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Oxidative desulfurization amphiphilic catalyst, and preparation method and applications thereof

An oxidative desulfurization and amphiphilic technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, refining with oxygenated compounds, etc., can solve the problems of organic acid separation, poor catalytic effect, small contact surface, etc., and achieve regeneration Convenience, good stability, and simple preparation

Inactive Publication Date: 2013-09-11
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The commonly used oxidative desulfurization system is organic peroxyacid system or hydrogen peroxide / organic acid system. The main disadvantage of this system is the use of organic acid, which leads to problems such as equipment corrosion and organic acid separation. Later, solid acid catalysis was developed, such as solid Compounds such as heteropoly acid and titanium dioxide are loaded, but due to the small contact surface between the sulfur-containing compound and the catalyst, the catalytic effect is poor. Later, scientists improved the mass transfer by ultrasonic and emulsion catalytic system, and the oxidative desulfurization effect was greatly increased. However, due to Ultrasonic equipment has not been widely used in industry, and the emulsion catalytic system has led to new problems such as separation and purification

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  • Oxidative desulfurization amphiphilic catalyst, and preparation method and applications thereof
  • Oxidative desulfurization amphiphilic catalyst, and preparation method and applications thereof
  • Oxidative desulfurization amphiphilic catalyst, and preparation method and applications thereof

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Embodiment 1

[0030] (1) In parts by weight, one part of graphene oxide was dissolved in 100 parts of water, ultrasonically dispersed for 3 hours, and then centrifuged in a centrifuge at 2000 rpm for 10 minutes to remove trace incompatible substances to obtain a 1% graphene oxide aqueous solution with a mass fraction.

[0031] (2) In parts by weight, dissolve 4 parts of polyether P123 in 100 parts of water, then add 10 parts of the graphene oxide aqueous solution prepared in step (1) and stir at 30°C for 1 hour, then add concentrated hydrochloric acid to make the hydrochloric acid of the mixed solution When the concentration reaches 2M, add 8.4 parts of tetraethyl orthosilicate (TEOS) to react at 40°C for 20h, and then age at 120°C for 24h. After suction filtration, the filter residue is dried at 60°C for 10h, and the dried solid is protected under nitrogen. Burn at 500°C for 10 hours to obtain the graphene-modified molecular sieve amphiphilic catalyst support S1-G10 (the value after G is th...

Embodiment 2

[0034] (1) In parts by weight, one part of graphene oxide was dissolved in 100 parts of water, ultrasonically dispersed for 3 hours, and then centrifuged in a centrifuge at 2000 rpm for 10 minutes to remove trace incompatible substances to obtain a 1% graphene oxide aqueous solution with a mass fraction.

[0035] (2) In parts by weight, dissolve 4 parts of polyether P123 in 100 parts of water, then add 10 parts of the graphene oxide aqueous solution prepared in step (1) and stir at 30°C for 1 hour, then add concentrated hydrochloric acid to make the hydrochloric acid of the mixed solution When the concentration reaches 2M, add 8.4 parts of tetraethyl orthosilicate (TEOS) to react at 40°C for 20h, and then age at 120°C for 24h. After suction filtration, the filter residue is dried at 60°C for 10h, and the dried solid is protected under nitrogen. Burn at 500°C for 10 hours to obtain the graphene-modified molecular sieve amphiphilic catalyst support S1-G10 (the value after G is th...

Embodiment 3

[0038] (1) In parts by weight, one part of graphene oxide was dissolved in 100 parts of water, ultrasonically dispersed for 2.5 hours, and then centrifuged in a centrifuge at 2500 rpm for 8 minutes to remove trace incompatible substances to obtain a 1% graphene oxide aqueous solution with a mass fraction.

[0039] (2) In parts by weight, dissolve 3 parts of polyether P123 in 80 parts of water, then add 15 parts of the graphene oxide aqueous solution prepared in step (1) and stir at 30°C for 1 hour, then add concentrated hydrochloric acid, which is the hydrochloric acid of the mixed solution When the concentration reaches 1M, add 8.4 parts of tetraethyl orthosilicate (TEOS), react at 40°C for 30h, and then age at 80°C for 48h. After suction filtration, the filter residue is dried at 100°C for 5h, and the dried solid is protected by argon. Burn at 500°C for 8 hours to obtain the graphene-modified molecular sieve amphiphilic catalyst support S2-G15.

[0040] The difference betwee...

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Abstract

The invention belongs to the field of oxidative desulphurization, especially to a preparation method and applications of an oxidative desulfurization amphiphilic catalyst. A preparation method of the oxidative desulfurization amphiphilic catalyst comprises the following steps: the oxidative desulfurization amphiphilic catalyst is obtained by loading an oxidative desulfurization catalyst on an amphiphilic catalyst carrier of a graphene modified mesoporous molecular sieve. The catalyst has a good emulsification effect, and helps to improve a desulfurization rate by increasing a contact surface of an oxidizing agent and a sulfide, with the desulfurization rate of 98% or more, and helps to make the sulfur content of fuel oil reduce to 10 ppm or less. The catalyst is used in oxidative desulphurization, is high in desulphurization efficiency and convenient to separate, and belongs to a green and energy-saving desulphurization technology.

Description

technical field [0001] The invention belongs to the field of oxidative desulfurization, in particular to a preparation method and application of an oxidative desulfurization amphiphilic catalyst. Background technique [0002] Organosulfur compounds in fuel oil are harmful substances, the generated SO x It will also pollute the environment and cause acid rain, which will also endanger people's health. In addition, it will also poison the three-way catalyst and reduce the working efficiency of the exhaust gas treatment system. Therefore, reducing the sulfur content in fuel will not only play a vital role in improving the emission of particulate matter from vehicles, but will also effectively increase the exhaust gas after-treatment system. service life. In view of this, many countries and regions in the world have successively promulgated standards for vehicle fuels. Faced with increasingly stringent restrictions on fuel sulfur content and the market demand for low-sulfur cl...

Claims

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Application Information

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IPC IPC(8): B01J31/18B01J31/26B01J31/16B01J31/02C10G27/12
Inventor 廖兵刘军邓理郭庆祥魏续瑞
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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