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New method for hydrogenation saturation of aromatic hydrocarbons

A technology for hydrogenation of aromatics and aromatics, applied in the field of hydrogenation and saturation of aromatics, can solve problems such as irregular pore size distribution, and achieve the effects of easy separation and recovery, high service life, and reduced operating costs

Active Publication Date: 2018-01-26
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Ordered mesoporous alumina-supported catalysts can overcome the shortcomings of traditional alumina-supported catalysts such as irregular pore size distribution and insufficient acidity

Method used

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  • New method for hydrogenation saturation of aromatic hydrocarbons
  • New method for hydrogenation saturation of aromatic hydrocarbons

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Catalyst preparation:

[0023] a. Weigh 2.0g of P123 and dissolve it in 40ml of absolute ethanol, add dropwise 3ml of concentrated nitric acid with a mass concentration of 65%, add 4.08g of aluminum isopropoxide under vigorous stirring, and continue stirring for 5 Hour. Then, the resulting solution was evaporated to dryness of ethanol at 60°C and aged for 48 hours to obtain a pale yellow solid. The pale yellow solid was raised from room temperature to 400° C. at a heating rate of 1° C. / min in a muffle furnace, and calcined for 4 hours to obtain supported alumina.

[0024] b. Prepare the Ru precursor solution at 1% by mass, and load Ru on the above-mentioned alumina carrier by the equal volume impregnation method. With a heating rate of 5°C / min and a hydrogen flow rate of 60ml / g, the Ru / Al 2 o 3 Reduction, the reduced state metal catalyst A is obtained. The catalyst has an ordered mesoporous structure, and its pore shape is hexagonal, HR-TEM sees figure 1 .

Embodiment 2

[0028] Except for using the Rh precursor in step b, it was prepared by the same method as described in Example 1 to obtain a reduced metal catalyst B.

Embodiment 3

[0030] Except for using the Pd precursor in step b, it was prepared by the same method as described in Example 1 to obtain a reduced metal catalyst C.

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Abstract

The present invention relates to a new method for hydrogenation saturation of aromatic hydrocarbons. The main steps comprise: under mild operation conditions (the pressure is less than 3 MPa, and thetemperature is less than 80 DEG C), mixing an oil product containing an aromatic hydrocarbon and M / Al2O3, introducing hydrogen to achieve a certain pressure, carrying out a reaction at a certain temperature, reducing to a room temperature from the reaction temperature after the aromatic hydrocarbon is subjected to complete hydrogenation saturation, and recovering the separated catalyst, wherein Min the catalyst M / Al2O3 is one selected from Ru, Rh, Pd, Pt, Ir and other noble metals or a combination comprising two materials selected from Ru, Rh, Pd, Pt, Ir and other noble metals, and Al2O3 hasan ordered mesoporous structure. According to the present invention, the reaction conditions are mild, and the catalyst shows high aromatic hydrocarbon hydrogenation activity and high stability.

Description

technical field [0001] The invention relates to a method for hydrogenation and saturation of aromatic hydrocarbons, and more particularly relates to a method for hydrogenation and saturation of aromatic hydrocarbons under relatively mild conditions using a noble metal catalyst supported by ordered mesoporous alumina. Background technique [0002] The incomplete combustion of aromatic compounds in fuel produces a large amount of fine particulate matter (PM2.5), which is the main cause of air pollution. With the enhancement of people's awareness of environmental protection, in order to improve air quality, countries all over the world have strictly limited the content of aromatic hydrocarbons in fuel. The upcoming National V standard stipulates that the benzene content in gasoline is less than 1vol%, and the aromatics content is not higher than 35vol%; the aromatics content in diesel is not higher than 15vol%. With the continuous development of science and technology and econ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/52B01J23/42B01J23/44B01J23/46
Inventor 唐南方丛昱陈帅杜健许国梁吴春田张涛
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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