The effect of procedural conditions (density of points, initial value of conversion rate) on the accuracy of Sestak-Berggren (AC) simulations was studied. Newly developed software programmed in R-language and using the LSODA initial-value-problem-solver was used to simulate sets of AC kinetic data-sets with increasing precision. Evaluation of the kinetic data-sets was done using the benchmark commercial software, Thermokinetics (Netzsch), to consolidate uniformity of the data treatment. Whereas the points density used during the simulation had no effect on the resulting shape of the kinetic peak (and the corresponding kinetic description), the initial value of conversion rate was found to crucially influence the shape/parameters of the resulting kinetic peak. Importance of utilizing low enough initial values of conversion rate in the AC simulations dramatically increases for positively asymmetric kinetic peaks. Based on the present results, transferability of the kinetic parameters evaluated for the generic/experimental data by different softwares was discussed.

Simulation and non-linear optimization of Sestak-Berggren kinetics

Luciano Giorgio;
2020

Abstract

The effect of procedural conditions (density of points, initial value of conversion rate) on the accuracy of Sestak-Berggren (AC) simulations was studied. Newly developed software programmed in R-language and using the LSODA initial-value-problem-solver was used to simulate sets of AC kinetic data-sets with increasing precision. Evaluation of the kinetic data-sets was done using the benchmark commercial software, Thermokinetics (Netzsch), to consolidate uniformity of the data treatment. Whereas the points density used during the simulation had no effect on the resulting shape of the kinetic peak (and the corresponding kinetic description), the initial value of conversion rate was found to crucially influence the shape/parameters of the resulting kinetic peak. Importance of utilizing low enough initial values of conversion rate in the AC simulations dramatically increases for positively asymmetric kinetic peaks. Based on the present results, transferability of the kinetic parameters evaluated for the generic/experimental data by different softwares was discussed.
2020
Istituto di Scienze e Tecnologie Chimiche "Giulio Natta" - SCITEC
Numerical simulation
Sestak-Berggren kinetics
LSODA
asymmetry
File in questo prodotto:
File Dimensione Formato  
1-s2.0-S0022309320305032-main.pdf

solo utenti autorizzati

Descrizione: VoR
Tipologia: Versione Editoriale (PDF)
Licenza: NON PUBBLICO - Accesso privato/ristretto
Dimensione 1.91 MB
Formato Adobe PDF
1.91 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14243/422802
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 3
  • ???jsp.display-item.citation.isi??? 2
social impact