The self-catalytic role of zirconium n-propoxide in sol-gel syntheses of ZrO2/Y2O3-CeO2 compound powders

摘要：

　　The self-catalytic role of zirconium n-propoxide has been investigated with respect to the synthetic parameters of ZrO2/Y2O3-CeO2 compound powders.When zirconium n-propoxide is prehydrolyzed,the gelation time is prolonged,resulting in a more transparent gel.It is found that gelation time can be shortened with a high concentration of tetraethoxysilane in the presence of a small amount of zirconium n-propoxide.On the basis of the synthetic data,a mechanism for the zirconium n-propoxide catalytic reactions has been discussed.A linear correlation between the mixing level and metal content holds up to 45 mol% of ZrO2/Y2O3 under the studied conditions.

关键词： ZrO2/Y2O3-CeO2 syntheses zirconium n-propoxide tetraethoxysilane hydrolysis

作者: YI Zhongzhou WANG Bo ZHAI Fengrui XlE Zhipeng

作者单位: College of Science, Honghe University, Yunnan 661100, P.R.China Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, P.R.China

会议类型: 国际会议

会议名称: the 2011 International Conference on Frontiers of Manufacturing Science and Measuring Technology (第一届制造科学与检测技术国际会议(ICFMM2011))

会议地点: 重庆

会议语种:英文

页码: 1278-1281

在线出版日期: 2011-06-23（万方平台首次上网日期，不代表论文的发表时间）