摘要
利用铋盐(硝酸铋,氯化铋)在酸性条件下强制水解反应,制备了氯化氧铋均分散胶体粒子.在水解过程中,通过测定溶液的透光率和电导率的变化分析铋粒子形成的动力学过程.分析了氯化氧铋粒子的生成、生长条件和影响因素.发现宏观上不参加反应的物质,例如硫酸钠,烷基苯磺酸等,影响粒子的大小和形状.初步认为这些物质通过与粒子的吸附,改变粒子的表面性质,影响铋离子或氯化氧铋进一步结晶到粒子上去.
The procedure has been developed which yields biamuth oxychoride particles of narrow size distribution by the forced hydrolysis of biamuth nitrate solution in nitric acid at an elevated temperature. The dynamic process of the particle formation was analysed by determining the variations of transparence and electrical conductivity in the hydrolysis reaction. It was found that some materials, such as sodium sulphate and dodecylbenzenesulphonic acid, which did not participate in the formation of the product but affected the size and shape of the particles. These materials changed the surface properties of the particles and affected the crystallization of biamuthic ion or biamuth oxychoride attached to the particles by absorbing them.
出处
《青岛化工学院学报（自然科学版）》
1992年第4期25-30,共6页
Journal of Qingdao Institute of Chemical Technology(Natural Science Edition)
关键词
铋
化合物
均分散体系
粒子
monodispersion
biamuth oxychoride
particle
