NDLI: The thermal behavior of some polymeric precursors used in CaAl$_{12}$O$

Content Provider	Springer Nature Link
Author	Lazău, I. Păcurariu, C. Băbuţă, R.
Copyright Year	2012
Abstract	CaAl$_{12}$O$_{19}$ was synthesised using three different precursors: (a) a polyesteric type precursor resulted from the traditional Pechini method; (b) a polyesteric type precursor resulted from the reaction between citric acid and calcium and aluminum nitrates; and (c) a polymeric type precursor resulted from the reaction between acrylic acid and calcium an aluminum nitrates. The thermal behavior of the three precursors used in the CaAl$_{12}$O$_{19}$ synthesis was monitored to underline the thermal effects associated to the CaAl$_{12}$O$_{19}$ formation. Thermal analyses performed on precursors do not reveal clear differences regarding the thermal effects assigned to calcium aluminates formation, at temperatures over 800 °C. In contrast, thermal analysis of samples pre-fired at 200 °C, and especially at 600 °C, show clear differences between samples obtained in different ways. It is noted that in samples obtained from acrylic acid and nitrates, and citric acid and nitrates, CA$_{6}$ is practically single phase after calcination at 1,200 °C. However, in the sample obtained from citric acid, ethylene glycol, and nitrates, calcined at 1,200 °C, CA$_{6}$ is present along with CA$_{2}$ and α-Al$_{2}$O$_{3}$.
Starting Page	497
Ending Page	502
Page Count	6
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	110
Issue Number	1
e-ISSN	15728943
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-04-26
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Calcium aluminates Polymeric precursor method Thermal analysis Measurement Science and Instrumentation Inorganic Chemistry Physical Chemistry Polymer Sciences Analytical Chemistry
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

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