【作者】 刘秀琳； 徐红燕； 李梅； 孟宪平； 王琪珑； 蒋民华； 崔得良；

【Author】 LIU Xiu-lin , XU Hong-yan , LI Mei, MENG Xian-ping, WANG Qi-long,JIANG Min-hua , CUI De-liang( State Key Lab of Crystal Materials, Shandong University, Ji’nan 250100, China; School of Chemistry & Chemical Engineering, Shandong University, Ji’nan 250100, China;National Natural Science Foundation of China, Beijing 100085, China;)

【机构】 山东大学晶体材料国家重点实验室； 国家自然科学基金委员会计划局； 山东大学化学与化工学院；

【摘要】 利用溶剂热压方法,以ZrO2(5%Y2O3)纳米粉和几种不同的溶剂为原料。制备了一种新型的体块ZrO2多孔纳米固体,利用X射线衍射(XRD)、透射电子显微镜(TEM)、压汞仪和差热-热重(DTA-TGA)分析方法对样品进行了表征。进一步地,我们研究了溶剂的种类、温度和压力对ZrO2多孔纳米固体的孔容及孔径分布的影响,并对zrO2多孔纳米固体的热稳定性进行了初步分析。测试结果表明:制备的ZrO2多孔纳米固体的孔径分布范围很窄,孔容为0.1-0.2cc/g,比表面积为30-50m2/g,孔隙率为35%-45%;另外,通过改溶剂的种类、温度和压力可以在一定程度上调变多孔纳米固体的孔径、孔容及比表面积。更多还原

【Abstract】 Bulk ZrO2 porous nanosolids were prepared by a unique solve thermal hot press method, using ZrO2 (5%Y2O3) nanoparticles and several kinds of solvents as starting materials. The samples were characterized by X-ray diffraction, transition electron microscope, mercury intrusion porosimetry and thermal analysis method. The effects of the solvent species, hot press temperature and pressure on the pore volume and pore radius distribution were investigated. Besides, the thermal stability of ZrO2 porous nanosolids was also preliminarily studied. The experimental results showed that, the pore size was rather uniform, the pore volume, specific surface area and porosity were in the range of 0.1-0.2cc/g, 30-50m2/g and 35-45% respectively. In addition, the pore diameter, pore volume and the surface area of ZrO2 porous nanosolids could be controlled by changing the solvent species, hot press temperature and pressure.更多还原