Preparation and characterization of high surface area ZrO2 aerogel modified by SiO2

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• 作者：Jing Ren ; Xiaobo Cai ; Hui Yang ; Xingzhong Guo
• 关键词：Aerogel ; Zirconia ; Atmospheric pressure drying ; Sol–gel ; Formamide
• 刊名：Journal of Porous Materials
• 出版年：2015
• 出版时间：August 2015
• 年：2015
• 卷：22
• 期：4
• 页码：973-978
• 全文大小：1,221 KB
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• 作者单位：Jing Ren (1)
  Xiaobo Cai (1)
  Hui Yang (1)
  Xingzhong Guo (1)
  
  1. School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, People’s Republic of China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Catalysis
  Characterization and Evaluation Materials
  Physical Chemistry
  
• 出版者：Springer Netherlands
• ISSN：1573-4854

文摘

Monolithic high surface area ZrO2 aerogel modified by SiO2 was successfully prepared by a sol–gel process followed by atmospheric pressure drying, using formamide as a drying control chemical additive and tetraethoxysilane solution for modification. The microstructure of the resultant core–shell ZrO2/SiO2 aerogel was characterized by scanning electron microscopy, X-ray photoelectron spectroscopy and transmission electron microscopy. Appropriate choice of formamide and tetraethoxysilane solution allowed the formation of the core–shell ZrO2/SiO2 aerogel with a BET surface area of 619?m2/g, a pore size of 8.2?nm and a bulk density of 0.202?g/cm3.