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Journal of Sol-Gel Science and Technology
Published in: Journal of Sol-Gel Science and Technology 2/2018

28-03-2018 | Original Paper: Nano- and macroporous materials (aerogels, xerogels, cryogels, etc.)

Facile preparation of ZrCO composite aerogel with high specific surface area and low thermal conductivity

Authors: Sheng Cui, Hao Suo, Feng Jing, Shuwen Yu, Jun Xue, Xiaodong Shen, Benlan Lin, Shengjun Jiang, Yu Liu

Published in: Journal of Sol-Gel Science and Technology | Issue 2/2018

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Abstract

A novel ZrCO composite aerogel is synthesized using zirconium oxychloride and resorcinol–formaldehyde (RF) as precursors through the sol–gel route and carbothermal reduction process. The effects of different Zr/R molar ratios and calcination temperatures on the physical chemistry properties of ZrCO aerogels are investigated. The ZrCO composite aerogel consists of the C/ZrO2/ZrC ternary aerogel. The results show that with the increase of R/Zr molar ratios, the specific surface area and bulk density increase with calcination temperature up to 1300 °C, but decrease at even temperature (1500 °C). The specific surface area is as high as 637.4 m2/g for ZrCO composite aerogel (R:Zr = 2:1), which was higher than ever reported. As the heat-treatment temperature increases to 1500 °C, the ZrC crystalline phase occurs and the t-ZrO2 phase still appears within the composite. The thermal conductivity of the carbon fiber mat-reinforced composite aerogel is as low as 0.057 W/m/K at room temperature (25 °C).
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Metadata
Title
Facile preparation of ZrCO composite aerogel with high specific surface area and low thermal conductivity
Authors
Sheng Cui
Hao Suo
Feng Jing
Shuwen Yu
Jun Xue
Xiaodong Shen
Benlan Lin
Shengjun Jiang
Yu Liu
Publication date
28-03-2018
Publisher
Springer US
Published in
Journal of Sol-Gel Science and Technology / Issue 2/2018
Print ISSN: 0928-0707
Electronic ISSN: 1573-4846
DOI
https://doi.org/10.1007/s10971-018-4638-6

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