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Method for catalytic synthesis of lauryl oleate by using twin-ion liquid microemulsion and application thereof

A technology of ionic liquid and microemulsion, which is applied in chemical instruments and methods, preparation of organic compounds, preparation of carboxylate, etc., can solve problems such as unfavorable industrial production, achieve low equipment corrosion, low overall cost, and good industrial application prospects Effect

Inactive Publication Date: 2014-08-27
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also relevant reports on the research of microemulsion as a reaction medium to catalyze the esterification reaction, but the microemulsion in the research is an aqueous microemulsion, and this aqueous microemulsion catalyzed esterification reaction requires a long time (more than 24h) low temperature (30 ~ 60 ℃ ) (K Manabe, X M Sun, Kobayashi.J.Am Chem.Soc, 2002, 124:11971-11978.), which is not conducive to industrial production

Method used

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  • Method for catalytic synthesis of lauryl oleate by using twin-ion liquid microemulsion and application thereof
  • Method for catalytic synthesis of lauryl oleate by using twin-ion liquid microemulsion and application thereof

Examples

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Effect test

Embodiment 1

[0036] Diionic liquid microemulsion components and their dosage: hydrophilic ionic liquid [Bmim] BF 4 (purchased from Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences) 1 part by weight, 24 parts by weight of cyclohexane, 60 parts by weight of conventional surfactant TX-100 (purchased from Guangzhou Jingke Chemical Glass Instrument Co., Ltd.), ionic liquid catalytic type Surfactant 1-hexyl-3-methylimidazolium hydrogen sulfate (purchased from Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences) 15 parts by weight.

[0037] At 25°C, mix the surfactant TX-100 with the catalytic surfactant ionic liquid 1-hexyl-3-methylimidazolium bisulfate evenly, stir at a stirring speed of 300 rpm for 10 minutes, and obtain a clear and transparent mixture. Cyclohexane was then added to mix evenly with it, the stirring speed was 300 rpm, and the mixture was stirred for 10 minutes to obtain a clear and transparent mixture. Under the stirring condition of 300 r / min...

Embodiment 2

[0041] Diionic liquid microemulsion components and their dosage: hydrophilic ionic liquid [Emim] BF 4 (purchased from Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences) 2 parts by weight, 32 parts by weight of toluene, 55 parts by weight of conventional surfactant TX-45 (purchased from Beijing Huanyu Kechuang Biotechnology Development Co., Ltd.), ionic liquid catalytic type Surfactant 1-hexyl-3-methylimidazolium hydrogen sulfate (purchased from Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences) 11 parts by weight.

[0042] At 20°C, mix the surfactant TX-45 and the catalytic surfactant ionic liquid 1-hexyl-3-methylimidazolium bisulfate evenly, stir at 700 rpm for 5 minutes, and obtain a clear and transparent mixture. Then add toluene and mix evenly with it, stirring at a stirring speed of 700 rpm for 5 minutes to obtain a clear and transparent mixture. Under the condition of stirring at 700 rpm, the hydrophilic polar phase ionic liquid [Emim]...

Embodiment 3

[0046] Dual ionic liquid microemulsion components and consumption thereof: hydrophilic ionic liquid [Bmim] Br (purchased from Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences) 4 parts by weight, 36 parts by weight of n-hexane, conventional surfactant TX-100 ( Purchased from Guangzhou Jingke Huabo Instrument Co., Ltd.) 50 parts by weight, ionic liquid catalytic surfactant 1-hexyl-3-methylimidazolium bisulfate (purchased from Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences) 5 parts by weight, 1 - 5 parts by weight of octyl-3-methylimidazolium hydrogen sulfate (purchased from Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences).

[0047] Mix the surfactant TX-100 with the catalytic surfactant ionic liquid 1-hexyl-3-methylimidazolium bisulfate and 1-octyl-3-methylimidazolium hydrogensulfate evenly at 30°C, Stirring at a stirring speed of 1200 rpm for 5 minutes to obtain a clear and transparent mixture, then adding n-hexane and mi...

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Abstract

The invention belongs to the technical field of preparation of lauryl oleate, and discloses a method for catalytic synthesis of lauryl oleate by using a twin-ion liquid microemulsion and an application thereof. The method comprises the following steps: (1) adding a non-polar solvent to a surfactant, dropwise adding imidazolium ionic liquids after mixing, and evenly mixing, so as to obtain the twin-ion liquid microemulsion; and (2) adding an oleic acid and laurinol to the twin-ion liquid microemulsion, carrying out heating reaction, and purifying to obtain lauryl oleate. According to the method, the twin-ion liquid microemulsion with good high-temperature stability is utilized as a reaction medium, the contact area of a catalyst and an oligomer is increased, the generated water is solubilized into a core of the ionic liquid microemulsion, the reaction rate is quickened, the used catalyst is high in activity, small in corrosion on equipment, and low in demands on equipment, the problems of high catalyst cost, serious equipment corrosion, low reaction rate, poor product quality, rigorous reaction condition and the like in the prior art are solved, and the method can be popularized and applied to catalytic esterification reaction.

Description

technical field [0001] The invention belongs to the technical field of lauryl oleate preparation, and in particular relates to a method for catalytically synthesizing lauryl oleate by a dual ionic liquid microemulsion and an application thereof. Background technique [0002] Lauryl oleate is a yellow oily liquid. It is a lubricant and softener with excellent performance. It is widely used in lubricating oil, chemical fiber oil, textile oil and other fields. [0003] Lauryl oleate contains unsaturated bonds and long fatty groups, and there are many side reactions, low reactivity, low reaction selectivity, deep color of the product, and subsequent separation Difficulties and other problems; although super solid acid can overcome some of the shortcomings of liquid acid, there are still technical problems such as easy deactivation and short service life. [0004] Ionic liquid is a new medium and material with excellent physical and chemical properties, and has a wide range of a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C67/08C07C69/58
CPCC07C67/08C07C69/58
Inventor 严宗诚江冬瑜陈砺
Owner SOUTH CHINA UNIV OF TECH
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