Detail publikačního výsledku

The kinetics and mechanism of thermal decomposition of SrCO3 polymorphs

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

Original Title

The kinetics and mechanism of thermal decomposition of SrCO3 polymorphs

English Title

The kinetics and mechanism of thermal decomposition of SrCO3 polymorphs

Type

WoS Article

Original Abstract

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.

English abstract

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.

Keywords

SrCO3; Strontianite; Transformation; Thermal decomposition; Kinetics

Key words in English

SrCO3; Strontianite; Transformation; Thermal decomposition; Kinetics

Authors

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

RIV year

2016

Released

01.01.2015

Publisher

ELSEVIER SCI LTD

Location

THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND

ISBN

0272-8842

Periodical

Ceramics International

Volume

41

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

115

Pages to

126

Pages count

12

URL

https://www.sciencedirect.com/science/article/pii/S0272884214012802

Full text in the Digital Library

http://hdl.handle.net/

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",
  journal="Ceramics International",
  year="2015",
  volume="41",
  number="1",
  pages="115--126",
  doi="10.1016/j.ceramint.2014.08.043",
  issn="0272-8842",
  url="https://www.sciencedirect.com/science/article/pii/S0272884214012802"
}