Spectroscopic and thermoanalytical characterization of standard substances for the identification of reaction products on iron electrodes |
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Authors: | G Nauer P Strecha N Brinda-Konopik G Liptay |
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Institution: | (1) Institute for Physical Chemistry, University of Vienna, Währingerstrasse 42, 1090 Wien, Austria;(2) Department of Inorganic Chemistry, Technical University of Budapest, Gellért Tér 4, 1521 Budapest, Hungary |
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Abstract: | The in situ spectroscopic investigation of electrochemical, and especially corrosion processes in iron requires well-characterized reference substances. It has been found that the application of spectroscopic methods alone is not sufficient for the detection of impurities in certain phases. Thermoanalytical methods have therefore additionally been used to detect impurities and to optimize the preparation methods. Infrared and Raman spectra and thermoanalytical data on -FeOOH, -FeOOH, -FeOOH, -FeOOH and on amorphous iron(III) hydroxide sol are reported.
Zusammenfassung Die in situ-Untersuchung von elektrochemischen und speziell von Korrosionsprozessen an Eisen mit spektroskopischen Methoden erfordert gut charakterisierte Standardsubstanzen. Es zeigte sich, daß die spektroskopische Charakterisierung allein nicht ausreicht, um Verunreinigungen in definierten Phasen zu erkennen. Deshalb wurden zusätzlich thermoanalytische Untersuchungsmethoden zur Auffindung von unreinen Substanzen und zur Optimierung der Präparationsmethoden angewandt. Es werden IR- und Ramanspektroskopische sowie thermoanalytische Daten von -, -, - und -FeOOH sowie eines amorphen Eisen(III) hydroxidsols berichtet.
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We gratefully acknowledge the financial support given by the Fonds zur Förderung der wissenschaftlichen Forschung of Austria. We also thank Prof. A. Otto (Düsseldorf) and Prof. H. Kuzmany (Wien) for measuring the Raman spectra; thanks are also due to Prof. R. Kellner (Wien) for his kind permission to use the FTIR equipment. |
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