Preparation method of solid superacid catalyst used for esterification of acid type anti-wear agent

A technology of solid super acid and anti-wear agent, which is applied in the preparation of carboxylate, the preparation of organic compounds, catalysts for physical/chemical processes, etc., can solve the problems of complex impurities, environmental pollution, dark color, etc., and achieve low production costs. , The effect of more recycling and high catalyst activity

Active Publication Date: 2016-05-11
JIANGXI SILINCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is in order to overcome the problem in the prior art, thereby provide a kind of method for preparing fatty acid ester by solid superacid catalyzed acidic antiwear agent, the fatty acid ester antiwear agent produced by this method has low temperature fluidity, good lubrication It solves the problems of complex impurities, low purity, dark color and environmental pollution caused by the use of liquid acid in traditional production. It is a low-cost, high esterification rate, high product yield, simple post-processing, and environmental protection. , efficient production methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0012] This example adopts the preparation method of acid-type anti-wear agent in solid super acid as catalyst condition esterification

[0013] (1) Solid superacid SO 4 2- / TiO 2 -Al 2 o 3 / La 3+ Catalyst preparation

[0014]In a 500L container, put 9.5kg of titanium tetrachloride in the kettle, add 300kg of distilled water to dilute, then add 10kg of calcined and pulverized alumina into it, and after fully impregnated, add 12% (mass) ammonia water to adjust PH makes it between 8-9. After the precipitation no longer increases, cool down to 0°C for aging, filter after 48 hours, wash with deionized water, and use 0.1mol / L AgNO 3 Titration is detected until there is no chloride ion or the conductivity is not greater than 200us / cm. Baked the precipitate at 100°C for 6 hours, ground it into powder and sieved it with 100 meshes, soaked it in 300 kg of concentrated sulfuric acid containing 1.0 mol / L and contained 3 kg of lanthanum chloride for 8 hours, filtered and dried it,...

example 2

[0017] This example adopts the preparation method of acid-type anti-wear agent in solid super acid as catalyst condition esterification

[0018] (1) Solid superacid SO 4 2- / TiO 2 -Al 2 o 3 / La 3+ Catalyst preparation

[0019] In a 500L container, dilute 12kg of titanium sulfate solution with 300L of ionized water, then add 8kg of calcined and pulverized alumina into it, after fully impregnated, then add 12% ammonia water, adjust the pH to 8-9 between. After the precipitation no longer increases, cool down to 0°C for aging, filter after 48 hours, wash the precipitate with deionized water, and titrate with 0.1mol / L AgNO3 until there is no chloride ion or no more than 200us / cm by conductivity. Baked the precipitate at 100°C for 6 hours, ground it into powder and sieved it with 100 meshes, soaked it in 300kg of concentrated sulfuric acid containing 1.25mol / L and contained 5kg of lanthanum chloride for 6 hours, dried it by suction filtration, and then activated it in a muff...

example 3

[0022] This example adopts the preparation method of acid-type anti-wear agent in solid super acid as catalyst condition esterification

[0023] (1) Solid superacid SO 4 2- / TiO 2 -Al 2 o 3 / La 3+ Catalyst preparation

[0024] In a 500L container, dilute 9.5kg of titanium chloride with 300kg of ionized water, and then add 5kg of calcined and pulverized alumina into it. After fully impregnated, add 12% (mass) ammonia water to adjust the pH Between 8-9. After the precipitation no longer increases, cool down to -5°C for aging, filter after 36 hours, wash the precipitate with deionized water, and titrate with 0.1mol / L AgNO3 until there is no chloride ion or no more than 200us / cm by conductivity. Baked the precipitate at 100°C for 6 hours, ground it into powder and sieved it with 100 meshes, soaked it in 300kg of concentrated sulfuric acid containing 1.0mol / L and contained 3kg of lanthanum nitrate for 8h, filtered and dried it, and then activated it in a muffle furnace at 45...

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PUM

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Abstract

The present invention discloses a preparation method of an ester type anti-wear agent, relates to the preparation field of fatty acid esterification catalysts, and aims to solve the problems of incomplete reaction, low product purity, many byproducts and deep product color in the process of formation of monoesters from fatty acids. A solid superacid SO4<2-> / TiO2-Al2O3 / La<3 +> prepared by the ways of low temperature aging, rare-earth modification, active carrier loading and the like is used as a catalyst, and when the solid superacid SO4<2-> / TiO2-Al2O3 / La<3 +> is used for esterification of the fatty acids, high purity and high yield fatty acid esters can be obtained. The solid superacid SO4<2-> / TiO2-Al2O3 / La<3 +> has the advantages of being easy in separation after the reaction, reusable, non-pollution to equipment and environmental, and the like. The solid superacid as the catalyst is suitable for mass production of the fatty acid monoesters of different components and contents.

Description

technical field [0001] The invention relates to a production method of using a solid superacid to synthesize an ester type antiwear agent, and relates to the field of fatty acid esterification catalysts. Background technique [0002] As countries all over the world pay more and more attention to environmental protection, in order to reduce the emission pollution of diesel vehicles, the production of high-quality clean diesel has become the development direction of the modern oil refining industry. This kind of diesel generally has the characteristics of low sulfur content, low aromatics content, high cetane number, and light distillate. Since the harsh hydrodesulfurization process is commonly used in the production of low-sulfur diesel oil, the content of polar oxygen-containing and nitrogen-containing compounds and polycyclic and bicyclic aromatic hydrocarbons in diesel oil is also reduced, thereby reducing the natural lubrication performance of diesel oil and making it Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C67/08C07C69/003B01J27/053
CPCB01J27/053C07C67/08C07C69/003
Inventor 廖维林雷志伟钟前熊云奎芮培欣范乃立夏剑辉谢贤清
Owner JIANGXI SILINCO
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