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Preparation method of copper hydrogenation catalyst

A hydrogenation catalyst and copper-based technology, which is applied in the technical field of hydrogenation catalysts, can solve problems such as higher requirements and distance, and achieve the effects of superior performance, stable composition and superior reaction activity.

Pending Publication Date: 2021-11-16
濮阳圣恺环保新材料科技股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Catalysts prepared by the above method can meet the needs of production, but there is still a distance from higher requirements

Method used

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  • Preparation method of copper hydrogenation catalyst
  • Preparation method of copper hydrogenation catalyst
  • Preparation method of copper hydrogenation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for preparing a copper-based hydrogenation catalyst, comprising the steps of:

[0026] 1) Weigh 120.0g Cu(NO 3 ) 2 ·3H 2 O, 60g Mn(NO 3 ) 2 and 40g Zn(NO 3 ) 2 ·6H 2 O dissolved in 2000mlH 2 O is made into mixed salt solution; under stirring condition, mixed salt solution is added alkali solution (alkali solution is dissolved in 2000ml H by 250g 25% ammoniacal liquor 2 Obtained in O), carry out precipitation reaction in 50 ℃ water bath 10h, after reaction finishes, filter, wash precipitation with deionized water to remove impurity ion, obtain corresponding hydroxide precipitation;

[0027] 2) Mix the precipitated hydroxide obtained in the above step 1) with 3.2 g of sodium hydroxide solid to obtain a solid phase mixture;

[0028] 3) Add 30ml of deionized water at 60°C to the solid phase mixture, stir vigorously to mix, add 0.72g of aluminum powder paste, continue to stir for 60s to mix, and then maintain at 60°C for 8h;

[0029] 4) Transfer the mainta...

Embodiment 2

[0032] The difference between this example and Example 1 is that the amount of sodium hydroxide added in step 2) is 1.6 g, and 0.36 g of aluminum powder paste is added in step 3) to obtain a copper-based hydrogenation catalyst Cat-02.

Embodiment 3

[0034] The difference between this example and Example 1 is that the amount of sodium hydroxide added in step 2) is 6.4g, and 1.44g of aluminum powder paste is added in step 3), and the alkaline solution used in step 1) is 10% sodium hydroxide solution (the molar number of sodium hydroxide is the same as that of ammonia water) to prepare copper-based hydrogenation catalyst Cat-03.

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Abstract

The invention relates to a preparation method of a copper hydrogenation catalyst, which comprises the following steps: adding a mixed salt solution of soluble copper salt and other metal soluble salts into an alkali solution to prepare corresponding hydroxide precipitate, filtering, washing with water, uniformly mixing with a sodium hydroxide solid phase, adding warm water and aluminum powder paste into the mixed material, and uniformly stirring, and maintaining for a certain time at a certain temperature, then transferring into a still kettle for treatment, then replacing sodium ions in the system through hydrothermal treatment, and finally drying and roasting to obtain the copper-based catalyst. The copper-based catalyst prepared by the method has the characteristics of small stacking density, large porosity, high activity and multiple catalytic functions, and is particularly suitable for and simultaneously used as a catalyst for preparing ethylene glycol by hydrogenation of dimethyl oxalate, preparing butanediol by hydrogenation of dimethyl maleate / dimethyl succinate, preparing 1, 4-cyclohexanedimethanol by hydrogenation of 1, 4-cyclohexanedicarboxylic acid dimethyl ester, preparing 2-methyl furan by hydrogenation of furfural / furfuryl alcohol, and the like.

Description

technical field [0001] The invention belongs to the technical field of hydrogenation catalysts, and in particular relates to a preparation method of a multifunctional copper-based hydrogenation catalyst, which is particularly suitable and can be used simultaneously for hydrogenation of dimethyl oxalate to produce ethylene glycol and dimethyl / butyl maleate. Hydrogenation of dimethyl diacid to butanediol, hydrogenation of dimethyl 1,4-cyclohexanedicarboxylate to 1,4-cyclohexanedimethanol, and hydrogenation of furfural or furfuryl alcohol to 2-methylfuran hydrogenation catalyst. Background technique [0002] There are many preparation methods for copper-based hydrogenation catalysts, most of which are to uniformly mix or highly disperse the active ingredient copper and additives on zinc oxide, aluminum oxide, silicon oxide, chromium oxide and other carriers through impregnation, precipitation and other techniques, such as CuO-ZnO, CuO-Al 2 o 3 、CuO-Cr 2 o 3 , CuO / SiO 2 Ca...

Claims

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Application Information

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IPC IPC(8): B01J23/889B01J35/10C07C29/149C07C31/20C07C35/08C07D307/06
CPCB01J23/8892C07C29/149C07D307/06B01J35/635C07C31/202C07C31/207C07C35/08Y02P20/52
Inventor 赖玉龙陈玮刘千河陈志勇闫勇邢培智梁培彤连虎强魏月明董红明徐晓飞王士振
Owner 濮阳圣恺环保新材料科技股份有限公司
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