摘要
目的研究铝酸钠溶液晶种分解过程中阴离子表面活性剂的作用机理.方法在铝酸钠溶液晶种分解过程中,加入适量的I1、I2、I3、I4阴离子表面活性剂类添加剂可以强化分解过程,提高分解产物氢氧化铝的粒度和强度.采用紫外可见分光光度计测定了添加剂的重要组分——油酸的吸附平衡时间及吸附等温线;借助红外光谱确定阴离子表面活性剂在氢氧化铝颗粒表面的吸附方式.结果在试验条件下,油酸40 mim即达到吸附平衡;在铝酸钠溶液晶种分解过程中,阴离子表面活性剂主要通过静电力作用吸附到氢氧化铝颗粒表面.结论确定了铝酸钠溶液晶种分解体系油酸在氢氧化铝界面的等温吸附方程.
The paper researches the mechanism of anion surfac tant in sodium aluminate solution decomposition process. In sodium aluminate solution decomposition process, adding proper anion surface - agent types of additives I1, I2, I3, I4 can accelerate decomposition process, and enhance the particle size and intensity of decomposition products Al（OH）3. We use UV-visible photometer to detect adsorption rate curve and adsorption isotherm curve of oleic acid;and use IR to determine the type of anion surfactant adsorption to the surface of Al（OH）3. Under the experimental conditions, oleic acid achieves after 40 minutes. Using IR, sodium aluminate solution decomposition process, anion surfactant was adsorbed to the surface of Al（OH）3 mainly through the static electricity. We determined isothermal adsorption equation of oleic acid in the Al（OH）3 interface in decomposition of sodium aluminate solution.
出处
《沈阳建筑大学学报（自然科学版）》
EI
CAS
2007年第6期957-960,共4页
Journal of Shenyang Jianzhu University：Natural Science
基金
辽宁省教育厅计划项目(202080719)
关键词
阴离子表面活性剂
铝酸钠溶液
晶种分解
油酸
吸附
anion surfactant
sodium aluminate solution
seed precipitation
oleic acid
adsorption
