超细二氧化锆干燥方式探讨  

Study on drying methods of nanometer ZrO_(2)particles

作　　者：郑育英[1] 黄慧民[1] 邓淑华[1] 周立清[1] 

机构地区：[1]广东工业大学轻工化工学院,广东广州510090

出　　处：《无机盐工业》2005年第9期15-16,共2页Inorganic Chemicals Industry

基　　金：广东省重点工业攻关项目(A10701);广东省自然科学基金团队项目(04205301);广东省重大工业攻关项目(2004A10701005)。

摘　　要：介绍了几种常用的制备纳米粉体的干燥方法。研究了水热反应制备二氧化锆粉体过程中,直接干燥法、共沸蒸镏和超临界干燥3种常用的干燥方法对最终产品粒子大小和微观形态的影响。通过比较,直接干燥法制备的纳米粒子粒径大于100 nm,而采用共沸蒸馏和超临界干燥制得的粉体分散性好,可制备出粒径小于10 nm的粉体。因此,共沸蒸馏和超临界干燥法是良好的干燥方法。The several common drying methods for the preparation of nanometer powders are introduced. The influences of three kinds of drying method （direct drying,azeotropic distillation and supercritical drying）on the size and microcosmic configuration of zirconia particles in the preparation of zirconia by hydrothermal reaction are studied. The results show that when the direct drying method is used the size of nanometer particle prepared is more than 100 nm. While azeotropic distillation and supercritical drying methods are used,the powder prepared has good dispersity with the size of less than 10 nm. Thus, the latter is good method.

关 键 词：二氧化锆 共沸蒸馏 超临界干燥 

分 类 号：TQ134.12[化学工程—无机化工]