Mathematical approach to investigation of synthesis processes at high temperatures |
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Authors: | Ma?vydas Mackevi?ius Feliksas Ivanauskas Aivaras Kareiva |
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Institution: | 1.Institute of Mathematics and Informatics,Vilnius,Lithuania;2.Department of Mathematics and Informatics,Vilnius University,Vilnius,Lithuania;3.Department of Chemistry,Vilnius University,Vilnius,Lithuania |
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Abstract: | In our work, we present a method for estimation of the diffusion and reaction rates of synthesis at high temperatures using
limited information from laboratory experiments, such as synthesis time and dimensions of reactants. Synthesis by sol-gel
and solid-state reactions is considered. The inverse modeling problem is solved for one- and two-dimensional models. Explicit
formulas for the diffusion coefficient and reaction rate as functions of temperature are obtained. The activation energies
are calculated, and the lower bounds of diffusion and reaction rates are estimated, thus obtaining conditions for occurrence
of synthesis.
![MediaObjects/11532_2011_159_Fig1_HTML.jpg](/content/P74QQ30X7U65G066/MediaObjects/11532_2011_159_Fig1_HTML.jpg) |
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