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Solid state reaction between dichromates and oxalates

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Abstract

The thermal investigation of the reaction taking place between dichromates and oxalates in the solid state has been done taking two systems of potassium dichromate-potassium oxalate and sodium dichromate-sodium oxalate. The techniques employed include thermogravimetry, differential thermal analysis, infrared spectroscopy and X-ray diffraction studies. The results indicate a stoichiometric reaction of dichromate and oxalate in 1∶1 ratio to give the corresponding chromate as the sole product.

Zusammenfassung

Anhand der Systeme Kaliumdichromat-Kaliumoxalat bzw. Natriumdichromat-Natriumoxalat wurde eine thermische Untersuchung der Festkörperreaktion zwischen Dichromaten und Oxalaten durchgeführt. Dazu wurden thermogravimetrische, dififerentialthermoanalytische, IR-spektroskopische und Röntgendiffraktionsverfahren angewendet. Im Ergebnis zeigte sich eine stöchiometrische Reaktion von Dichromat und Oxalat im Verhältnis 1∶1, die das entsprechende Chromat als einziges Produkt liefert.

Резюме

Методами ТГ, ДТА, ИК спе ктроскопии и рентгенофазового ан ализа проведено исследование твердо тельной реакции межд у бихроматами и оксала тами на примере двух с истем бихромат калия — окса лат калия и бихромат н атрия —оксалат натрия. Результаты по казали, что реакция дихромат а и оксалата при стехиометрическом и х соотношении 1∶1 приво дит к образованию соответ ствующего хромата в к ачестве единственного проду кта.

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Suba, K., Udupa, M.R. Solid state reaction between dichromates and oxalates. Journal of Thermal Analysis 35, 1197–1203 (1989). https://doi.org/10.1007/BF01913038

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  • DOI: https://doi.org/10.1007/BF01913038

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