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Shift of the centroid of the Co Kα peak of Co 3 O 4 converted from CoCO 3 by various calcination parameters
Author(s) -
Rosales P. A.,
Carías O.,
Labrecque J. J.
Publication year - 1985
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/xrs.1300140411
Subject(s) - calcination , centroid , analytical chemistry (journal) , coco , materials science , work (physics) , particle size , mineralogy , chemistry , thermodynamics , mathematics , physics , geometry , chromatography , catalysis , organic chemistry , artificial intelligence , computer science
The calcination of CoCO 3 in air results in Co 3 O 4 with particle sizes depending on the heating temperature: the lower the temperature, the smaller is the particle size. It was previously reported that the centroid of the Co Kα peak shifted greatly (>500 eV) when the product (Co 3 O 4 ) was formed by different calcination temperatures between 200 and 700°C. In the work, attempts were made to reproduce these results by using not only variable temperature but also variable time, and determined the centroid with a high‐resolution Si(Li) detector rather than a scintillation counter. The results showed the shifts to be about ten times smaller than previously reported. The shift of the Co Kα peak centroid has been estimated to be less than 30 eV.