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Unsaturated vegetable oil alkylates based on UV photocatalytic reaction and preparation method thereof

A technology for photocatalytic reaction and vegetable oil alkane, which is applied in the field of unsaturated vegetable oil alkylate and its preparation, and achieves the effects of mild reaction conditions and short reaction time.

Active Publication Date: 2016-11-23
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above two inventions have modified vegetable oils and endowed them with new properties, they all require high energy and high heat, and only use traditional methods to modify them, and do not involve the use of UV light as an energy source for unsaturated vegetable oils. Alkylation modification to improve the development and application of natural oils, and the application of UV photocatalysis in the field of organic synthesis to open up new organic synthesis methodology

Method used

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  • Unsaturated vegetable oil alkylates based on UV photocatalytic reaction and preparation method thereof
  • Unsaturated vegetable oil alkylates based on UV photocatalytic reaction and preparation method thereof
  • Unsaturated vegetable oil alkylates based on UV photocatalytic reaction and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Example 1: Methyl oleate alkylate

[0056] (1) Synthesis and separation and purification of methyl trophic acid: add 43.6 g tung oil (0.05 mol, tung oil is calculated as acid glycerol (872)) in a 250 mL three-necked flask, install a condensing reflux device, and heat the constant temperature water bath to 70 After ℃, add the prepared NaOH / methanol solution (0.436g / 9.6g), wherein methanol: tung oil=6:1 (mol / mol), methyl alcohol 0.3mol (9.6g); NaOH is 1% (0.436g) of tung oil quality g); turn on the magnetic stirring, and stop the reaction after reacting for about 1 hour; add an appropriate amount of phosphoric acid to neutralize, transfer the reaction solution to a separatory funnel while it is still hot, and separate the glycerin layer (lower layer); Wash 3 to 4 times, remove the water phase in the lower layer, distill off methanol and most of the water under reduced pressure, and dry with anhydrous sodium sulfate; the tung oil methyl esterification product is obtained. ...

Embodiment 2

[0067] Example 2: Methyl linolenate alkylate

[0068] (1) Synthesis and separation and purification of methyl linolenate: Add 43.6g linseed oil (0.05mol, linseed oil is calculated as linolenic acid glyceride (872)) in a 250mL three-necked flask, install a condensing reflux device, and heat the constant temperature water bath to After 60°C, add the prepared KOH / methanol solution, wherein methanol: tung oil = 5:1 (mol / mol), methanol 0.25mol; KOH is 2% of the mass of linseed oil; turn on the magnetic stirring, and stop after about 80 minutes of reaction Reaction; add an appropriate amount of phosphoric acid for neutralization, transfer the reaction solution to a separatory funnel while it is hot, let it stand, and separate the glycerin layer (lower layer); wash the upper layer of liquid with hot distilled water for 3 to 4 times, remove the lower layer of water phase, and remove Pressure distillation to remove methanol and most of the water, etc., and dry with anhydrous calcium ch...

Embodiment 3

[0072] Example 3: Methyl Linoleate Alkylate:

[0073] (1) Synthesis and separation and purification of methyl linoleate: add 43.9g soybean oil (0.05mol, soybean oil is calculated as glyceryl linoleate 878) into a 250mL three-necked flask, install a condensing reflux device, and heat in a constant temperature water bath After reaching 80°C, add the prepared KOH / methanol solution, wherein methanol: tung oil = 8:1 (mol / mol), methanol 0.4mol; KOH is 2% of the soybean oil quality; turn on magnetic stirring, and after about 50 minutes of reaction, Stop the reaction; add an appropriate amount of phosphoric acid for neutralization, transfer the reaction solution to a separatory funnel while it is hot, let it stand, and separate the glycerin layer (lower layer); wash the upper layer of liquid with hot distilled water for 3 to 4 times, remove the lower layer of water phase, Distill under reduced pressure to remove methanol and most of the water, etc., and dry with anhydrous sodium sulfa...

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Abstract

The invention belongs to the technical field of UV photocatalytic chemistry and discloses unsaturated vegetable oil alkylates based on UV photocatalytic reaction and a preparation method thereof. The alkylates have one of structures shown in following formulas (1) and (2), wherein R1 is C-C4 linear or branched alkane groups, R2 is at least one of -H, -Cl, -CH3, -OH, -OCH3, -C(CH3)3 and the like, n is equal 0 or 1, m is greater than 1, with 6<l+m+s+t<16, and R3 is at least one of -OH, -CH3, -COOH and the like, with a=1 or 2, 0<b<6, c=0 or 1 and d=0 or 1. Analogs with urushiol structure are synthesized by using UV photo-initiated vegetable oil acylation, reaction conditions are mild, reaction time is short, and various vegetable oil acrylates can be acquired without the conditions such as high temperature and high pressure.

Description

technical field [0001] The invention belongs to the technical field of UV photocatalytic chemistry, in particular to an unsaturated vegetable oil alkylate based on UV photocatalytic reaction and its preparation method and application. Background technique [0002] In today's world, resource depletion and environmental problems have become two major challenges facing mankind. Oil prices remain high, energy and power supplies are tightening, and fossil energy and nuclear energy reserves are limited and will cause serious consequences to the environment. Therefore, various countries Governments and scientists have paid great attention to the development and utilization of biological resources that are rich in resources, highly renewable, and conducive to improving the environment and sustainable development. With the rapid development of my country's economy, energy consumption is increasing day by day, and showing an upward trend. According to statistics, my country's basic en...

Claims

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Application Information

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IPC IPC(8): C07C67/343C07C69/732C07C37/16C07C39/21C09D4/00C09D11/101C09J4/00
CPCC07C37/16C07C67/03C07C67/343C09D4/00C09D11/101C09J4/00C07C69/732C07C69/587C07C39/21
Inventor 杨卓鸿周闯袁腾张淑婷周健
Owner SOUTH CHINA AGRI UNIV
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