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Gemini anionic surface active agent and preparation method thereof

A technology of surfactants and anions, applied in chemical instruments and methods, dissolution, chemical/physical processes, etc., to achieve high surface activity, easy access to raw materials, and mild reaction conditions

Inactive Publication Date: 2008-05-28
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, foreign countries have successively reported the application of gemini surfactants in tertiary oil recovery, while domestic research on this aspect is still in the research and test stage

Method used

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  • Gemini anionic surface active agent and preparation method thereof
  • Gemini anionic surface active agent and preparation method thereof
  • Gemini anionic surface active agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0036] Example 1: In a 100ml four-necked flask, add 30ml of dichloroethane, 2g (0.015mol) AlCl 3 , Stir and heat to 60°C until it dissolves completely. Add 3.4g (0.02mol) of diphenyl ether, dropwise add 24.92g (0.1mol) of dodecane bromide, control the temperature at 75°C, and react for 6h. After the reaction is completed, wash with an equal volume of deionized water, saturated sodium carbonate solution, and deionized water successively, separate, discard the water layer, dry the oil layer with anhydrous sodium sulfate, suction filter, and distill under reduced pressure until the bromoalkane is completely After distilling off, 8.11 g of the remaining dark yellow liquid was obtained, which was dialkyl diphenyl ether, and the yield was 80.14%. Move to a 100ml four-neck flask, add 20ml of dichloroethane, dropwise add 4.2g (0.036mol) chlorosulfonic acid in an ice bath, after the dropwise addition is complete, raise the temperature to 35°C, and react for 2h. Neutralize with 15% Na...

example 2

[0037] Example 2: Put 22g (0.1mol) of nonylphenol in a 250ml four-necked flask, add 2g of cetyltrimethylammonium bromide and 100ml of 15% sodium hydroxide solution, stir, and heat to 70°C, drop Add 7.15g (0.05mol) of dichlorodiethyl ether, continue to heat up to 90°C, react for 2 hours, and stop the reaction. After the system cools down, add 50 mL of ether to the system for extraction three times, wash the extract with 3% acetic acid solution, wash with water, dry over anhydrous magnesium sulfate, filter, and then spin dry the solvent with a rotary evaporator to obtain 18.65 g of diethyl ether. Nonylphenol diethyl ether. Place bis-nonylphenol diethyl ether in a three-necked flask equipped with a hydrogen chloride absorption device, add 50 mL of anhydrous dichloromethane, stir, dissolve 4.26 g (0.037 mol) of chlorosulfonic acid in 30 mL of anhydrous dichloromethane, and Drop into the reaction system under ice bath, continue to react at 35°C for 2h, stop the reaction, neutraliz...

example 3

[0038] Example 3: the gemini type sulfonate surfactant didodecyl diphenyl ether sodium disulfonate prepared by example 1 has been tested for surface activity and application performance, and the test results are as follows:

[0039] At 25°C, the minimum surface tension of the aqueous surfactant solution is 39.1mN m -1 , with a critical micelle concentration of 6.32×10 -5 mol / L, the foam height is 360mm, the stability is up to 2h, the calcium soap dispersibility is 10.5, and the decomposition temperature is greater than 400℃.

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Abstract

The invention relates to a gemini anion surfactant and a preparation method thereof. The surfactant has two synthesis routes: one is alkylated reaction which uses bromoalkane and diphenyl ether as raw materials to produce intermediate alkyl diphenyl ether under the catalysis of lewis acid AlCl3; the other is phase transfer catalytic reaction which uses alkylphenol and oxygen ether vinylicus as raw materials to produce alkylphenol oxygen ether vinylicus under the catalysis of the phase transfer catalyst of hexadecyl trimethyl ammonium bromide. Sulfonation and neutralization are conducted to the produced intermediate to acquire Gemini anion surfactant. With good surface activity, the surfactant has good synergistic effect with other surfactants, and can be widely applied in tertiary recovery.

Description

technical field [0001] The invention relates to a preparation in the field of fine chemicals, in particular to a gemini anion surfactant and a preparation method thereof. technical background [0002] Surfactant flooding has low investment and high income, so surfactant flooding is a potential tertiary oil recovery method. The surfactants for ASP flooding are mainly anionic sulfonate surfactants, which have strong surface activity and can reduce the oil-water interfacial tension to 10 -3 Below mN / m. The development of tertiary oil recovery technology has higher and higher requirements for surfactants, not only requiring it to have low oil-water interfacial tension and low adsorption value, but also requiring it to be compatible with reservoir fluids and chemical agents. Considering the impact of geological conditions for oil recovery, that is, the deeper the formation, the higher the salinity and the higher the temperature of the formation water, the higher the requirement...

Claims

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Application Information

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IPC IPC(8): B01F17/12C09K23/12
Inventor 郭丽梅熊开琴
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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