Skip to main content
SpringerLink
Log in

Experimental approach to the determination of mechanism and kinetics of heterogeneous solid state reactionsA S →B S +C G

  • Published:
Journal of thermal analysis Aims and scope Submit manuscript

Abstract

Structural and morphological investigations of the solid state decomposition process of Ni(SCN)2(C5H5N)4 single crystals to microcrystalline Ni(SCN)2(C5H5N)2 reveal a ‘contracting sphere reaction mechanism’. Reconsidering possible artefacts registered by quantitative thermoanalytical measurements a pathway for the determination of specific and reproducible kinetic parameters for the rate-limiting step is described.

Zusammenfassung

Strukturelle und morphologische Untersuchungen der Zersetzung von Ni(SCN)2(C5H5N)4-Einkristallen zu polykristallinem Ni(SCN)2(C5H5N)2 haben gezeigt, da\ diese Festkörperreaktion nach einem “Kugelkontraktions-Reaktionsmechanismus” verlÄuft. Unter Berücksichtigung der bei quantitativen thermoanalytischen Messungen möglicherweise auftretenden Artetakte wurde ein Weg zur Bestimmung der spezifischen und reproduzierbaren kinetischen Parameter für den geschwindigkeitsbestimmenden Schritt aufgezeigt.

РЕжУМЕ

стРУктУРНыЕ И МОРФОл ОгИЧЕскИЕ ИсслЕДОВА НИь тВЕРДОтЕльНОгО пРОц ЕссА РАжлОжЕНИь МОНОкРИстАллОВ кОМп лЕксА Ni(SCN)2(C5H5N)4 ДО МИкРОкРИстАллИЧЕск ОгО Ni(SCN)2(C5H5N)2 ОБНАРУжИлИ “МЕх АНИжМ РЕАкцИИ тИпА сжИМАЕМОИ сФЕРы”. пЕР ЕсМАтРИВАь жАНОВО ФАкты, ОтМЕЧЕН НыЕ НА ОсНОВЕ кОлИЧЕс тВЕННых тЕРМОАНАлИтИЧЕскИх ИжМЕРЕНИИ, ОпИсАН пУть ОпРЕДЕлЕ НИь спЕцИФИЧЕскИх И ВОспРОИжВОДИМых кИН ЕтИЧЕскИх пАРАМЕтРО В Дль стАДИИ, ОпРЕДЕльУ ЩЕИ скОРОсть РЕАкцИИ.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. M. A. Poraj-Koshits, Russ. J. of Inorg. Chem., 4 (1959) 332.

    Google Scholar 

  2. A. Reller, Ph. D. Thesis, University of Zürich, 1981.

  3. E. Dubler, A. Reller and H. R. Oswald, Z. Kristallogr., 161 (1982) 265.

    Google Scholar 

  4. B. Delmon, Introduction à la cinétique hétérogène, Technip, Paris, 1969.

    Google Scholar 

  5. H. R. Oswald, A. Reller and M. Maciejewski, Thermochim. Acta, 72 (1984) 139.

    Article  Google Scholar 

  6. N. Lyakhov, A. Reller et al., in preparation.

  7. A. Reller and H. R. Oswald, to be submitted.

Download references

Author information

Authors and Affiliations

  1. Institute for Inorganic Chemistry, University of Zürich, Winterthurerstrasse 190, 8057, Zürich, Switzerland

    A. Reller & H. R. Oswald

Authors
  1. A. Reller
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. H. R. Oswald
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Reller, A., Oswald, H.R. Experimental approach to the determination of mechanism and kinetics of heterogeneous solid state reactionsA S →B S +C G . Journal of Thermal Analysis 29, 1013–1016 (1984). https://doi.org/10.1007/BF02188853

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02188853

Keywords

Search

Navigation