纳米孔ZrO_2气凝胶的制备研究  

Preparation of Nano-Porous Zirconia Aerogel

作　　者：张贺新 赫晓东[1] 李垚[1] 洪长青[1] 

机构地区：[1]哈尔滨工业大学复合材料研究所,哈尔滨150001

出　　处：《航空材料学报》2006年第3期337-338,共2页Journal of Aeronautical Materials

基　　金：国家863项目(2004AA763020);新世纪优秀人才支持计划(NCET2004)

摘　　要：以硝酸氧锆(ZrO(NO3)2.5H2O)为原料,采用水热法和超临界干燥技术制备了ZrO2气凝胶。利用SEM和BET等测试手段对所得气凝胶的结构和孔特征进行表征,分析了孔隙分布情况和孔结构。结果表明:气凝胶具有典型的纳米孔隙结构,孔径5<Dp<60nm,比表面积达916.5m2/g,孔分布均匀。对ZrO2凝胶过程进行了探讨。Nano-porous ZrO_2 aerogels were prepared with zirconyl nitrate dihydrate(ZrO(NO_3)_2.5H_2O) by heating hydro-thermal method subseqently supercritical drying technique.The prepared aerogels are performed by SEM and BET to characterize and analyze the morphology and pores characteric of ZrO_2 aerogels.The results showed that: The areogels are the typical of nano pores in the interval between 5<Dp<60 nm;the specific surface areas reach 916.5m^2/g;There is a homogeneous pore distribution in aerogel.Moreve...

关 键 词：ZrO2气凝胶 水热法 超临界干燥 纳米孔 

分 类 号：TB381[一般工业技术—材料科学与工程]