应用化学 ›› 1998, Vol. 0 ›› Issue (3): 85-87.

• 研究论文 • 上一篇    下一篇

十二烷基聚氧乙烯醚磷酸酯的水解稳定性

王业飞, 赵福麟   

  1. 石油大学采油化学研究室 东营257062
  • 收稿日期:1997-12-02 修回日期:1998-03-16 出版日期:1998-06-10 发布日期:1998-06-10

Hydrolytic Stability of Lauryl Polyoxyethylene Phosphate

Wang Yefei, Zhao Fulin   

  1. Oil Production Chemistry Laboratory, University of Petroleum, Dongying 257062
  • Received:1997-12-02 Revised:1998-03-16 Published:1998-06-10 Online:1998-06-10

摘要: 烷基聚氧乙烯醚磷酸酯(AEP)和烷基聚氧乙烯醚硫酸酯(AES)由于其优良的表面活性和 耐盐能力已经被应用于众多领域.在很多石油回收过程中,也在考虑这两种表面活性剂的使 用可能性[1~3].由于它们均属酯盐型表面活性剂,在应用时还须考虑它们的水解稳定性.AES的水解稳定性已有详细研究,并已建立水解动力学模型以便预测这种表面活性剂的使用寿命[4].但对AEP进行的工作较少,至今还未得到相关因素对水解规律的影响程度及变化规律,因此无法提出这种表面活性剂使用时的限制条件.

关键词: 十二烷基聚氧乙烯醚磷酸酯, 水解, 动力学

Abstract: The hydrolytic stability of lauryl polyoxyethylene phosphate in aqueous solution has been studied by using the kinetic model. The results showed that the hydrolysis reaction followed first order with respect to phosphate concentration. The activation energy increased with the pH value of the buffered solution, but the rate constant decreased as pH increased. Addition of NaCl weakly suppressed the hydrolysis.

Key words: lauryl polyoxyethylene phosphate, hydrolysis, kinetics