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Preparation and thermal behaviour of rare earth citrate hydrates

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Abstract

Nine rare earth citrate hydrates (RE(C6H5O7)·nH2O,RE=La, Nd, Sm) were prepared and characterized by chemical analysis, elementary analysis, thermal analysis and IR spectra. The thermal decomposition processes were studied by using TG-DTG and IR spectra techniques. Dehydration enthalpies and dehydration entropies of 3 neodymium and 3 samarium citrate hydrates were also determined by means of DSC.

Zusammenfassung

Es wurden neun Seltenerdenzitrathydrate (RE(C6H5O7)nH2O,RE=La, Nd, Sm) hergestellt und mittels chemischer Analyse, Elementaranalyse und IR-Spektren charakterisiert. Der Prozeß der thermischen Zersetzung wurde mittels TG-DTG und IR-Spektren untersucht. Mittels DSC wurden außerdem die Dehydratationsenthalpien und Dehydratationsentropien von 3 Neodym- und von 3 Samariumzitrathydraten bestimmt.

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Authors and Affiliations

  1. Thermochemical Research Laboratory, Northwest University, 710069, Xi'an, Shaanxi, P. R. China

    Shurong Wu

  2. Department of Chemistry, Northwest University, 710069, Xi'an, Shaanxi, P. R. China

    Zhuguo Chang, Kaiying Wang & Weimiao Xiong

Authors
  1. Shurong Wu
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  2. Zhuguo Chang
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  3. Kaiying Wang
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  4. Weimiao Xiong
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Wu, S., Chang, Z., Wang, K. et al. Preparation and thermal behaviour of rare earth citrate hydrates. Journal of Thermal Analysis 45, 199–206 (1995). https://doi.org/10.1007/BF02548680

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  • DOI: https://doi.org/10.1007/BF02548680

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