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Hydrogenation catalyst, preparation method and application thereof, and hydrogenation reaction method

A technology for hydrogenation catalysts and catalyst carriers, which is applied in chemical instruments and methods, preparation of hydroxyl compounds, metal/metal oxide/metal hydroxide catalysts, etc., and can solve the problem of lack of research on bifunctional catalysts, uneven dispersion, and easy production Agglomeration and other problems, to achieve the effect of high alcohol selectivity, high conversion rate of raw materials, good catalyst activity

Active Publication Date: 2018-07-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, so far, no bifunctional catalysts for the hydrogenation of esters containing partial acids have been investigated.
In addition, the existing carboxylic acid hydrogenation catalysts and ester hydrogenation catalysts usually use the traditional impregnation method to load the active components on the carrier. Although this method is easy to operate and easy to achieve commercial production, the active center During the process of adsorption on the carrier, it is easy to agglomerate and the dispersion is not uniform enough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] The preparation method of hydrogenation catalyst provided by the invention comprises the following steps:

[0019] (1) contacting the catalyst carrier with a solution containing a surfactant with an amine group, so that the surfactant is loaded on the catalyst carrier, and then dried to obtain a catalyst carrier solidly loaded with a surfactant;

[0020] (2) The catalyst carrier solidly loaded with surfactant is sequentially immersed in an impregnating solution containing chloroplatinic acid, an impregnating solution containing a water-soluble copper salt, and an impregnating solution containing an auxiliary compound, and drying after each immersion , and the last dried product is roasted, so that the surfactant is decomposed and the chloroplatinic acid, water-soluble copper salt and auxiliary agent compound are converted into platinum oxide, copper oxide and auxiliary agent, respectively.

[0021] The type of the catalyst carrier is not particularly limited in the pres...

Embodiment 1

[0048] This embodiment is used to illustrate the hydrogenation catalyst provided by the present invention, its preparation method and application, and the method of hydrogenation reaction.

[0049]1 g of bis(aminoethylacylmethylethyl) octadecylamine (C18N3, according to literature Wang, W.; Lu, W.S.; Jiang, L. Influence of pH on the aggregation morphology of a novel surfactant with single hydrocarbon chain and multi -amine headgroups.J.Phys.Chem.B.2008,112,1409-1413 prepared by the method disclosed, the same below) was added to 150mL deionized water and stirred evenly to obtain a solution containing surfactant. Add 15g of silicon dioxide to the above-mentioned surfactant-containing solution at a temperature of 40°C and stir for 20 hours, then use a Buchner funnel to carry out suction filtration, and the isolated solid product is rinsed with deionized water, and then at 50 and drying at ℃ for 5 hours to obtain a catalyst carrier solidly loaded with surfactant. Prepare a chloro...

Embodiment 2

[0052] This embodiment is used to illustrate the hydrogenation catalyst provided by the present invention, its preparation method and application, and the method of hydrogenation reaction.

[0053] Add 1 g of bis(aminoethylacylmethylethyl) octadecylamine (C18N3) into 150 mL of deionized water and stir evenly to obtain a solution containing a surfactant. Add 10g of silicon dioxide to the above surfactant solution at 40°C and stir for 20 hours, then use a Buchner funnel to carry out suction filtration, and rinse the isolated solid product with deionized water, then place it at 50°C Drying for 5 hours under the hood to obtain a catalyst carrier solidly loaded with surfactant. Prepare a chloroplatinic acid solution with a concentration of 0.00086mol / L. The above-mentioned catalyst carrier immobilized with surfactant was immersed in the above-mentioned chloroplatinic acid solution with an equal volume for 5 hours, and then dried overnight at 120° C. to obtain Sample 1. Add sample...

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Abstract

The invention provides a hydrogenation catalyst, a preparation method and application thereof, and a hydrogenation reaction method. The preparation method of the hydrogenation catalyst comprises the steps of: (1) contacting a catalyst carrier with a solution containing an amino-carrying surfactant, and performing drying to obtain a catalyst carrier fixedly loaded with a surfactant; and (2) steeping the catalyst carrier fixedly loaded with the surfactant in a chloroplatinic acid containing steeping solution, a water-soluble copper salt containing steeping solution and an assistant compound containing steeping solution in order, conducting drying, then performing roasting to decompose the surfactant and convert the chloroplatinic acid, the water-soluble copper salt and the assistant compound into platinum oxide, copper oxide and an assistant respectively. The hydrogenation catalyst obtained by the method can achieve high raw material conversion rate and alcohol selectivity when it is used for hydrogenation reaction of a carboxylic acid containing ester compound, and is particularly suitable for co-production of cyclohexanol and ethanol from acetic acid containing cyclohexyl acetate as the reaction raw material.

Description

technical field [0001] The invention relates to a method for preparing a hydrogenation catalyst, a hydrogenation catalyst obtained by the method, an application of the hydrogenation catalyst in the hydrogenation reaction of ester compounds and a method for the hydrogenation reaction. Background technique [0002] Both cyclohexanol and ethanol are important chemical raw materials and solvents. Cyclohexanol is mainly used for dehydrogenation of cyclohexanone, and cyclohexanone is not only the main intermediate for the further production of nylon 6 and nylon 66, but also widely used in paints, pesticides, dyes, aviation lubricants, grease, wax, Solvent for film removal, decontamination, spot removal, etc. Ethanol is not only a raw material for synthetic esters and other chemical products, but also widely used as a fuel additive for gasoline. [0003] The main method of industrially synthesizing ethanol is the direct hydration of ethylene, but when this method is used to prepa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89C07C31/08C07C35/08C07C29/149
Inventor 夏玥穜郜亮温朗友宗保宁慕旭宏俞芳
Owner CHINA PETROLEUM & CHEM CORP