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Mechanism of dehydration and condensation of CuHPO4· H2O

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Abstract

The dehydration of CuHPO4·H2O was followed by means of thermogravimetric measurements under quasi-isothermal-quasi-isobaric conditions. The intermediates and products formed during The thermal analysis and during the calcination of the starting hydrogen phosphate in an electric furnace at various temperatures were analysed by means of thin-layer chromatography, IR spectroscopy, X-ray diffraction analysis and electron microscopy.

Zusammenfassung

Mittels thermogravimetrische Messungen wurde die Dehydration von CuHPO4·H2O unter quasiisothermen-quasiisobaren Bedingungen untersucht. Die bei der Thermoanalyse und dem Kalzinieren des ursprünglichen Hydrogenphosphates in einem elektrischen Ofen bei verschiedenen Temperaturen entstehenden Produkte und Zwischenprodukte wurde mit Hilfe von Dünnsichtchromatographie, IR-Spektroskopie, Röntgendiffraktion und Elektronenmikroskopie untersucht.

РЕжУМЕ

тЕРМОгРАВИМЕтРИЧЕс кИМ МЕтОДОМ В кВАжИИжОтЕРМИЧЕскИ х-кВАжИИжОБАРНых Усл ОВИьх БылА ИжУЧЕНА ДЕгИДРА тАцИь CuHPO4·H2O. МЕтОДАМИ тОНкОслОИНОИ хРОМАт ОгРАФИИ, Ик спЕктРОскОпИИ, РЕНтг ЕНОФАжОВОгО АНАлИжА И ЁлЕктРОННОИ МИкРОск ОпИИ ИжУЧЕНы пРОМЕжУ тОЧНыЕ И кОНЕЧНыЕ пРОДУкты, О БРАжУУЩИЕсь В пРОцЕс сЕ тЕРМИЧЕскОгО АНАлИж А, А тАкжЕ пРИ ОБжИгЕ ИсхОДНОгО гИДРОФОсФ АтА В ЁлЕктРИЧЕскОИ п ЕЧИ пРИ РАжлИЧНых тЕМпЕРАтУ РАх.

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Authors and Affiliations

  1. Institute of Chemical Technology, Pardubice, Czechoslovakia

    D. Brandová & M. Trojan

  2. Institute for General and Analytical Chemistry, Technical University, and Research Group for Technical Chemical Analysis of the Hungarian Academy of Sciences, Budapest, Hungary

    M. Arnold, F. Paulik & J. Paulik

Authors
  1. D. Brandová
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  2. M. Trojan
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  3. M. Arnold
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  4. F. Paulik
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  5. J. Paulik
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Additional information

The authors thank Prof. E. Pungor for valuable discussions.

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Brandová, D., Trojan, M., Arnold, M. et al. Mechanism of dehydration and condensation of CuHPO4· H2O. Journal of Thermal Analysis 34, 1449–1454 (1988). https://doi.org/10.1007/BF01914369

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