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Method for catalytically synthesizing fatty acid isopropyl ester

A technology for fatty acid isopropyl ester and isopropyl alcohol, applied in the field of catalytic synthesis of fatty acid isopropyl ester, can solve the problems of low reaction temperature, low product acid value, low esterification rate, etc., and achieves high catalyst activity, improved service life, The effect of low reaction temperature

Inactive Publication Date: 2018-12-28
杭州更蓝生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Chinese patent CN105218364A discloses a method for synthesizing fatty acid isopropyl ester. The catalyst is N-alkylpyrrolidone group methyl phosphate ionic liquid catalyst to synthesize fatty acid isopropyl ester. The water-carrying agent has the characteristics of short reaction time and high esterification rate, and the acid value of the produced product is small, but the catalyst is difficult to synthesize and purify, and it can be reused
[0007] It can be seen that at present, liquids such as sulfuric acid are used as catalysts in the production of isopropyl fatty acid esters, the equipment is severely corroded, the esterification rate is not high, and the product post-treatment is complicated.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Take a certain amount of carbon nanotubes with an outer diameter of 3nm, and add a mass fraction of 30% HNO 3 solution and 30ml mass fraction of 15% H 2 o 2 The solution was heated to reflux at 120° C. for 3 hours, taken out, cooled to room temperature, washed by conventional methods, suction filtered, and dried to obtain surface-modified carbon nanotubes;

[0027] II. Dissolve zirconium nitrate, lanthanum nitrate and cetyltrimethylammonium bromide in 30ml of deionized water respectively, mix and stir for 1.5h, then add H2O with a concentration of 0.95mol / L 2 SO 4 Mix the solution with 2.05mol / L HCl, finally add 100mg of the surface-modified carbon nanotubes obtained by the above I, stir evenly at 35-40°C, heat at 115°C for 3-5h, cool to room temperature and pass After conventional methods of washing, suction filtration, drying, and roasting, SO with a high specific surface area is obtained. 4 2- / La 2 o 3 -ZrO 2 @CNTS super acid.

Embodiment 2

[0029] 1. Take a certain amount of carbon nanotubes with an outer diameter of 5nm, and add a mass fraction of 30% HNO 3 solution and 30ml mass fraction of 15% H 2 o 2 The solution was heated to reflux at 110° C. for 3 hours, taken out, cooled to room temperature, washed by conventional methods, suction filtered, and dried to obtain surface-modified carbon nanotubes;

[0030] II. Dissolve zirconium nitrate, lanthanum nitrate and cetyltrimethylammonium bromide in 20ml of deionized water respectively, mix and stir for 0.5h, then add H2O with a concentration of 1.0mol / L 2 SO 4 Mix the solution with 2.0mol / L HCl, finally add 70mg of the surface-modified carbon nanotubes obtained by the above I, stir evenly at 35-40°C, heat at 110°C for 3-5h, cool to room temperature and pass After conventional methods of washing, suction filtration, drying, and roasting, SO with a high specific surface area is obtained. 4 2- / La 2 o 3 -ZrO 2 @CNTS super acid

Embodiment 3

[0032] Take by weighing 600g isopropanol and 282g oleic acid and add in the flat-bottomed flask, after stirring, add the SO prepared by 1.705g embodiment 1 4 2- / La 2 o 3 -ZrO 2 @CNTS super acid, stir, heat, control the temperature at 85°C, and react for 5 hours to get the final product with an acid value of 0.5mgKOH / g.

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Abstract

The invention discloses a method for catalytically synthesizing fatty acid isopropyl ester. In an esterification reaction, SO4<2-> / La2O3-ZrO2@CNTS super acid with high specific surface area is taken as an esterification catalyst, the method has the characteristics of low reaction temperature, high catalyst activity, no introduction of a new water entrainer, short reaction time, high esterificationrate and the like, and the acid value of the produced product is small.

Description

technical field [0001] The invention relates to the field of organic synthesis, in particular to a method for catalytically synthesizing isopropyl fatty acid esters. Background technique [0002] Fatty acid isopropyl ester, which has excellent anti-wear properties of synthetic esters, good low-temperature properties, high-temperature stability, and low volatility, so it can meet higher lubrication requirements; in addition, it has antistatic properties and makes hair combable Good, smooth, good for protecting damaged hair. Fatty acid isopropyl ester is used in cosmetics as an oily component of ointment, cream, and honey, which can make the dispersion effect of fillers and pigments better. It is an excellent oily solvent, especially suitable for application in the special oil industry. [0003] Fatty acid isopropyl ester has the characteristics of excellent lubricating performance, high viscosity index, high biodegradation rate and low toxicity. It is a kind of green lubrica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C67/08C07C69/587C07C69/22B01J27/053B01J35/10C10M173/00C10N40/22C10N30/06
CPCC10M173/00C07C67/08B01J27/053C10M2207/281C10N2030/64C10N2030/06C10N2040/22B01J35/617B01J35/615C07C69/587C07C69/22
Inventor 董秋月杨彩花
Owner 杭州更蓝生物科技有限公司
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