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Supported catalyst, its preparation and use in hydrodesulphurization and olefin-reducing techniques for gasoline

A supported catalyst and catalyst technology, used in the refining of hydrocarbon oil, petroleum industry, etc., to achieve the effect of easier separation and easy operation

Active Publication Date: 2005-11-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Catalyst preparation method is simple and easy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0017] The preparation method of the catalyst of the present invention comprises dissolving the ionic liquid with an organic solvent, preparing a solution with a concentration of 15-25% by mass to impregnate the carrier, and then drying to remove the solvent.

[0018] Described organic solvent is selected from C 6 ~C 8 aromatic hydrocarbons, dichloromethane or ether, preferably benzene, toluene, dichloromethane or ether. During impregnation, the liquid / solid ratio of the impregnating liquid to the carrier is 1.0-5.0:1, preferably 1.5-3.0:1. The immersion is preferably carried out under stirring, the immersion temperature is 20-40° C., and the time is preferably 3-8 hours. The impregnation can be carried out several times so that the catalyst contains an appropriate amount of ionic liquid. After the impregnation is completed, the obtained solid is dried, and the solvent is removed to obtain the catalyst.

[0019] The method for desulfurizing and reducing olefins in gasoline...

example 1

[0025] (1) Preparation of supported catalyst.

[0026] Aluminum trichloride and pyridine hydrochloride [(C 5 h 10N) HCl] was mechanically mixed at a molar ratio of 2:1 at 25° C. for 30 minutes to obtain a clear ionic liquid a in a liquid state. Dissolve the ionic liquid a completely with dichloromethane, and prepare a dichloromethane solution with a concentration of 20% by mass. Take 20 milliliters of the solution and add it to 10.0 grams of silicon dioxide powder under stirring, and stir for 4 hours. The specific surface area is 373 meters 2 / g, the pore volume is 0.90 ml / g. After filtering, the obtained solid was impregnated with 20 ml of ionic liquid a in dichloromethane solution, filtered, and then the impregnated solid was dried at 80° C. under reduced pressure for 4 hours, and the dichloromethane solvent was removed to obtain the loaded ionic liquid a The solid catalyst A. The mass of catalyst A is 12.3 grams, which contains 18.7% by mass of ionic liquid a and 81.3%...

example 2

[0030] (1) Preparation of supported catalyst.

[0031] Aluminum trichloride and 1-butylpyridine hydrochloride [1-Bu(C 5 h 10 N) HCl] was mechanically mixed at a molar ratio of 2:1 at 25° C. for 30 minutes to obtain a clear ionic liquid b in a liquid state. After completely dissolving the ionic liquid b with ether, a ether solution with a concentration of 20% by mass was prepared. 20 milliliters of the solution was taken and added to 10.0 grams of activated carbon particles under stirring, and stirred for 4 hours. The specific surface of the activated carbon particles used is 1202 m 2 / g, the pore volume is 0.56 ml / g. Stir and filter, repeat the above impregnation and filtration steps twice for the obtained solid, dry the obtained solid at 80°C for 4 hours under reduced pressure, remove the ether solvent, and obtain solid catalyst B supporting ionic liquid b. The mass of catalyst B is 14.8 grams, which contains 32.4% by mass of ionic liquid b and 67.6% by mass of activated...

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PUM

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Abstract

A supported catalyst contains ionic liquor of 10-40 mass percent and carrier of 60-90 mass percent. Said ionic liquor prepared by the reaction of Lewis base and Lewis acid, said Lewis base being amine salt of the general formula NRnH4-nCl, alkyl phosphonate of the general formula PR'xH3-x.HCl, 1, 3 - dial alkyl imidazole hydrochlorate, pyridine hydrochlorate or alkyl substituted pyridine hydrochlorate, in the said general formula, R being the alkyl of C1-C24, n being the integral number of 1-4, R' being the aryl of C6-C8, x being the integral number of 1-3; and said Lewis acid being the halide of aluminium, ferrum, zinc, copper, boron or phosphor, the mole ratio of Lewis acid and Lewis base is 1-5: 1. And the carrier is bergmeal, bentonite, silica dioxide, active carbon or silica-alumina molecular sieve. The catalyst has a perfect effect on the catalytic-cracking of gasoline desulfurising and reducing olefin, and can generate part of fraction of fuel-oil.

Description

technical field [0001] The invention relates to a supported catalyst and its preparation method and its application method in gasoline desulfurization and olefin reduction, specifically, a supported catalyst with ionic liquid as the catalytic active component, its preparation and the use of the catalyst to carry out A method for desulfurizing and reducing olefins in gasoline. Background technique [0002] With the increasingly stringent environmental protection requirements, the clean gasoline standards implemented in my country stipulate that the olefin content in gasoline should not exceed 35% by volume, and the sulfur content should not exceed 800μg / g. However, more than 80% of gasoline products in my country are FCC gasoline, and the sulfur content and olefin content are too high. Excessive olefin content will affect the stability of gasoline and the use of the engine. Excessive sulfur content will significantly increase the emission of SOX and particulate matter in the...

Claims

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Application Information

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IPC IPC(8): C10G29/00
Inventor 黄蔚霞李云龙汪燮卿
Owner CHINA PETROLEUM & CHEM CORP
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