Small molecule gelling factor, gel material, preparation method and application

A small-molecule gel and gel material technology, applied in the field of gel materials, can solve the problems of complex preparation methods, high cost, and long gelation time of small-molecule gel factors, and achieve good recycling and low preparation costs , the effect of simple preparation method

Active Publication Date: 2020-10-16
HEBEI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a small molecule gelling factor, a gel material and its preparation method and application, aiming to solve the complicated preparation method of the existing small molecule gelling factor, high cost, long gelation time and gelation problem. Problems that need to use auxiliary solvents or other means during the coagulation process

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  • Small molecule gelling factor, gel material, preparation method and application
  • Small molecule gelling factor, gel material, preparation method and application
  • Small molecule gelling factor, gel material, preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0045] A preparation method of small molecule gelling factor:

[0046] In this embodiment, the following reaction is used to prepare the multifunctional small molecule gelling factor shown in formula I, wherein R is C 11 straight-chain alkyl of:

[0047]

[0048] The specific preparation process is:

[0049] 1) 2-acetoxyphenylpropionic acid shown in the synthetic formula II

[0050] Under nitrogen protection, dissolve 8.3 g of L-phenyllactic acid in 14 ml of dry pyridine, stir in an ice bath for 10 minutes, add 14.5 ml of acetic anhydride dropwise to the above solution, and react at room temperature for 6 hours (monitored by thin-layer chromatography until the reaction is complete) ), add 40ml of dichloromethane to dilute the above reaction solution, wash with 40ml of 1mol / L hydrochloric acid solution, separate the organic phase and dry with anhydrous sodium sulfate, and spin off the organic solvent under reduced pressure to obtain 9.4g of colorless oil, with a yield of abo...

Embodiment 2

[0061] In this embodiment, the following reaction is used to prepare the multifunctional small molecule gelling factor shown in formula I, wherein R is C 5 straight-chain alkyl of:

[0062]

[0063] The specific preparation process is:

[0064] 1) Synthesis of 2-acetoxyphenylpropionic acid shown in formula II: the same as in Example 1, and will not be repeated here.

[0065] 2) the hydrazide shown in the synthetic formula III

[0066] Under the protection of nitrogen, add 3.7g of methyl hexanoate into a reaction flask containing 45ml of ethanol, add 5.6ml of hydrazine hydrate under stirring at room temperature, raise the temperature to 80°C, and react for 5 hours. After the reaction, cool to room temperature and stir overnight, and filter with suction 3.3 g of white solid was obtained, the yield was about 90%.

[0067] 3) Synthesizing the small molecule gelling factor shown in formula I

[0068] Under nitrogen protection, dissolve 1.04 g of 2-acetoxyphenylpropionic acid...

Embodiment 3

[0070] In this embodiment, the following reaction is used to prepare the multifunctional small molecule gelling factor shown in formula I, wherein R is C 15 straight-chain alkyl of:

[0071]

[0072] The specific preparation process is:

[0073] 1) Synthesis of 2-acetoxyphenylpropionic acid shown in formula II: the same as in Example 1, and will not be repeated here.

[0074] 2) the hydrazide shown in the synthetic formula III

[0075] Under the protection of nitrogen, add 7.6g of methyl palmitate into a reaction flask containing 80ml of ethanol, add 5.6ml of hydrazine hydrate under stirring at room temperature, raise the temperature to 80°C, and react for 8 hours. After the reaction, cool to room temperature and stir overnight, and filter with suction 6.1 g of white solid was obtained, about 81% yield.

[0076] 3) Synthesizing the small molecule gelling factor shown in formula I

[0077] Under nitrogen protection, dissolve 1.04 g of 2-acetoxyphenylpropionic acid repres...

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Abstract

The invention provides a micromolecular gelator, a gel material, a preparation method and an application. The gelator is prepared by taking cheap and easily available phenyllactic acid as a raw material and introducing a hydrazide group and a hydrophobic alkyl chain through a simple and mature chemical reaction. The gelator can effectively gelate various organic solvents; the gel material formed by the gelator and methyl benzoate can quickly and efficiently remove phenol from sewage; the gelator can selectively gelate petroleum products such as gasoline, diesel oil, kerosene and lubricating oil, and crude oil in an oil-water mixture without the help of an additive; oil and water separation is achieved by simple operation; the gelator can be used for leakage management of the crude oil andthe petroleum products and is multifunctional; and in addition, the gelator has good recyclability and very good application prospects in the fields of phenol removal from the sewage, marine oil spilltreatment and the like.

Description

technical field [0001] The invention relates to the technical field of gel materials, in particular to a small molecule gel factor, gel material, preparation method and application. Background technique [0002] The discharge and leakage of organic pollutants such as dyes, pesticides, phenols and petroleum products seriously threaten the aquatic ecosystem and human health, and cause serious economic losses to society. At present, the treatment methods for organic pollutants mainly include physical adsorption, chemical precipitation and biodegradation, etc., but due to the influence of many factors and defects, the above treatment methods do not perform well in the actual application process. Therefore, the development of new materials and treatment methods has become one of the core contents of organic pollutant treatment. [0003] It has been found that some small molecular organic compounds can gel most organic solvents at very low concentrations, making the whole system ...

Claims

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Application Information

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IPC IPC(8): C07C241/04C07C243/32B01J20/22B01J20/28C02F1/28C02F101/32C02F101/34
CPCB01J20/22B01J20/28047C02F1/285C02F2101/32C02F2101/345C07C241/04C07C243/32
Inventor 于海涛孙贺略魏昊琦揣晶
Owner HEBEI NORMAL UNIV
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