摘要
研究了亚甲基蓝阳离子分别在钠、铝和铁蒙脱土上的吸附反应。结果表明，亚甲基蓝在三种蒙脱土上的吸附等温线均呈现 Ｌａｎｇｍ ｕｉｒ 型，但在低吸附量区域，钠蒙脱土上的吸附等温线发生了非单调变化。这反映不同交换性阳离子对蒙脱土的结构和性质有不同的影响，使粘土表面吸附分子层的分布和分子之间侧向作用力不同。由饱和吸附量计算了悬浮体中三种蒙脱土的比表面积。
The adsorption of methylene blue on Na ,Al ,and Fe montmorillonites (Na M, Al M, and Fe M) from aqueous solution is studied at 298.15±0.05K. The initial section of isotherm at low coverage degrees for Na M is nonmonotonic and is explained by the densification of the adsorbed methylene blue molecules in adsorption layers beyond certain adsorption amount reached (～0.11 mmol/g in this case) and the abrupt decrease of the equillibrium concentration thus resulted. The specific surface area of Na M, Al M, and Fe M particles suspended in methylene blue solution is calculated from the adsorption date obtained as 705, 525, and 504 m 2/g, respectively.
出处
《油田化学》
CAS
CSCD
北大核心
1999年第3期195-197,共3页
Oilfield Chemistry
关键词
亚甲基蓝
钠蒙脱土
铝蒙脱土
铁蒙脱土
溶液吸附
Methylene Blue
Na Montmorillonite
Al Montmorillonite
Fe Montmorillonite
Adsorption
Adsorption from Solution
Specific surface Area
