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On the thermal decomposition of [Fe2NiO(CH3COO)6(H2O)3]·2H2O

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Abstract

The heteronuclearΜ-oxoacetate with the composition [Fe2NiO(CH2COO)6(H2O)3]·2H2O decomposed on heating, forming nickel ferrite NiFe2O4 and (depending on the decomposition conditions) in part other solid phases. H2O, CH3COOH, acetone and CO2 were also formed in the decomposition. A reaction scheme is given for the decomposition. The products were porous powders with grain diameters between 3 and 10Μm. On increase of the temperature of decomposition from 300 to 800 ‡C, the BET surface area and the surface area of the pores decreased, but only a small alteration in grain size was observed. As a result of thermal treatment in the temperature region abone 800‡C, larger aggregates of grains were formed in sintering processes.

Zusammenfassung

HeteronukleareΜ-Oxoazetate der Zusammensetzung [Fe2NiO(CH3COO)6(H2O)3]·2H2O werden durch Erhitzen zersetzt, wobei Nickelferrite NiFe2O4 und — in AbhÄngigkeit von den Bedingungen der Zersetzung — mit einem Teil anderer fester Phasen gebildet wird. In der Zersetzungsreaktion werden auch H2O, CH3COOH, Azeton und CO2 gebildet. Es wird ein Reaktionsschema für die Zersetzung angegeben. Die Produkte sind poröse Pulver mit einem Korndurchmesser zwischen 3 und 10 m. Wird die Zersetzungstemperatur von 300 auf 800‡C erhöht, nimmt die BET-OberflÄche und die PorenoberflÄche ab, wobei sich die Korngrö\e aber nur wenig verÄndert. Im Ergebnis der WÄrmebehandlung im Temperaturbereich oberhalb 800‡C werden durch Sinterprozesse grö\ere Partikelaggregate gebildet.

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Authors and Affiliations

  1. Department of Chemistry, Technical University, Dresden, Germany

    H. Langbein & P. Eichhorn

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  1. H. Langbein
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  2. P. Eichhorn
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Langbein, H., Eichhorn, P. On the thermal decomposition of [Fe2NiO(CH3COO)6(H2O)3]·2H2O. Journal of Thermal Analysis 37, 993–1003 (1991). https://doi.org/10.1007/BF01932797

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  • DOI: https://doi.org/10.1007/BF01932797

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