Method of removing thiophene sulfides in fuel oil by adsorption of composite of Cu2O/SiO2-Al2O3-GO and aerogel

A technology of composite airgel and fuel oil, which is applied in the petroleum industry, processing hydrocarbon oil, refining hydrocarbon oil, etc., to achieve the effect of enhancing strength, improving adsorption performance, and good adsorption performance

Inactive Publication Date: 2018-11-02
ZHEJIANG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the above-mentioned problems existing in existing π-complex desulfurization adsorbents in the removal of thiophene sulfides in fuel oil, the purpose of the present invention is to provide a 2 O / SiO 2 -Al 2 o 3 -Graphene oxide composite airgel is a method for adsorbent to remove thiophene sulfides in fuel oil, Cu of the present invention 2 O / SiO 2 -Al 2 o 3 - Graphene oxide composite airgel adsorbent removes thiophene sulfides in fuel oil through π complex adsorption. It has the advantages of large adsorption capacity, easy regeneration and mild adsorption conditions.

Method used

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  • Method of removing thiophene sulfides in fuel oil by adsorption of composite of Cu2O/SiO2-Al2O3-GO and aerogel
  • Method of removing thiophene sulfides in fuel oil by adsorption of composite of Cu2O/SiO2-Al2O3-GO and aerogel
  • Method of removing thiophene sulfides in fuel oil by adsorption of composite of Cu2O/SiO2-Al2O3-GO and aerogel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～7

[0030] Examples 1-7: Cu with different silicon sources, aluminum sources, and copper sources 2 O / SiO 2 -Al 2 o 3 - Adsorption performance of graphene oxide composite airgel on thiophene sulfides in simulated gasoline

[0031] Cu with a silicon-copper molar ratio of 50, a silicon-aluminum molar ratio of 20, and a graphene oxide doping amount of 2‰ prepared by the sol-gel method 2 O / SiO 2 -Al 2 o 3 - In the graphene oxide composite airgel adsorbent, the silicon sources used include methyl orthosilicate, ethyl orthosilicate, and silica sol, the copper sources include copper nitrate and copper acetate, and the aluminum sources are aluminum nitrate and aluminum chloride (What is the reduction temperature and reduction time for preparing airgel here, because they are the influencing factors of the reaction, and the conditions should be clear). The prepared Cu 2 O / SiO 2 -Al 2 o 3 - Graphene oxide composite aerogel is used for penetration adsorption desulfurization experime...

Embodiment 8～12

[0040] Examples 8-12: Cu with different silicon-aluminum molar ratios 2 O / SiO 2 -Al 2 o 3 - Adsorption performance of graphene oxide composite airgel on thiophene sulfides in simulated gasoline

[0041] The silicon-copper molar ratio is 50:1, the silicon-aluminum molar ratio is 5, 10, 20, 50, and 100 respectively, and Cu with a graphene oxide doping amount of 2‰ is selected. 2 O / SiO 2 -Al 2 o 3 - graphene oxide composite airgel adsorbent, other conditions are the same as the Cu of embodiment 2 2 O / SiO 2 -Al 2 o 3 - Graphene oxide composite aerogel, for penetration adsorption experiments on thiophene sulfides in simulated gasoline. The operation of the breakthrough adsorption experiment is the same as in Examples 1-7, and the adsorption results are shown in Table 4.

[0042] Table 4 Cu with different silicon-aluminum molar ratios 2 O / SiO 2 -Al 2 o 3 - Adsorption performance of graphene oxide composite airgel on thiophene sulfides in simulated gasoline

[0043] ...

Embodiment 13～17

[0045] Examples 13-17: Cu with different silicon-to-copper molar ratios 2 O / SiO 2-Al 2 o 3 - Adsorption performance of graphene oxide composite airgel on thiophene sulfides in simulated gasoline

[0046] Select Cu with silicon-copper molar ratio of 10, 20, 50, 70, 100, silicon-aluminum molar ratio of 20, and graphene oxide doping amount of 2‰ 2 O / SiO 2 -Al 2 o 3 - graphene oxide composite airgel adsorbent, other conditions are the same as the Cu of embodiment 2 2 O / SiO 2 -Al 2 o 3 - Graphene oxide composite aerogel, for penetration adsorption experiments on thiophene sulfides in simulated gasoline. The operation of the breakthrough adsorption experiment is the same as in Examples 1-7, and the adsorption results are shown in Table 5.

[0047] Table 5 Cu with different silicon-copper molar ratios 2 O / SiO 2 -Al 2 o 3 - Adsorption performance of graphene oxide composite airgel on thiophene sulfides in simulated gasoline

[0048]

[0049] It can be seen from Tabl...

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Abstract

The invention discloses a method of removing thiophene sulfides in fuel oil by adsorption of composite of Cu2O/SiO2-Al2O3-GO and aerogel. Composite of Cu2O/SiO2-Al2O3-graphene oxide and aerogel is used as an adsorbent herein to fill a fixed-bed adsorbing device; simulation gasoline with thiophene sulfides is introduced under 0-100 DEG C at the air velocity of 1-10 h<-1>; simulation gasoline with asulfur concentration of 1 ppm and below is attained by adsorption. The composite of Cu2O/SiO2-Al2O3-graphene oxide and aerogel is utilized herein; Al3+ is introduced in aerogel silicon framework structure to generate L acid; lone-pair electrons on S atoms of the thiophene sulfides are of basicity, and the center of the L acid in aerogel substrate SiO2-Al2O3 can adsorb the thiophene compounds under acidic and basic action; synergy of pi complexing action and acidic-basic action helps further improve the adsorption of thiophene compounds; adsorbing effect is improved, and the sulfur concentration of the thiophene sulfides in the simulation gasoline may reach 1 ppm and below.

Description

technical field [0001] The invention belongs to the technical field of fuel oil processing, in particular to Cu 2 O / SiO 2 -Al 2 o 3 -GO composite airgel adsorption method for removing thiophene sulfides in fuel oil. 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 mainly includes hydrodesulfurization technology, alkylation desulfurization technology, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G25/00
CPCC10G25/003C10G2300/202
Inventor 刘少博张波周金兵陈飞帆卢永康潘飞苗蔡伟豪
Owner ZHEJIANG UNIV OF TECH
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