SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2014, Vol. 22 ›› Issue (6): 699-705.DOI: 10.1016/S1004-9541(14)60095-1

• 催化、动力学与反应工程 • 上一篇    下一篇

Phase Behavior of Sodium Dodecyl Sulfate-n-Butanol-Kerosene-Water Microemulsion System

刘会娥, 张孝坤, 丁传芹, 陈爽, 齐选良   

  1. State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266555, China
  • 收稿日期:2013-01-13 修回日期:2013-06-08 出版日期:2014-06-28 发布日期:2014-06-06
  • 通讯作者: LIU Huie
  • 基金资助:

    Supported by the National Natural Science Foundation of China (21106187), Promotive Research Funds for Excellent Young and Middle-aged Scientists of Shandong Province (BS2011NJ021), the Fundamental Research Funds for the Central Universities (11CX05016A), and the Graduate Innovation Project of CUP 2012 (CX-1214)

Phase Behavior of Sodium Dodecyl Sulfate-n-Butanol-Kerosene-Water Microemulsion System

LIU Huie, ZHANG Xiaokun, DING Chuanqin, CHEN Shuang, QI Xuanliang   

  1. State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266555, China
  • Received:2013-01-13 Revised:2013-06-08 Online:2014-06-28 Published:2014-06-06
  • Supported by:

    Supported by the National Natural Science Foundation of China (21106187), Promotive Research Funds for Excellent Young and Middle-aged Scientists of Shandong Province (BS2011NJ021), the Fundamental Research Funds for the Central Universities (11CX05016A), and the Graduate Innovation Project of CUP 2012 (CX-1214)

摘要: Experiments were carried out to investigate the influences of cation from electrolytes and acidity/alkalinity on the phase behavior of sodium dodecyl sulfate-n-butanol-organics-water (with electrolytes) microemulsion system. The organics used is commercial kerosene. The volume ratio of water to organics is 1:1. The results show that the type and valence of electrolyte cations are important factors influencing the microemulsion behavior. Bivalent Ca2+ is more effective than monovalent K+ and Na+ for the formation of Winsor type III and II microemulsion. For electrolytes with the same monovalent cation Na+, #em/em#.e. NaCl and Na2CO3, anions in the electrolyte have some effect. Bivalent anion leads to a lower activity of cation Na+ than monovalent anion Cl-. NaOH (or KOH) behaves similar with NaCl (or KCl). When HCl is used as electrolyte, its acidity plays an important role. Phase inversion of microemulsion from type III (or II) to type I is observed through precipitation of Ca2+ using Na2CO3, neutralization of HCl by NaOH, and addition of water to the system, which releases the oil from the microemulsion.

关键词: microemulsion, sodium dodecyl sulfate, kerosene, phase inversion

Abstract: Experiments were carried out to investigate the influences of cation from electrolytes and acidity/alkalinity on the phase behavior of sodium dodecyl sulfate-n-butanol-organics-water (with electrolytes) microemulsion system. The organics used is commercial kerosene. The volume ratio of water to organics is 1:1. The results show that the type and valence of electrolyte cations are important factors influencing the microemulsion behavior. Bivalent Ca2+ is more effective than monovalent K+ and Na+ for the formation of Winsor type III and II microemulsion. For electrolytes with the same monovalent cation Na+, #em/em#.e. NaCl and Na2CO3, anions in the electrolyte have some effect. Bivalent anion leads to a lower activity of cation Na+ than monovalent anion Cl-. NaOH (or KOH) behaves similar with NaCl (or KCl). When HCl is used as electrolyte, its acidity plays an important role. Phase inversion of microemulsion from type III (or II) to type I is observed through precipitation of Ca2+ using Na2CO3, neutralization of HCl by NaOH, and addition of water to the system, which releases the oil from the microemulsion.

Key words: microemulsion, sodium dodecyl sulfate, kerosene, phase inversion