Calcium monoaluminate was synthesized using the sol-gel method and the effect of europium and neodymium oxides on the synthesis and kinetics of structure formation in the temperature range of 500 – 1000 ?С was studied
It has been established that the formation of the structure of calcium monoaluminate occurs at a temperature of 1000 ?C and with exposure for 4 hours of a xerogel obtained on the basis of a mixture of Al(NO3)3 + Ca(NO3)2 at a ratio of compounds of 2 : 1, respectively. In the sample obtained, the intermediate mineral is mayenite Ca12Al14O33. With the introduction of mineralizing europium oxide Eu2O3 in an amount of 1.5 wt. % over 100 wt. % into the Al(NO3)3 + Ca(NO3)2 composition, at a synthesis temperature of 1000 ?C, the exposure time for the maximum formation of calcium monoaluminate is reduced to 1 hour. In samples containing Nd2O3, for the maximum formation of calcium monoaluminate at the same exposure time, it is required to introduce it in an amount of 5 wt. %.
Fakhriddin G. Khomidov – PhD, Senior Researcher at the Laboratory “Chemistry and Chemical Technology of Silicates”, Institute of General and Inorganic Chemistry of the Academy of Sciences of the Republic of Uzbekistan., Tashkent, Uzbekistan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Zulayho R. Kadyrova – Doctor of Chemical Sciences, Professor, Head of the Laboratory “Chemistry and Chemical Technology of Silicates”, Institute of General and Inorganic Chemistry of the Academy of Sciences of Uzbekistan, Tashkent, Uzbekistan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
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