均相沉淀-发泡法制备纳米氧化锆材料的研究  

A study on preparation of nano-sized zirconia material by uniform precipitation-frothing process

作　　者：孙家跃[1] 肖昂[1] 夏志国[1] 杜海燕[1] 

机构地区：[1]北京工商大学化学与环境工程学院,北京100037

出　　处：《化工新型材料》2005年第7期10-12,共3页New Chemical Materials

基　　金：国家自然科学基金(20476002);北京市自然科学基金(2042007)联合资助项目。

摘　　要：以ZrOCl2·8H2O和尿素为原料,利用均相沉淀发泡工艺制备出了纳米氧化锆粉体材料,并用差热热重(DTATG)、X射线衍射(XRD)、比表面和孔隙度(ASAP)和透射电镜(TEM)等方法对样品进行了表征。结果表明,在600℃下焙烧的氧化锆样品为纯度较高的纳米四方多晶氧化锆粉体,属于介孔材料,氧化锆粉体粒度较均匀、分散性好且平均粒径约为5nm。Nano-sized zirconia powders were prepared from ZrOCI2o8H20 and carbamide by uniform precipitation frothing process. DTA-TG, XRD, ASAP and TEM were used in monitoring the synthetic products. DTA-TG showed that there were two obvious steps of loss of weight, which located among 157℃～276℃ and 276℃～550℃ respectively. The powder calcined at 600℃ was pure zirconia without any other phases by XRD analysis. ASAP technique and the isotherm indicated the specific surface area of 37. 9196 m2/g for zirconia that belonged to the mesoporous material. The TEM result revealed that the obtained zirconia powder by the method had no obvious agglomeration, narrow particle size distribution, and an average particle size of 5nm.

关 键 词：纳米氧化锆材料 均相沉淀-发泡法 制备方法 差热-热重 X射线衍射 比表面 孔隙度 结构表征 

分 类 号：TQ134.12[化学工程—无机化工] TB383[一般工业技术—材料科学与工程]