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Synthesizing process of fatty methyl ester

A technique for the synthesis of fatty acid methyl esters, which is applied in the field of synthesis of fatty acid methyl esters, can solve the problems of long time, complicated methods, and high costs, and achieve the effects of simple equipment, simple process, and mild reaction conditions

Inactive Publication Date: 2007-07-18
王伟松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing fatty acid methyl esterification is mostly carried out in tower reactors and tank reactors. In order to avoid interference during fatty acid methyl esterification, it is often necessary to extract lipids from samples with organic solvents. Derivatization of lipids to produce fatty acid methyl esters, which is complex, time-consuming and expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Add 400 parts of lauric acid and 384 parts of methanol to the reaction kettle by weight, add 3.1 parts of sodium methylate under stirring, gradually heat up, and reflux reaction for 12 hours under the reaction conditions of a temperature of 90 ° C, then transfer to the distillation kettle, under nitrogen flow, Under the condition of 90°C, carry out distillation reaction for 1 hour to remove methanol, then cool to 50°C, neutralize a small amount of lauric acid with lye, and the product content is ≥99.5%.

[0013] Its reflux reaction equation is in the above-mentioned embodiment:

[0014] CH 3 OH+CH 3 (CH 2 ) 10 COOH→CH 3 OOC (CH 2 ) 10 CH 3 +H 2 o

Embodiment 2

[0016] Add 400 parts of oleic acid and 278 parts of methanol by weight into the reaction kettle, add 2.7 parts of sodium methylate under stirring, gradually raise the temperature, reflux reaction for 12 hours under the reaction conditions of a temperature of 90°C, and then transfer to the distillation kettle, under nitrogen flow, Distill for 1 hour at 90°C to remove methanol, then cool to 50°C, neutralize a small amount of oleic acid with lye, and the product content is ≥99.5%

[0017] Its reflux reaction equation is in the above-mentioned embodiment:

[0018] CH 3 OH+4CH 3 (CH 2 ) 7 CH=CH(CH 2 ) 7 COOH—→

[0019] CH 3 OOC (CH 2 ) 7 CH=CH(CH 2 ) 7 CH 3 +H 2 o

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PUM

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Abstract

This invention relates to a synthetic method of fatty acid methyl ester, belongs to organic chemistry esters compounds synthesis technical fields. It takes fatty acids and methanol as raw materials. Their characteristics lies in the role of a catalyst under refluxed reaction to obtained fatty acid methyl ester, and then distilling out excess methanol; fatty acid is Lauric acid or oleic acid; catalytic agent is one of the p-toluenesulfonic acid, sodium methylatesodium methoxide, sodium hydroxide, etc, and the amount of it account for 0.2 to 1.0 percentage of total weight of fatty acid and methanol; molar ratio of fatty acids and methanol is 1:5.0 to 10.0.

Description

technical field [0001] The invention relates to a synthesis method of fatty acid methyl ester, which belongs to the technical field of synthesis of ester compounds in organic chemistry. Background technique [0002] Fatty acid methyl esters are raw materials for the production of various surfactants such as alkyl alcohol amides, methyl sulfonates, polyol ester nonionic surfactants, and high-grade soaps. Higher fatty acid methyl esters can be directly used as high-grade lubricating oil additives, additives for cutting oils, coolants, rolling oils and drilling oils in machining. Additives used in rubber processing and directly used as diesel fuel or diesel additives can improve oil products without affecting efficiency and provide substitutes for petroleum products. In view of this, the demand for this product is increasing all over the world. Existing fatty acid methyl esterification is mostly carried out in tower reactors and tank reactors. In order to avoid interference d...

Claims

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Application Information

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IPC IPC(8): C07C67/08C07C69/52
Inventor 王伟松王新荣孟照平刘志湘
Owner 王伟松
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