Detail publikace

The kinetics and mechanism of thermal decomposition of SrCO3 polymorphs

PTÁČEK, P. BARTONÍČKOVÁ, E. ŠVEC, J. OPRAVIL, T. ŠOUKAL, F. FRAJKOROVÁ, F.

Originální název

The kinetics and mechanism of thermal decomposition of SrCO3 polymorphs

Anglický název

The kinetics and mechanism of thermal decomposition of SrCO3 polymorphs

Jazyk

en

Originální abstrakt

The alpha -> beta transformation between orthorhombic (alpha) and hexagonal (beta) polymorphs of strontium carbonate has significant effect on the behavior of SrCO3 during thermal treatment. The kinetics, mechanism and thermodynamics of activated complex in the process of thermal decomposition were investigated by non-isothermal thermogravimetric analysis (TGA) using mechanism-free (Kissinger equation) as well as kinetic function fitting methods. Both techniques as well as the calculation of theoretical activation energy (third law method) show that the transformation of alpha-SrCO3 to beta-SrCO3 reduces the activation energy and changes the mechanism of the process.

Anglický abstrakt

The alpha -> beta transformation between orthorhombic (alpha) and hexagonal (beta) polymorphs of strontium carbonate has significant effect on the behavior of SrCO3 during thermal treatment. The kinetics, mechanism and thermodynamics of activated complex in the process of thermal decomposition were investigated by non-isothermal thermogravimetric analysis (TGA) using mechanism-free (Kissinger equation) as well as kinetic function fitting methods. Both techniques as well as the calculation of theoretical activation energy (third law method) show that the transformation of alpha-SrCO3 to beta-SrCO3 reduces the activation energy and changes the mechanism of the process.

Dokumenty

BibTex


@article{BUT113854,
  author="Petr {Ptáček} and Eva {Bartoníčková} and Jiří {Švec} and Tomáš {Opravil} and František {Šoukal} and Františka {Frajkorová}",
  title="The kinetics and mechanism of thermal decomposition of SrCO3 polymorphs",
  annote="The alpha -> beta transformation between orthorhombic (alpha) and hexagonal (beta) polymorphs of strontium carbonate has significant effect on the behavior of SrCO3 during thermal treatment. The kinetics, mechanism and thermodynamics of activated complex in the process of thermal decomposition were investigated by non-isothermal thermogravimetric analysis (TGA) using mechanism-free (Kissinger equation) as well as kinetic function fitting methods. Both techniques as well as the calculation of theoretical activation energy (third law method) show that the transformation of alpha-SrCO3 to beta-SrCO3 reduces the activation energy and changes the mechanism of the process.",
  address="ELSEVIER SCI LTD",
  chapter="113854",
  doi="10.1016/j.ceramint.2014.08.043",
  howpublished="print",
  institution="ELSEVIER SCI LTD",
  number="1",
  volume="41",
  year="2015",
  month="january",
  pages="115--126",
  publisher="ELSEVIER SCI LTD",
  type="journal article in Web of Science"
}