【果友自选自翻石油英语】之表面活性剂的吸附动力学——摘自SPE95920 [复制链接]

英文文献：

Abstract
This  paper  reports  adsorption/desorption  kinetics  and equilibrium onto Berea sandstone for a surfactant used as a CO₂-water  foaming  agent.  Also,  foam  stability  of  the surfactant is compared before and after adsorption/desortion has occurred. Results show that this surfactant's adsorption onto and desorption from Berea sandstone took several days to reach  equilibrium.  Both  adsorption  and  desorption  were characterized by a short period of rapid adsorption/desorption followed by a longer period of slower adsorption/desorption.Both adsorption and desorption processes were best fit by a pseudo-second-order kinetic model. Coefficients of adsorption and desorption rate were determined. A method to predict equilibrium adsorption density using adsorption process data over  a  relative  short  period  is  proposed,  which  saves considerable  time  in  determining  complete  adsorption isotherms.  Surfactant concentration and temperature affect equilibrium density. Foam stability is affected by selective surfactant adsorption onto the rock.
汉语译文：

摘要
    该文章报道了用作CO₂-水发泡剂的表面活性剂在贝雷砂岩上的吸附/解吸附动力学。另外，比较了吸附/解吸附前后的表面活性剂泡沫稳定性。结果表明该表面活性剂在贝雷砂岩上的吸附和从贝雷砂岩上解吸附达到平衡花费了几天。吸附和解吸附都通过一个快速吸附/解吸附的短阶段紧随一个较慢吸附/解吸附的较长阶段之后来表征。吸附和解吸附过程最适合使用一种拟二阶动力学模型。测定了吸附和解吸附速度的系数。建议了一种使用在相对短阶段里的吸附过程数据来预测平衡吸附密度的方法，它在测定完全吸附等温线方面节省了大量的时间。表面活性剂浓度和温度影响平衡密度。表面活性剂在岩石上的选择性吸附影响了泡沫稳定性。