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Raman identification of H2CO in aqueous solutions

Authors

  • B. Hanoune,

    Corresponding author
    1. Physicochimie des Processus de Combustion et de l'Atmosphère, UMR 8522 CNRS—Université Lille 1, Bâtiment C11, Université Lille 1 Sciences et Technologies, F-59655 Villeneuve d'Ascq, France
    • Physicochimie des Processus de Combustion et de l'Atmosphère, UMR 8522 CNRS—Université Lille 1, Bâtiment C11, Université Lille 1 Sciences et Technologies, F-59655 Villeneuve d'Ascq, France.
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  • L. Paccou,

    1. Unité Matériaux et Transformations, UMR CNRS 8207, Université Lille 1 Sciences et Technologies, F-59655 Villeneuve d'Ascq, France
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  • P. Delcroix,

    1. Physicochimie des Processus de Combustion et de l'Atmosphère, UMR 8522 CNRS—Université Lille 1, Bâtiment C11, Université Lille 1 Sciences et Technologies, F-59655 Villeneuve d'Ascq, France
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  • Y. Guinet

    1. Unité Matériaux et Transformations, UMR CNRS 8207, Université Lille 1 Sciences et Technologies, F-59655 Villeneuve d'Ascq, France
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Abstract

Aqueous formaldehyde solutions of mole fraction from 0.05 to 0.20 were studied by Raman spectroscopy at temperatures up to 180 °C. The previously unreported Raman spectrum of formaldehyde under its non-hydrated form H2CO has been identified, in addition to the already known bands from methanediol CH2(OH)2 and poly(oxymethylene)glycols HO(CH2O)nH formed by hydration and subsequent polymerization of the formaldehyde molecules. The experimental spectrum of formaldehyde in solutions agrees perfectly with the theoretical calculations. Copyright © 2010 John Wiley & Sons, Ltd.

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