摘要
利用控制醇盐水解的方法，分别采用正丁醇共沸蒸馏和乙醇洗涤这两种工艺，详细研究了超细二氧化钛粉体的制备过程．采用ＸＲＤ、ＴＥＭ、ＢＥＴ、ＴＧ和ＤＴＡ等方法对用直接沉淀、正丁醇共沸和乙醇洗涤三种方法获得的粉体进行了表征．发现用直接沉淀和乙醇洗涤法均能获得团聚少、颗粒在１５ｎｍ左右的粉体，且乙醇洗涤能进一步减少粉体的团聚，但共沸蒸馏反而增加了粉体的团聚度．
By controlling the hydration of alkoxide, and with n-butanol azeotropic distillation and ethanol rinsing methods, the preparation process of superfine titania powder was investigated in detail. The characteristics of the powders produced by direct precipitation, n-butanol distillation and ethanol rinsing respectively are studied by XRD, TEM, BET, TG and DTA techniques. It was found that both direct precipitation and ethanol rinsing methods can obtain little-agglomerated nanoscale titania powders of about 15nm in she. Ethanol rinsing can further reduce the agglomeration compared with direct precipitation, while the distillation process enhances the agglomeration.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
1995年第4期423-427,共5页
Journal of Inorganic Materials
基金
国家攀登计划
