Journalartikel

Jahr der Veröffentlichung: 2001

Seiten: 733-748

Zeitschrift: Journal of Thermal Analysis and Calorimetry

Bandnummer: 63

Heftnummer: 3

ISSN: 1418-2874

DOI Link: https://doi.org/10.1023/A:1010187921227

Verlag: Kluwer Academic Publishers

Abstract: 
Synthetic pigments of goethite (Bayferrox(R)) of different particle size were investigated by DTA, IR, DSC, TG and X-ray diffraction measurements. It follows that a so-called 'hydrohematite' described in the literature does not exist as a discrete intermediate during the dehydration course from goethite to hematite. Instead we observed a dependence of the dehydration mechanism on the particle size. Transformation enthalpies and activation energies for the dehydration process will be given. A plausible dehydration mechanism, which is compatible with our DTA/DSC results, is deduced from TEM investigations.

Harvard-Zitierstil: Walter, D., Buxbaum, G. and Laqua, W. (2001) The mechanism of the thermal transformation from goethite to hematite, Journal of Thermal Analysis and Calorimetry, 63(3), pp. 733-748. https://doi.org/10.1023/A:1010187921227

APA-Zitierstil: Walter, D., Buxbaum, G., & Laqua, W. (2001). The mechanism of the thermal transformation from goethite to hematite. Journal of Thermal Analysis and Calorimetry. 63(3), 733-748. https://doi.org/10.1023/A:1010187921227