碱木质素过氧化氢预处理制备驱油剂的研究

doi:10.3969/j.issn.0253-2417.2014.01.010

Abstract

Abstract: The method for synthesis of surfactants for enhanced oil recovery, including pretreatment with H₂O₂, sulfonation, amination and alkylation, was studied with alkali lignin as feedstock. Firstly, the effects of pretreatment conditions on surface tension were investigated. The suitable pretreatment conditions were that mass ratio of H₂O₂ to alkali lignin was 1:10 at 70 ℃ for 30 min. Under the pretreatment conditions, the surface tension of 0.9 % surfactant solution could be reduced to 24 mN/m. The effects of surfactant and alkali concentration on oil-water interfacial tension of Gudao crude oil were also studied. The results showed that when both the surfactant concentration and NaOH concentration was 0.4 %, the oil-water interfacial tension was decreased to 0.07 mN/m. It was more stable than the control surfactants synthesized without H₂O₂ pretreatment. Finally, Fourier Transform Infrared (FT-IR) analysis indicated the structural characterization of lignin before and after modification.

Key words: alkali lignin, oxidation, surface tension, oil-water interfacial tension

CLC Number:

TQ35

SHEN Shi-cheng, ZHOU Yu-jie, MI Jie, ZHANG Jian-an, DAI Ling-mei, LIU De-hua, CHOO Y M, LOH S K. Preparation of Surfactants for Enhanced Oil Recovery from Alkali Lignin Pretreated with Hydrogen Peroxide[J]. Chemistry and Industry of Forest Products, 2014, 34(1): 57-61.

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Preparation of Surfactants for Enhanced Oil Recovery from Alkali Lignin Pretreated with Hydrogen Peroxide

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