Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 62: Issue 1
Physico-chemical Studies on Thermal Decomposition of Alkali Tris(maleato)ferrates(III)
Authors:
B. Randhawa G.N.D.U. Department of Chemistry Amritsar 143005 India Amritsar 143005 India

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Kamaljeet Sweety G.N.D.U. Department of Chemistry Amritsar 143005 India Amritsar 143005 India

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Pages:
295–304
Online Publication Date:
02 Nov 2004
Publication Date:
01 Oct 2000
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1010147703191
Keywords:
alkali Fe(III)maleates; DTA; ferrites; Mössbauer spectra; TG; thermal decomposition
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Abstract  

The thermal decomposition of alkali tris(maleato)ferrates(III), M3 [Fe(C2 H2 C2 O4 )3 ] (M =Li, Na, K) has been studied isothermally and non-isothermally employing simultaneous TG-DTG-DTA, XRD, Mssbauer and IR spectroscopic techniques. The anhydrous complexes decompose in the temperature range 215–300C to yield Fe(II)maleate as an intermediate followed by demixing of the cations forming α-Fe2 O3 and alkali metal maleate/oxalate in successive stages. In the final stage of remixing of the cations (430–550C) a solid state reaction occurs between α-Fe2 O3 and alkali metal carbonate leading to the formation of fine particles of respective ferrites. The thermal stabilities of the complexes have been compared with that of alkali tris(oxalato)ferrates(III).

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
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 1388-6150 (Print)
ISSN 1588-2926 (Online)

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