月桂酸盐在粘土矿物上的吸附  

An Investigation on the Adsorption of Sodium Laurate to Clay

作　　者：朱瑶 何煦[1] 蔡瑾 吕振宇 黄建滨[1] 张禹负[2] 刘华[2] 徐冠军 

机构地区：[1]北京大学化学学院,北京100871 [2]北京石油大学化学化工学院,北京100083

出　　处：《日用化学工业》2000年第2期1-3,共3页China Surfactant Detergent & Cosmetics

摘　　要：研究了钙蒙脱土从 p H9.6的碳酸钠 -碳酸氢钠缓冲溶液中对月桂酸钠的吸附。 30℃和 2 5℃时得到双平台型吸附等温线 ,35℃时得到的吸附等温线显示三个吸附平台。根据两阶段吸附理论计算了吸附特性参数和吸附热力学参数 ,并对结果进行解释。The adsorption of sodium laurate on calcium montmorilonite from the aqueous solution of Na 2CO 3 NaHCO 3(pH9.6)at various temperatures was investigated.The adsorption isotherms of LS type were obtained in the system at 25 and 30℃,while an isotherm of three plateaus obtained at 35℃.According to the two steps adsorption model and the general adsorption isotherm equation [6] ,the specific parameters for adsorption and adsorption thermodyamic parameters were calculated.Explanation on the mechanism of adsorption in the system was provided also.

关 键 词：吸附 钙蒙脱土 月桂酸盐 粘土矿物 表面活性剂 

分 类 号：TQ423[化学工程]