Method of removing thiophene sulfur from fuel oil by Ag2O/SiO2-Al2O3-graphene oxide composite aerogel

A graphene composite and aerogel technology, which is applied in chemical instruments and methods, petroleum industry, alkali metal compounds, etc., to achieve the effects of improving high temperature resistance, strengthening the skeleton structure, and improving adsorption performance

Inactive Publication Date: 2018-07-24
ZHEJIANG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of the above-mentioned problems existing in existing π complex adsorbents in the removal of thiophene sulfur in fuel oil, the object of the present invention is to provide a Ag with large adsorption capacity an

Method used

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  • Method of removing thiophene sulfur from fuel oil by Ag2O/SiO2-Al2O3-graphene oxide composite aerogel
  • Method of removing thiophene sulfur from fuel oil by Ag2O/SiO2-Al2O3-graphene oxide composite aerogel
  • Method of removing thiophene sulfur from fuel oil by Ag2O/SiO2-Al2O3-graphene oxide composite aerogel

Examples

Experimental program
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Effect test

Example

[0030] Examples 1-8: Ag of different silicon sources, silver source and aluminum source 2 O / SiO 2 -Al 2 O 3 -Graphene oxide composite aerogel for adsorption of thiophene sulfides in simulated gasoline

[0031] In the Ag prepared by sol-gel method 2 O / SiO 2 -Al 2 O 3 -In the graphene oxide composite aerogel, the silicon sources used are methyl orthosilicate, ethyl orthosilicate, and silica sol, the silver sources are silver nitrate, silver acetate, and the aluminum source is aluminum nitrate organic aluminum source. The finished Ag 2 O / SiO 2 -Al 2 O 3 -The graphene oxide composite aerogel is used for the penetration adsorption desulfurization experiment, the specific operation is as follows: in the fixed bed reactor, fill the bottom layer with an appropriate amount of absorbent cotton, and then fill with 1g of Ag 2 O / SiO 2 -Al 2 O 3 -Graphene oxide aerogel and appropriate amount of quartz sand. Before starting the adsorption experiment, fully wet the packed adsorbent with n-heptane...

Example

[0039] Examples 9-14: Ag with different molar ratios of silicon to aluminum 2 O / SiO 2 -Al 2 O 3 -Graphene oxide composite aerogel for adsorption of thiophene sulfides in simulated gasoline

[0040] Choose Ag with a silicon-silver molar ratio of 50:1 and a silicon-aluminum molar ratio of 25, 50, 75, 100, 125, 150 2 O / SiO 2 -Al 2 O 3 -Graphene oxide aerogel, a penetration experiment of thiophene sulfide in simulated gasoline. The penetrating adsorption experiment operation is the same as in Examples 1-8, and the adsorption results are shown in Table 4.

[0041] Table 4 Ag with different molar ratios of silicon to aluminum 2 O / SiO 2 -Al 2 O 3 Adsorption performance of graphene oxide composite aerogel for thiophene sulfide in simulated gasoline

[0042]

[0043] It can be seen from Table 4 that Ag with different molar ratios of silicon to aluminum 2 O / SiO 2 -Al 2 O 3 -Graphene oxide aerogels, with the decrease of the silicon-to-aluminum molar ratio, that is, the increase of the aluminum ...

Example

[0044] Examples 15-18: Ag with different molar ratios of silicon to silver 2 O / SiO 2 -Al 2 O 3 -Graphene oxide composite aerogel for adsorption of thiophene sulfides in simulated gasoline

[0045] Choose Ag with silicon-silver molar ratios of 10, 20, 50, 100 2 O / SiO 2 -Al 2 O 3 -Graphene oxide aerogel, a penetration experiment of thiophene sulfide in simulated gasoline. The penetrating adsorption experiment operation is the same as in Examples 1-8, and the adsorption results are shown in Table 5.

[0046] Table 5 Ag with different molar ratios of silicon to silver 2 O / SiO 2 -Al 2 O 3 -Graphene oxide composite aerogel for adsorption of thiophene sulfides in simulated gasoline

[0047]

[0048] It can be seen from Table 5 that Ag 2 O / SiO 2 -Al 2 O 3 -With the decrease of the molar ratio of silicon to silver, that is, the increase of the silver content of graphene oxide aerogel, the penetration adsorption capacity of thiophene and benzothiophene first increases and then decreases. Afte...

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Abstract

The invention relates to a method for removing thiophene sulfur from fuel oil by Ag2O/SiO2-Al2O3-graphene oxide composite aerogel and belongs to the technical field of fuel oil processing. The methodis characterized in that the Ag2O/SiO2-Al2O3-graphene oxide composite aerogel is prepared by taking silicon orthosilicate, tetraethyl orthosilicate, silica sol, water glass and the like as silicon sources, taking silver acetate, silver nitrate and the like as silver sources and taking aluminum nitrate, aluminum acetate and aluminum oxalate as aluminum sources and adopting a sol-gel and atmosphericpressure drying method. The Ag2O/SiO2-Al2O3-graphene oxide composite aerogel is quantitatively packed in a fixed bed adsorption device, simulated gasoline containing the thiophene sulfur is injectedat a certain temperature and airspeed, and the simulated gasoline after absorption is collected at an outlet in the lower end of a reaction device for chromatographic analysis. Results show that the Ag2O/SiO2-Al2O3-graphene oxide composite aerogel has good adsorption properties for the thiophene sulfur. The Ag2O/SiO2-Al2O3-graphene oxide composite aerogel absorbent in the method provided by the invention is simple in preparation method, low in cost, capable of reuse for many times, high in economic benefits, environmentally friendly, mild in absorption conditions and low in requirements for absorption equipment.

Description

technical field [0001] The invention belongs to the technical field of fuel oil processing, in particular to a kind of Ag with π complex adsorption 2 O / SiO 2 -Al 2 o 3 -Graphene oxide composite airgel desulfurization adsorbent and its preparation method and application in gasoline desulfurization. Background technique [0002] With the vigorous development of the automobile industry, the large amount of sulfide emissions from automobile exhaust not only makes environmental pollution more and more serious, but also threatens human health. Fuel cells also have very high requirements on the sulfur content in fuel oil. The presence of organic sulfides will poison the catalyst in the fuel cell electrodes, making the fuel cells unable to effectively convert the chemical energy in diesel gasoline into electrical energy. Therefore, the deep desulfurization of fuel oil has become the focus of global attention. [0003] At present, the desulfurization technology of fuel oil mainl...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30C10G25/00
CPCB01J20/20B01J20/06B01J20/08B01J20/103B01J20/28047C10G25/003C10G2300/202
Inventor 张波蔡伟豪潘飞苗刘少博周金兵
Owner ZHEJIANG UNIV OF TECH
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