关键词: 弱碱三元复合体系, 二甲苯基十六烷基磺酸钠, 合成, 界面活性

Abstract: Using α-C₁₆H₃₂ olefin, SO₃ and xylene as raw materials, the product is synthesized by sulfonation, alkylation and neutralization process. The product is characterized by IR and ESI-MS, and their interfacial activity and foaming properties are also evaluated. The IR and MS results show that the synthesized product is dimethyl phenyl hexadecyl sulfonate. The CMC of the product is 0.006 mol/L. The lowest interficial surface tension between the prepared weak base ternary compound system and the crude oil recovered by the Daqing 4th oil field is 3×10^-5mN/m. And the interficial tension is lower when sulfonate concentration is lower in the system. The ASP prepared by the product has a good performance in interficial tension stability for three months. The foaming properties of the target product are better in 150 mg/L hard water than that in distilled water.

Key words: weak base ternary compound system, dimethyl phenyl hexadecyl sulfonate, synthesis, interficial activity