is 0.4%, The mass fraction of metallic platinum is 0.0014%;

[0080] 2) 100g of the above-mentioned metal salt solution is added into the reactor, then 100g of sodium hydroxide aqueous solution is added to the metal salt solution (the mass fraction of sodium hydroxide in the sodium hydroxide aqueous solution is 10%), and the pH value of the mixed solution is controlle...

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Abstract

The invention relates to the field of cyclohexene preparation through benzene hydrogenation, in particular to a ruthenium-based hydrogenation catalyst, a ruthenium-based hydrogenation catalyst aqueous solution, a preparation method and an application thereof. The ruthenium-based hydrogenation catalyst provided by the invention comprises an active component, a first auxiliary agent and a second auxiliary agent, the active component is ruthenium, the first auxiliary agent is zinc, the second auxiliary agent is platinum and/or iridium, the first auxiliary agent accounts for 5%-15% of the catalyst by mass, and the second auxiliary agent accounts for 0.01%-0.03% of the catalyst by mass. According to the ruthenium-based hydrogenation catalyst provided by the invention, the metal ruthenium is used as an active component, the metal zinc is used as the first auxiliary agent, and the metal platinum and/or iridium are/is used as the second auxiliary agent, so that the catalytic activity of the catalyst can be effectively improved, and meanwhile, relatively high benzene conversion rate and cyclohexene selectivity are also realized.

Description

technical field [0001] The invention relates to the field of preparing cyclohexene by hydrogenation of benzene, in particular to a ruthenium-based hydrogenation catalyst, an aqueous solution of the ruthenium-based hydrogenation catalyst, a preparation method and an application. Background technique [0002] Cyclohexene is an important organic intermediate, which is widely used in the production of adipic acid, nylon-6, nylon-66, polyamide and other fine chemicals, and has huge industrial economic value and broad market prospects. Since cyclohexene is widely used as a raw material, further development of a more economical and green production route of cyclohexene has been widely concerned. Benzene is cheap and abundant, and can be used to directly synthesize cyclohexene. However, from a thermodynamic point of view, the free energy of cyclohexene from benzene hydrogenation becomes much smaller than the free energy of cyclohexane. Therefore, in the reaction of hydrogenation o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/60C07C5/11C07C13/20
CPCB01J23/60C07C5/11C07C2523/60C07C2601/16C07C13/20Y02P20/52
Inventor 刘国良陈学伟令狐亚九王记才
Owner 内蒙古瑞翔拓创新材料有限公司
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