Method for catalytic synthesis of epoxidized soybean oil under carboxylic acid-free condition

A technology of epoxidized soybean oil and soybean oil, which is applied in chemical instruments and methods, catalytic reactions, physical/chemical process catalysts, etc., can solve the problems of low catalytic reaction efficiency and difficulty in obtaining high-quality epoxidized soybean oil, and achieve excellent Catalytic performance, high epoxy value, clean synthesis effect

Inactive Publication Date: 2017-06-13
SHAOYANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The key technology to realize the clean synthesis of epoxidized soybean oil under the condition of no carboxylic acid lies in the development of high-efficiency catalysts. The existing technical solutions mainly use a single type of quaternary ammonium cation-doped phosphotungstic heteropolyacid as a catalyst, and it is difficult to obtain an epoxy value exceeding 6.5%. high-quality epoxidized soybean oil, and the catalytic reaction efficiency is low

Method used

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  • Method for catalytic synthesis of epoxidized soybean oil under carboxylic acid-free condition
  • Method for catalytic synthesis of epoxidized soybean oil under carboxylic acid-free condition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Catalyst preparation: Weigh 1.6 mmol of cetyltrimethylammonium chloride, 0.7 mmol of copper nitrate and 1 mmol of phosphotungstic acid and dissolve them in 20 ml of deionized water; , first slowly add the cetyltrimethylammonium chloride solution to the phosphotungstic acid solution, and then continue to slowly add the copper nitrate solution to gradually form a white precipitate; after the addition, continue to stir for 0.5 h, and then statically Place and age for 1 h. After the white precipitate is separated by filtration and dried, the molecular formula can be obtained as [(C 16 h 33 )N(CH 3 ) 3 ] 1.6 Cu 0.7 PW 12 o 40 Composite doped phosphotungstate.

Embodiment 2

[0019] The preparation of catalyst: preparation process is the same as embodiment 1, only changes the add-on of cetyltrimethylammonium chloride into 1mmol, and the add-on of copper nitrate is changed into 1 mmol, molecular formula can be obtained as [(C 16 h 33 )N(CH 3 ) 3 ] CuPW 12 o 40 Composite doped phosphotungstate.

Embodiment 3

[0021] Preparation of catalyst: the preparation process is the same as in Example 1, only cetyltrimethylammonium chloride is changed to 2 mmol, and the addition of copper nitrate is changed to 0.5 mmol, and the molecular formula can be obtained as [(C 16 h 33 )N(CH 3 ) 3 ] 2 Cu 0.5 PW 12 o 40 Composite doped phosphotungstate.

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Abstract

The invention relates to a method for catalytic synthesis of epoxidized soybean oil under the carboxylic acid-free condition. By using composite doped phosphotungstate as a catalyst and using hydrogen peroxide as an oxidizing agent and under the carboxylic acid-free condition, soybean oil is epoxidized to prepare the epoxidized soybean oil. The structural formula of the composite doped phosphotungstate is as shown in the specification, wherein R= -C16H33 or -C18H37 and x=1-2. The invention has the following advantages: the composite doped phosphotungstate has excellent catalytic performance on the epoxidation reaction of soybean oil; as the epoxidation reaction is carried out under the carboxylic acid-free condition, the reaction process is clean and efficient and epoxy value of the product is high.

Description

technical field [0001] The invention relates to a method for synthesizing epoxidized soybean oil, in particular to a method for catalytically synthesizing epoxidized soybean oil under the condition of no carboxylic acid. Background technique [0002] Epoxidized soybean oil is a non-toxic and environment-friendly plastic additive, which has excellent plasticizing and thermal stabilizing effects, and is widely used in the fields of plastics, coatings and rubber. Epoxidized soybean oil has the characteristics of non-toxicity, good compatibility, biodegradability and low mobility, and can be used in fields with high safety requirements such as medical treatment, food packaging, daily necessities and children's toys. [0003] At present, the industrial method for preparing epoxidized soybean oil is mainly carboxylic acid catalyzed epoxidation. The method uses hydrogen peroxide as an oxygen source, formic acid or acetic acid as an active oxygen carrier, sulfuric acid or solid aci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D301/12C07D303/42B01J31/34B01J31/18
CPCB01J27/188B01J31/0239B01J31/34B01J2231/72C07D301/12C07D303/42
Inventor 周喜张超
Owner SHAOYANG UNIV
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