Ester glycosyl phase selective oleophylic gelator as well as preparation method and application thereof in oil gelatinization

A selective, oil-gel technology, applied in separation methods, carboxylic acid halide preparation, grease/oily substance/suspton removal devices, etc., can solve problems such as high cost, cumbersome preparation process, and slow gelation rate. Achieve high-efficiency gelling ability, overcome the cumbersome preparation process, and achieve the effect of high-efficiency oil-water separation ability

Inactive Publication Date: 2015-07-29
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantages of the current phase-selective gelling factor, such as cumbersome preparation process, high ...

Method used

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  • Ester glycosyl phase selective oleophylic gelator as well as preparation method and application thereof in oil gelatinization
  • Ester glycosyl phase selective oleophylic gelator as well as preparation method and application thereof in oil gelatinization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Weigh 2.00 g of mannitol into a four-neck flask, add 20 ml of dichloromethane as a solvent, and stir at high speed for 1 hour to fully disperse it.

[0025] (2) Put the four-neck flask in an ice bath, add 0.40 g of acid-binding agent triethylamine and dropwise add 6.65 g of stearyl chloride while keeping stirring. After the stearyl chloride was added dropwise, the reaction was continued for 0.5 hours in an ice bath. Then start to raise the temperature in stages: after raising the temperature to 60°C, keep the temperature for 1 hour, continue to raise the temperature to 75°C, keep the temperature for 3.5 hours, continue to raise the temperature to 95°C, keep the temperature for 3 hours, and then stop the reaction.

[0026] (3) The product obtained in step (2) was evaporated to remove the solvent with a rotary evaporator under reduced pressure, and then 30ml of hot distilled water and 45ml of ethyl acetate were added to wash, left to stand, layered, and separated to o...

Embodiment 2

[0029] (1) Weigh 2.00 g of mannitol into a four-neck flask, add 20 ml of solvent toluene, and stir at high speed for more than 1 hour to fully disperse it.

[0030](2) Put the four-neck flask in an ice bath, add 0.40 g of acid-binding agent triethylamine and dropwise add 6.65 g of stearyl chloride while keeping stirring. After the stearyl chloride was added dropwise, the reaction was continued for 1 hour in an ice bath. Then start to raise the temperature in stages: after raising the temperature to 60°C, keep the temperature for 1 hour, continue to raise the temperature to 75°C, keep the temperature for 4 hours, continue to raise the temperature to 95°C, keep the temperature for 3.5 hours, and then stop the reaction.

[0031] (3) The product obtained in step (4) was evaporated to remove the solvent with a rotary evaporator under reduced pressure, then added 30ml of hot distilled water and 45ml of ethyl acetate to wash, left to stand, layered, and separated to obtain an ethyl a...

Embodiment 3

[0034] (1) Weigh 2.00 g of mannitol into a four-neck flask, add 20 ml of solvent N,N-dimethylformamide, and stir at high speed for more than 1 hour to fully dissolve it.

[0035] (2) Put the four-neck flask in an ice bath, add 0.40 g of acid-binding agent triethylamine and dropwise add 6.65 g of stearyl chloride while keeping stirring. After the stearyl chloride was added dropwise, the reaction was continued for 0.5 hours in an ice bath. Then start to raise the temperature in stages: after raising the temperature to 60°C, keep the temperature for 1 hour, continue to raise the temperature to 75°C, keep the temperature for 4 hours, continue to raise the temperature to 95°C, keep the temperature for 3.5 hours, and then stop the reaction.

[0036] (3) The product obtained in step (2) was evaporated to remove the solvent with a rotary evaporator under reduced pressure, and then 30ml of hot distilled water and 45ml of ethyl acetate were added to wash, left to stand, layered, and sep...

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Abstract

The invention discloses an ester glycosyl phase selective oleophylic gelator as well as a preparation method and application thereof in oil gelatinization. Mannitol and medium/long alkyl chain acyl chlorides are taken as raw materials, and the selective oleophylic gelator is prepared through O-esterification reaction. Due to the/long alkyl chain, the ester glycosyl phase selective oleophylic gelator disclosed by the invention can selectively enter an oil phase in an oil-water mixture, self-assembling can be achieved in the oil phase through the weak interaction of intermolecular hydrogen bonds, a physically crosslinked supramolecular structure can be formed, furthermore the oil phase is immobilized through interfacial tension and capillary action, then the oil phase has no mobility, and the effect of gelatinization can be achieved. The problems that a conventional similar gelator is complex in preparation process, high in catalyst cost, and low in gelatinization efficiency are solved, and the ester glycosyl phase selective oleophylic gelator has a relatively good application prospect in the fields of offshore overflow oil recycling and rapid industrial oil-containing wastewater separation.

Description

technical field [0001] The invention relates to functional macromolecules and self-assembled supramolecular materials, in particular to an ester sugar-based phase-selective lipophilic gelling factor, its preparation method and its application in oil gelation. Background technique [0002] With the acceleration of industrialization, water pollution poses an increasingly serious threat to human survival. Among water pollution, oil pollution is the most prominent. How to eliminate oil pollution efficiently and at low cost has become a serious issue for scientists. The major pollution events caused by the oil spill in the Gulf of Mexico and oil storage tanks in Dalian oil terminal have shocked the world. It can be seen that it is of great significance to dispose of leaked oil with high efficiency and low cost, and to reduce or even eliminate water pollution. [0003] At present, people mostly use dispersants to emulsify oil layers to dilute and desalinate pollution; adsorbents...

Claims

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Application Information

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IPC IPC(8): C07C67/14C07C69/33C02F1/40C09K3/32
CPCC07C67/14C02F1/40C07C69/33C09K3/32
Inventor 侯信杜洋陈杰
Owner TIANJIN UNIV
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