Synthesis of supported nano ruthenium-zirconium-tin composite oxide and application of supported nano ruthenium-zirconium-tin composite oxide in synthesis of benzylamine through amination of benzaldehyde

A technology for synthesizing benzylamine and benzaldehyde, applied in the field of catalysis, can solve problems such as low yield of benzylamine, and achieve the effects of improving reaction yield, easy large-scale preparation, and increasing active centers

Active Publication Date: 2022-03-25
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ammonia is used as the reaction gas in the two preparation processes of benzaldehyde ammoniation and benzyl alcohol ammoniation, and the benzylamine yield of these two preparation processes is generally on the low side (75~84%)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take by weighing 0.2093g ruthenium trichloride, 0.2330g zirconium chloride, 0.3506g tin tetrachloride, be dissolved in the solution of 3ml ethanol and water respectively, wherein the ratio of ethanol and water is 1: 1, after fully dissolving, above-mentioned three Mix the two solutions, add 6.978 g of carrier mesoporous silica, and impregnate with stirring at room temperature for 12 hours. Afterwards, it was dried in an oven at 80°C for 12 hours, and finally fired in a muffle furnace at 400°C for 4 hours. Catalyst A is obtained.

Embodiment 2

[0030] Take by weighing 0.2093g ruthenium trichloride, 0.2330g zirconium chloride, 0.3506g tin tetrachloride, be dissolved in the solution of 3ml ethanol and water respectively, wherein the ratio of ethanol and water is 1: 1, after fully dissolving, above-mentioned three Mix the two solutions, add 5g α-Al 2 o 3 Carrier, impregnated with stirring at room temperature for 12 hours. Afterwards, it was dried in an oven at 80°C for 12 hours, and finally fired in a muffle furnace at 400°C for 4 hours. Catalyst B is obtained.

Embodiment 3

[0032] Take by weighing 0.2093g ruthenium trichloride, 0.2330g zirconium chloride, 0.3506g tin tetrachloride, be dissolved in the solution of 3ml ethanol and water respectively, wherein the ratio of ethanol and water is 4: 1, after fully dissolving, above-mentioned three Mix the two solutions, add 6.978 g of carrier mesoporous silica, and impregnate with stirring at room temperature for 12 hours. Afterwards, it was dried in an oven at 80°C for 12 hours, and finally fired in a muffle furnace at 400°C for 4 hours. Catalyst C is obtained.

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Abstract

The invention discloses synthesis of a supported nano ruthenium-zirconium-tin composite oxide and a method for synthesizing benzylamine by applying the supported nano ruthenium-zirconium-tin composite oxide to benzaldehyde amination benzylamine synthesis, benzaldehyde, an amination reagent and hydrogen are used as raw materials, and benzylamine is prepared through hydrogenation amination reaction under the action of a catalyst; the catalyst comprises an active component and a carrier, the active component is composite nano ruthenium-zirconium-tin oxide particles, and the molar ratio of Ru to Zr to Sn is (0.01-10): (1-20): (1-20); the carrier is at least one of aluminum oxide and silicon dioxide. The ruthenium-zirconium-tin composite oxide prepared by the invention is fine in grain, and the active center is increased; the carrier interacts with the metal composite oxide, so that the contact area with reactants is increased, and the reaction yield is increased; the preparation method is simple in process, easy to implement and easy for large-scale preparation.

Description

technical field [0001] The invention belongs to the field of catalysis, and specifically relates to the synthesis of a supported nanometer ruthenium-zirconium-tin composite oxide and its application in the amination of benzaldehyde to synthesize benzylamine. Background technique [0002] Benzylamine is a very important organic intermediate, which is widely used in the preparation of dyes, pesticides, medicines, and other chemicals, and can be widely used in synthetic drugs (medicine and pesticides), dyes, artificial resins, anti-corrosion inhibitors and functional Sexual additives, explosives, chemical reagents, CO 2 Absorbents, curing agents (stabilizers) for rubber and plastic curing, etc., such as the intermediates for the preparation of insecticides imidacloprid and acetamiprid, and also intermediates for the medicine sulfamepron. [0003] The methods of industrial production of benzylamine in my country mainly include: ammonolysis of halides, hydrogenation ammonia meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C209/26C07C211/27B01J23/62B01J35/02
CPCB01J23/002B01J35/023B01J23/624C07C209/26B01J2523/00B01J2523/41B01J2523/43B01J2523/48B01J2523/821B01J2523/31C07C211/27Y02P20/584
Inventor 黄家辉张少华
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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