Hydrogenation catalyst, preparation method and application thereof, and method for preparing succinic anhydride through maleic anhydride hydrogenation

A hydrogenation catalyst and catalyst technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc. Advanced problems, to achieve the effect of simplifying the production operation process, saving energy consumption and reducing production operation costs

Pending Publication Date: 2022-05-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the activity of the hydrogenation catalyst existing in the prior art and the selectivity of succinic anhydride to be further improved, and the catalyst cost is high, the technical process is complicated, and the defects that cannot be applied to continuous large-scale production provide a A hydrogenation catalyst, its preparation method and application, and a method for preparing succinic anhydride from maleic anhydride hydrogenation, the catalyst has excellent catalytic activity and succinic anhydride selectivity, and the catalyst cost is low, the process is simple, and can be applied to continuous large-scale mass production

Method used

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  • Hydrogenation catalyst, preparation method and application thereof, and method for preparing succinic anhydride through maleic anhydride hydrogenation
  • Hydrogenation catalyst, preparation method and application thereof, and method for preparing succinic anhydride through maleic anhydride hydrogenation

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Embodiment approach

[0073] According to a preferred embodiment of the present invention, the method includes synthesizing the copper ammonium complex and the nickel ammonium complex in the next step: in the presence of the third solvent and ammonia, nickel salt, copper salt and the third The complexing agent is mixed together, and the pH value of the system is adjusted by feeding ammonia gas, and stirred at 40-90° C. until all solids are dissolved; The ratio is 1:0.5-2.

[0074] According to the present invention, there is no limitation on the conditions of the first mixing in step (1), as long as the mixing is uniform, for example, it can be mixed at room temperature (20±5° C.).

[0075] The present invention is not limited to the conditions of the aging, as long as it is beneficial to improve the activity of the catalyst and the selectivity of succinic anhydride; preferably, in step (2), the conditions of the aging include: the temperature is 40-90 ° C, the time for 12-36h.

[0076]According ...

preparation example 1

[0115] (1) Take by weighing 50.00g basic nickel carbonate (wherein the nickel content in terms of elements is 45% by weight), 9.16g of Cu (NO 3 ) 2 ·3H 2 O, 49.91g ethylenediaminetetraacetic acid, 500g deionized water and 100g of 25% by weight ammonia water are mixed, and feed ammonia gas to adjust the pH value of the solution to 10.5, and stir at 45°C until all solids are dissolved to obtain nickel-copper The solution of ammonia complex (that is, the solution of copper ammonia complex and nickel ammonia complex);

[0116] (2) Weigh 458.31g of silica sol (where SiO 2 content of 25% by weight) is mixed with the nickel-copper ammonia complex solution obtained in step (1) to obtain a mixed solution;

[0117] (3) aging the mixed solution at a temperature of 60° C. for 14 hours under stirring, and then drying at 120° C. for 12 hours to obtain a catalyst precursor;

[0118] (4) will contain 11.41g of Ce(NO 3 ) 3 ·6H 2 O in cerium nitrate solution (where Ce(NO 3 ) 3 ·6H 2 O...

preparation example 2

[0122] (1) get basic nickel carbonate (nickel content is the same as preparation example 1), Cu(NO 3 ) 2 ·3H 2 O, 49.91g ethylenediaminetetraacetic acid, 500g deionized water and 100g of 25% by weight ammonia water are mixed, and feed ammonia gas to adjust the pH value of the solution to 12, and stir at 70°C until all solids are dissolved to obtain nickel-copper The solution of ammonia complex (that is, the solution of copper ammonia complex and nickel ammonia complex);

[0123] (2) Get silica sol (same as preparation example 1) and the nickel-copper ammonia complex solution that step (1) obtains and mix, obtain mixed liquor;

[0124] (3) aging the mixed solution at a temperature of 90° C. for 12 hours under stirring, and then drying at 110° C. for 15 hours to obtain a catalyst precursor;

[0125] (4) will contain 11.41g of Ce(NO 3 ) 3 ·6H 2The cerium nitrate solution of O (same as Preparation Example 1) is saturated impregnated described catalyst precursor, obtains matr...

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Abstract

The invention relates to the technical field of catalysts, in particular to a hydrogenation catalyst, a preparation method and application thereof and a method for preparing succinic anhydride through maleic anhydride hydrogenation, the catalyst comprises a carrier and active components loaded on the carrier, the active components contain Ni elements, Cu elements and Ce elements, and the carrier contains SiO2; in the catalyst, on the basis of the total weight of the catalyst and in terms of oxide, the content of the Ni element is 10-40 wt%, the content of the Cu element is 1-5 wt%, the content of the Ce element is 1-8 wt%, and the content of the carrier is 47-88 wt%. The catalyst provided by the invention has excellent catalytic activity and succinic anhydride selectivity, is low in cost and simple in process, and can be applied to continuous large-scale production.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a hydrogenation catalyst, a preparation method and application thereof, and a method for preparing succinic anhydride by hydrogenating maleic anhydride. Background technique [0002] Succinic anhydride, also known as succinic anhydride, is an important organic synthesis intermediate and fine chemical raw material, and is widely used in food, surfactant, paint, medicine, agriculture, plastics and other fields. Due to its unique molecular structure, succinic anhydride can undergo hydrolysis, alcoholysis, esterification, halogenation and other reactions. With the development of my country's pesticide, pharmaceutical and petrochemical industries, the demand for succinic anhydride is increasing year by year, especially It is high-purity succinic anhydride with high external dependence. [0003] At present, the production methods of succinic anhydride used in industry include: biolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83C07D307/60
CPCB01J23/83B01J23/002C07D307/60B01J2523/00B01J2523/17B01J2523/3712B01J2523/41B01J2523/847
Inventor 冯海强赵开径朱跃辉高继东
Owner CHINA PETROLEUM & CHEM CORP
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