Authors:
M. Ellid Tajura Nuclear Research Center Department of Physics Tripoli Libya

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Y. Murayed Tajura Nuclear Research Center Department of Physics Tripoli Libya

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M. Zoto Tajura Nuclear Research Center Department of Physics Tripoli Libya

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S. Musić Ruđer Bošković Institute Division of Materials Chemistry P. O. Box 180 HR-10002 Zagreb Croatia

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S. Popović University of Zagreb Department of Physics, Faculty of Science P. O. Box 331 HR-10002 Zagreb Croatia

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Abstract  

Chemical reduction of hematite with starch in air at elevated temperature was investigated using X-ray powder diffraction, FT-IR and 57Fe Mössbauer spectroscopies. On heating the starting mixture for 0.5 and 2 hours at 300 °C, magnetite and a small fraction of hematite were identified by XRD. With the heating time prolonged up to 24 hours, magnetite reoxidized and hematite was obtained again. The formation of magnetite was observed even at 580 °C. However, the magnetite formed at this temperature was substoichiometric, as shown by XRD and Mössbauer spectroscopy. Characteristic IR bands of oxide phases were monitored by FT-IR spectroscopy. Chemical reduction of hematite with starch into a Fe0 state was not observed in any sample.

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation
1968
Volumes
per Year
1
Issues
per Year
12
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)