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A kind of hydrogenation saturation method of aromatics

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, mild reaction conditions, and long service life

Active Publication Date: 2019-07-12
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • 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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  • A kind of hydrogenation saturation method of aromatics
  • A kind of hydrogenation saturation method of aromatics

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 invention relates to a new method for hydrogenation saturation of aromatic hydrocarbons. The main steps are: under mild operating conditions (pressure lower than 3MPa, temperature lower than 80°C), oil containing aromatics and M / Al 2 o 3 Mix, pass hydrogen to a certain pressure, and react at a certain temperature. After the aromatics are completely hydrogenated and saturated, the reaction temperature will be room temperature, and the separated catalyst will be recovered. Catalyst M / Al 2 o 3 M in refers to one or any combination of noble metals such as Ru, Rh, Pd, Pt, Ir, and Al 2 o 3 It is an ordered mesoporous structure. The reaction condition of the invention is mild, and the catalyst exhibits high aromatic hydrogenation activity and 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 Patents(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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