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A composite gasoline desulfurizer loaded with heteropolyacid ionic liquid and its application

A technology for loading heteropolyacids and ionic liquids, applied in the treatment of hydrocarbon oil, petroleum industry, refined hydrocarbon oil, etc., can solve the problems of difficult recovery and reuse, low catalytic efficiency, small specific surface area, etc. Good removal effect and mild reaction conditions

Active Publication Date: 2018-09-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical desulfurization applications, soluble heteropolyacid ionic liquids are difficult to separate and recycle, while insoluble heteropolyacid ionic liquids have a small specific surface area (2 g -1 ), the catalytic efficiency is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Composite gasoline desulfurizer: preparation of N-methylimidazolium phosphotungstate @MILs and its application in gasoline desulfurization

[0023] (1) Weigh 0.30g of heteropolyacid ionic liquid: N-methylimidazolium phosphotungstate (~0.1mmol) and add it to an appropriate amount of water. Under vigorous stirring, add 3g of MILs (specifically MIL-101, in which metal The ions are chromium ions, the organic ligand is terephthalic acid), and stirred at room temperature for 12 hours, so that N-methylimidazolium phosphotungstate can be fully dispersed and impregnated on the MILs. Stop stirring and centrifuge to remove the liquid. After washing with ethanol for 3 times, the obtained solid is placed in a vacuum oven and dried in vacuum at 150°C for 10 hours to obtain a composite gasoline desulfurizer: N-methylimidazolium phosphotungstate @MILs.

[0024] (2) Take 10 g of gasoline with a sulfur content of about 50 ppm, and add 50 mg of the composite gasoline desulfurizer prepared...

Embodiment 2

[0026] Composite gasoline desulfurizer: preparation of N-ethylimidazolium phosphotungstate@PCNs and its application in gasoline desulfurization

[0027] (1) Weigh 1.19g of heteropolyacid ionic liquid: N-ethylimidazolium phosphotungstate (~0.4mmol) and add it to an appropriate amount of water. Under vigorous stirring, add 3g of PCNs (specifically HKUST-1, in which the metal The ions are copper ions, the organic ligand is trimesic acid), and stirred at room temperature for 12 hours to fully disperse and impregnate N-ethylimidazolium phosphotungstate on HKUST-1. Stop stirring and centrifuge to remove the liquid, wash with ethanol for 3 times, put the obtained solid into a vacuum oven, and dry it under vacuum at 150°C for 10 hours to obtain a composite gasoline desulfurizer: N-ethylimidazolium phosphotungstate @PCNs.

[0028] (2) Take 10 g of gasoline with a sulfur content of about 50 ppm, under stirring, add 90 mg of the composite gasoline desulfurizer prepared in step (1), the o...

Embodiment 3

[0030] Composite gasoline desulfurizer: preparation of N-butylimidazolium phosphotungstate @IRMOFs and its application in gasoline desulfurization

[0031] (1) Weigh 1.50g of heteropolyacid ionic liquid: N-butylimidazolium phosphotungstate (~0.5mmol) and add it to an appropriate amount of water. Under vigorous stirring, add 3g of IRMOFs (specifically IRMOFs-1, in which the metal The ions are zinc ions, and the organic ligand is terephthalic acid), and stirred at room temperature for 12 hours to fully disperse and impregnate N-butylimidazolium phosphotungstate on IRMOFs-1. Stop stirring and centrifuge to remove the liquid. After washing with ethanol for 3 times, the obtained solid is placed in a vacuum oven and dried in vacuum at 150°C for 10 hours to obtain a composite gasoline desulfurizer: N-butylimidazole phosphotungstate @IRMOFs.

[0032] (2) Take 10 g of gasoline with a sulfur content of about 50 ppm, and add 200 mg of the composite gasoline desulfurizer prepared in step ...

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Abstract

The invention discloses a composite gasoline desulfurizing agent loading heteropoly acid ionic liquid and application thereof and belongs to the technical field of oil processing. The composite gasoline desulfurizing agent is prepared loading heteropoly acid ionic liquid to MOFs (metal organic frameworks) by means of impregnation, wherein 10-50% by weight of the heteropoly acid ionic liquid is loaded in the MOFs; the MOFs used herein have the advantages such as structural stability, large specific surface area and pore diameter rule adjustability, and the problems of a conventional support such as low loading capacity, non-uniform distribution, proneness to catalyst loss, and proneness to active point poisoning; by introducing the heteropoly acid ionic liquid, it is possible to effectively catalyze oxidative sulfone-forming reaction of various thiophenic sulfides and it is possible to significantly improve desulfurization effect. In specific gasoline desulfurization, the composite gasoline desulfurizing agent has the advantages such as mild reaction conditions, good removal effect, low oil loss, zero significant effect on oil quality, and good reusability.

Description

technical field [0001] The invention belongs to the technical field of oil product processing, and in particular relates to a compound gasoline desulfurizer loaded with heteropolyacid ionic liquid and its application. Background technique [0002] With the rapid development of the economy and the improvement of people's living standards, the number of motor vehicles in the country has increased significantly. By the end of June 2015, the number of motor vehicles in my country had reached 271 million. As we all know, the existence of sulfide in gasoline will cause great harm, such as mercaptan, which can make gasoline produce unpleasant smell, reduce the quality of gasoline, and corrode the engine. Sulfur in gasoline produces sulfur oxides (SO X ), the most important of which is sulfur dioxide (SO 2 ) is the direct cause of acid rain. In addition, SOx in motor vehicle exhaust will cause irreversible poisoning of exhaust gas conversion catalysts, and cause damage to the per...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G29/00
CPCC10G29/00C10G2300/202C10G2400/02
Inventor 于英豪袁媛杨婉欣游高雄石卓王乐夫李雪辉
Owner SOUTH CHINA UNIV OF TECH
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