摘要
利用静态吸附实验法研究了阴离子双子表面活性剂-双烷基乙氧基二硫酸酯钠盐在油砂上的吸附规律。实验结果表明双十二烷基乙氧基二硫酸酯钠盐(GA12-2-12)在油砂上的吸附等温线服从Langmuir等温方程,相同浓度下其吸附量低于常规单链表面活性剂-十二烷基硫酸钠(SDS)。GA12-2-12在油砂上的吸附量随着电解质浓度增大、介质pH值下降、油砂含油量降低而增大。烷基疏水链碳数及间隔基团碳数增加,双烷基乙氧/丁氧基二硫酸酯钠盐在油砂上的吸附量增大。
The performance of static adsorption of anionic Gemini surfactant-didodecyl-ethoxylate-bis-sulfate ester (GA12-2-12) at oil sand was studied. The experimental results indicate adsorption isotherm of GA12-2-12 is correspond with Langmuir's type,and the amount of adsorption of GA12-2-12 is lower than SDS in the same concentration. In addition, it is found that the adsorbance of GA12-2-12 in oil sand is raised with electrolyte concentration increasing, medium pH decreasing, contents of oil in sand reducing and carbon number in lyophobic chain and space group of anionic Gemini-surfactant increasing.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2008年第6期313-317,共5页
Journal of Oil and Gas Technology
基金
石油科技中青年创新基金项目(2002F70116)
关键词
阴离子双子表面活性剂
油砂
静态吸附量
吸附等温线
吸附规律
anionic Gemini surfactant
adsorption isotherm
static adsorbance
oil sand
adsorption discipline.
