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Vol. 27 No. 4 (2015): Vol 27 Issue 4

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Synthesis and Kinetics of Nano-Mullite via Micro-Boiling Method

https://doi.org/10.14233/ajchem.2015.17190
Zhongzheng Yang
Provincial Key Materials Lab, North China University of Water Resources and Electric Power, Zhengzhou 450011, P.R. China
Yagang Yao
Provincial Key Materials Lab, North China University of Water Resources and Electric Power, Zhengzhou 450011, P.R. China
C.P. Wong
School of Materials Science and Engineering, Georgia Institute of Technology, 30324 Atlanta, USA

Corresponding Author(s) : Zhongzheng Yang

yangzz01@163.com

Asian Journal of Chemistry, Vol. 27 No. 4 (2015): Vol 27 Issue 4

Abstract

Synthesis and activation energy of nano-mullite by micro-boiling method using aluminum nitrate and silica sol as starting materials were studied. Results show that mullite of 3:1 of Al/Si molar ratio begin to form at 854 °C and mullitization is finished at 1200 °C and its mean size is 31.7 nm, grain size distribution is homogenous (20-50 nm), Al2O3 content is 59.8 mol %, activation energy is 634.52 ± 28.90 KJ mol-1, appears characteristics of acicular and the interlocking continuous network structure. The activation energy of synthesizing mullite will gradually decrease with increase of Al/Si molar ratio from 3:1 to 6:1.

Keywords

Nano-mullite Micro-boiling Activation energy Additive
Yang, Z., Yao, Y., & Wong, C. (2015). Synthesis and Kinetics of Nano-Mullite via Micro-Boiling Method. Asian Journal of Chemistry, 27(4), 1227–1230. https://doi.org/10.14233/ajchem.2015.17190
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