摘要
采用部分中和法制备超细TiO2 粉体 ,通过TEM、XRD和TG DTA对产品进行了表征 ,指出水合TiO2 在煅烧过程中逐步失去游离水和化合水 ,再形成TiO2 结晶 ,且随着煅烧温度的上升 ,颗粒的粒度迅速增大。在 6 0 0℃以下煅烧时所形成的TiO2 颗粒为锐钛型 ,在 80
Ultrafine titania was prepared by a partial neutralization process and characterized by TEM, XRD and TG DTA. It is shown that TiO 2 crystal is formed through the evaporation of free and chemically combined water from hydrated titania in the process of calcination and TiO 2 particle size increases rapidly with the increase in calcination temperature. Anatase was formed when the calcination temperature below 600?℃ whereas it transformed into rutile when the calcination temperature reached 800?℃.
出处
《北京化工大学学报(自然科学版)》
CAS
CSCD
2002年第4期11-13,共3页
Journal of Beijing University of Chemical Technology(Natural Science Edition)
基金
中国石油化工股份有限公司资助项目 (X5 0 10 19)