Thermoanalytical investigations on the decomposition of transition metal oxalate complexes using selective CO, CO2 and H2O monitors

A. Horváth, J. Kristóf

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Simultaneous TG, DTG, DTA measurements along with the continuous and selective monitoring of carbon monoxide, carbon dioxide and water evolved were carried out on K3[M(C2O4)3].3H2O-type transition metal complexes (where M=Cr, Fe and Co). Based on the comparison of the recorded curves a detailed description of the decomposition mechanism was possible. In the case of the cobalt complex an exothermic process corresponding to modification of electron configuration is superimposed on the endothermic dehydration reaction. The reduction of the cobalt central atom - dissimilarly to that of chromium and iron - takes place in two steps. The carbon monoxide detector developed recently proved to be an important tool in the study of the decomposition of these complexes.

Original languageEnglish
Pages (from-to)1471-1480
Number of pages10
JournalJournal of Thermal Analysis
Volume36
Issue number4
DOIs
Publication statusPublished - Jul 1990

Fingerprint

Oxalates
oxalates
Carbon Monoxide
Metal complexes
Cobalt
Carbon monoxide
carbon monoxide
Transition metals
monitors
cobalt
transition metals
Decomposition
decomposition
Coordination Complexes
Chromium
Dehydration
Carbon Dioxide
dehydration
Differential thermal analysis
carbon dioxide

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Engineering(all)

Cite this

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abstract = "Simultaneous TG, DTG, DTA measurements along with the continuous and selective monitoring of carbon monoxide, carbon dioxide and water evolved were carried out on K3[M(C2O4)3].3H2O-type transition metal complexes (where M=Cr, Fe and Co). Based on the comparison of the recorded curves a detailed description of the decomposition mechanism was possible. In the case of the cobalt complex an exothermic process corresponding to modification of electron configuration is superimposed on the endothermic dehydration reaction. The reduction of the cobalt central atom - dissimilarly to that of chromium and iron - takes place in two steps. The carbon monoxide detector developed recently proved to be an important tool in the study of the decomposition of these complexes.",
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T1 - Thermoanalytical investigations on the decomposition of transition metal oxalate complexes using selective CO, CO2 and H2O monitors

AU - Horváth, A.

AU - Kristóf, J.

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N2 - Simultaneous TG, DTG, DTA measurements along with the continuous and selective monitoring of carbon monoxide, carbon dioxide and water evolved were carried out on K3[M(C2O4)3].3H2O-type transition metal complexes (where M=Cr, Fe and Co). Based on the comparison of the recorded curves a detailed description of the decomposition mechanism was possible. In the case of the cobalt complex an exothermic process corresponding to modification of electron configuration is superimposed on the endothermic dehydration reaction. The reduction of the cobalt central atom - dissimilarly to that of chromium and iron - takes place in two steps. The carbon monoxide detector developed recently proved to be an important tool in the study of the decomposition of these complexes.

AB - Simultaneous TG, DTG, DTA measurements along with the continuous and selective monitoring of carbon monoxide, carbon dioxide and water evolved were carried out on K3[M(C2O4)3].3H2O-type transition metal complexes (where M=Cr, Fe and Co). Based on the comparison of the recorded curves a detailed description of the decomposition mechanism was possible. In the case of the cobalt complex an exothermic process corresponding to modification of electron configuration is superimposed on the endothermic dehydration reaction. The reduction of the cobalt central atom - dissimilarly to that of chromium and iron - takes place in two steps. The carbon monoxide detector developed recently proved to be an important tool in the study of the decomposition of these complexes.

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