Efficiently-solubilizing anionic Gemini surfactant used for chlorinated hydrocarbon pollutants and synthesis method of efficiently-solubilizing anionic Gemini surfactant used for chlorinated hydrocarbon pollutants

A surfactant and anionic technology, which is applied in the field of anionic Gemini surfactants and their synthesis, can solve the problems of long time-consuming synthetic materials, no research on solubilization effect, and high sealing requirements, so as to facilitate migration , Mild conditions, wide application effect

Active Publication Date: 2020-01-17
JILIN UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, in the above-mentioned patents, the synthesis of materials takes a long time and chlorosulfonic acid is used as the sulfonating agent in the sulfonation step. Chlorosulfonic acid is a dangerous product that may explode when exposed to moisture, and the sealing performance is relatively high during the synthesis operation. and ther...

Method used

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  • Efficiently-solubilizing anionic Gemini surfactant used for chlorinated hydrocarbon pollutants and synthesis method of efficiently-solubilizing anionic Gemini surfactant used for chlorinated hydrocarbon pollutants
  • Efficiently-solubilizing anionic Gemini surfactant used for chlorinated hydrocarbon pollutants and synthesis method of efficiently-solubilizing anionic Gemini surfactant used for chlorinated hydrocarbon pollutants
  • Efficiently-solubilizing anionic Gemini surfactant used for chlorinated hydrocarbon pollutants and synthesis method of efficiently-solubilizing anionic Gemini surfactant used for chlorinated hydrocarbon pollutants

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Preparation of intermediate product ethylene glycol bismaleic acid monoester

[0033] Take 5.148g (0.0525mol) of maleic anhydride in a three-necked flask equipped with a condensation reflux device and melt the solid at 70°C. After the maleic anhydride is completely melted, add 1.46mL (0.02625mol) of ethylene glycol, 0.07g (1%wt) catalyst p-toluenesulfonic acid, 2ml solvent acetone, under magnetic stirring, heat preservation reaction for 1h, then connect the circulating water vacuum pump and depressurize the solvent acetone to obtain the monoesterification product intermediate A.

Embodiment 2

[0035] Preparation of ethylene glycol bismaleate n-decyl alcohol diester

[0036] Water separator is loaded on the reactor of embodiment 1, intermediate A remains in the reactor, add 8.75mL (0.4565mol) n-decyl alcohol successively, 0.08g (1%wt) catalyst p-toluenesulfonic acid, pass into nitrogen simultaneously Vacuumize to make the reading of the vacuum pump reach 0.05Mpa, raise the reaction temperature to 120°C, and keep warm for 3 hours under magnetic stirring to obtain the intermediate B of the diesterification product.

Embodiment 3

[0038] Preparation of ethylene glycol bismaleate n-decyl diester sulfonate

[0039]Take off the water separator and the vacuum device on the device of Example 2, add 10mL deionized water to the three-necked flask equipped with intermediate product B under normal temperature magnetic stirring, and use a wide range of pH test papers during the dripping of 60g / L sodium hydroxide solution Measure the pH value of the mixture, stop until the mixture reaches neutrality, add 5.2g (0.05mol) sodium bisulfite, raise the reaction temperature to 110°C, keep it under magnetic stirring for 8 hours to obtain the sulfonated product, and transfer the product to a beaker Dry at 105°C to obtain white solid GS-10.

[0040] The prepared anionic Gemini surfactant for efficient solubilization of chlorinated hydrocarbon pollutants has the following structural formula:

[0041]

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Abstract

The invention relates to an efficiently-solubilizing anionic Gemini surfactant used for chlorinated hydrocarbon pollutants and a synthesis method of the efficiently-solubilizing anionic Gemini surfactant used for the chlorinated hydrocarbon pollutants. After being dissolved in water, the synthesized ethylene glycol di-maleic acid 1-decanol diester sulfonate Gemini surfactant (GS-10) forms electronegative micelle under a condition of a concentration higher than a critical micelle concentration, and hydrophobic chlorinated hydrocarbons, such as TCE and PCE, enter the micelle to increase the apparent solubility of the pollutants in the water. The efficiently-solubilizing anionic Gemini surfactant used for the chlorinated hydrocarbon pollutants can be preferably used for an underground water surfactant in-situ flushing technology to remove residual chlorinated hydrocarbon pollutants in aquifers, and has wide application.

Description

technical field [0001] The invention belongs to the technical field of surfactants, in particular to an in-situ surfactant, in particular to an anionic Gemini surfactant with high solubilizing ability for chlorinated hydrocarbon pollutants and a synthesis method thereof. The prepared surface The aqueous solution formed after the active agent is dissolved in water can effectively improve the solubility of hydrophobic chlorinated hydrocarbon pollutants in water. Background technique [0002] Groundwater is the main source of drinking water in my country. With the development of industry and agriculture, the problem of organic pollution of groundwater is becoming more and more serious. Chlorinated hydrocarbons are widely used as degreasing agents, cleaning agents, and intermediates in industrial synthesis, so the detection rate of chlorinated hydrocarbon pollutants in groundwater surveys around the world is extremely high. Most chlorinated hydrocarbons, such as trichlorethylen...

Claims

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Application Information

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IPC IPC(8): C07C309/17C07C303/32C07C67/08C07C69/60B01F17/10C09K23/10
CPCC07C309/17C07C303/32C07C67/08C09K23/00C07C69/60
Inventor 董军梁雪杨朝格徐非凡蔡培垚莫言阳姜迪瀚
Owner JILIN UNIV
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