A thermogravimetric study of praseodymium(III), neodymium,samarium, gadolinium and holmium acetates,benzoates and abietates |
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Authors: | I S Shaplygin V P Komarov V B Lazarev |
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Institution: | (1) Kurkanov Institute of General and Inorganic Chemistry, Academy of Sciences, Moscow;(2) Department of Chemistry, Vsesouzny Zaochny Polytechnic Institute, Moscow, U S S R |
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Abstract: | The thermal decompositions of the acetates of Pr, Nd, Sm, Gd and Ho have been investigated using thermogravimetry and differential thermal analysis, together with infrared spectroscopy and X-ray diffraction. The thermal decompositions of the acetates of the rare earth elements exhibit several stages, depending upon both the number of crystal water molecules in the acetates and the rare earth element behaviour. Experiments with the benzoates and abietates of Pr, Nd, Sm, Gd and Ho indicate some correlations in the thermal decompositions of carboxylates of the rare earth elements.
Zusammenfassung Die thermische Zersetzung der Acetate von Pr, Nd, Sm, Gd und Ho wurde durch Thermogravimetrie und Differentialthermoanalyse in Verbindung mit der Infrarotspektroskopie und Röntgendiffraktionsmethode untersucht. Die thermische Zersetzung der Acetate der seltenen Erden verläuft in mehreren Stufen, welche sowohl von der Zahl der Kristallwassermoleküle in den Acetaten als auch von dem Verhalten der seltenen Erden abhängen. Experimente mit den Benzoaten und Abietaten von Pr, Nd, Sm, Gd und Ho zeigen gewisse Abhängigkeiten von der thermischen Zersetzung der Carboxylate der seltenen Erden.
Résumé La décomposition thermique des acétates de Pr, Nd, Sm, Gd et Ho a été étudiée par thermogravimétrie et analyse thermique différentielle ainsi que par spectroscopie infrarouge et diffraction des rayons X. La décomposition thermique des acétates de terres rares se produit en plusieurs étapes qui dépendent à la fois du nombre de molécules d'eau de cristallisation de l'acétate et du comportement de l'élément des terres rares considéré. Des expériences effectuées avec les benzoates et abiétates de Pr, Nd, Sm, Gd et Ho montrent que la décomposition thermique des carboxylates dépend des éléments de terres rares considérés.
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![acy](/content/m558t5t7wu308477/xxlarge1072.gif) ![tcy](/content/m558t5t7wu308477/xxlarge1090.gif) ![acy](/content/m558t5t7wu308477/xxlarge1072.gif) ![mcy](/content/m558t5t7wu308477/xxlarge1084.gif) ![rcy](/content/m558t5t7wu308477/xxlarge1088.gif) ![iecy](/content/m558t5t7wu308477/xxlarge1077.gif) ![zcy](/content/m558t5t7wu308477/xxlarge1079.gif) ![icy](/content/m558t5t7wu308477/xxlarge1080.gif) ![ncy](/content/m558t5t7wu308477/xxlarge1085.gif) ![acy](/content/m558t5t7wu308477/xxlarge1072.gif) ![tcy](/content/m558t5t7wu308477/xxlarge1090.gif) ![acy](/content/m558t5t7wu308477/xxlarge1072.gif) ![mcy](/content/m558t5t7wu308477/xxlarge1084.gif) Pr, Nd, Sm, Gd ![Ncy](/content/m558t5t7wu308477/xxlarge1053.gif) ![ucy](/content/m558t5t7wu308477/xxlarge1091.gif) ![acy](/content/m558t5t7wu308477/xxlarge1072.gif) ![zcy](/content/m558t5t7wu308477/xxlarge1079.gif) ![ycy](/content/m558t5t7wu308477/xxlarge1099.gif) ![vcy](/content/m558t5t7wu308477/xxlarge1074.gif) ![acy](/content/m558t5t7wu308477/xxlarge1072.gif) ![yucy](/content/m558t5t7wu308477/xxlarge1102.gif) ![ncy](/content/m558t5t7wu308477/xxlarge1085.gif) ![ncy](/content/m558t5t7wu308477/xxlarge1085.gif) ![iecy](/content/m558t5t7wu308477/xxlarge1077.gif) ![kcy](/content/m558t5t7wu308477/xxlarge1082.gif) ![ocy](/content/m558t5t7wu308477/xxlarge1086.gif) ![tcy](/content/m558t5t7wu308477/xxlarge1090.gif) ![ocy](/content/m558t5t7wu308477/xxlarge1086.gif) ![rcy](/content/m558t5t7wu308477/xxlarge1088.gif) ![ycy](/content/m558t5t7wu308477/xxlarge1099.gif) ![zcy](/content/m558t5t7wu308477/xxlarge1079.gif) ![acy](/content/m558t5t7wu308477/xxlarge1072.gif) ![vcy](/content/m558t5t7wu308477/xxlarge1074.gif) ![icy](/content/m558t5t7wu308477/xxlarge1080.gif) ![scy](/content/m558t5t7wu308477/xxlarge1089.gif) ![icy](/content/m558t5t7wu308477/xxlarge1080.gif) ![mcy](/content/m558t5t7wu308477/xxlarge1084.gif) ![ocy](/content/m558t5t7wu308477/xxlarge1086.gif) ![scy](/content/m558t5t7wu308477/xxlarge1089.gif) ![tcy](/content/m558t5t7wu308477/xxlarge1090.gif) ![tcy](/content/m558t5t7wu308477/xxlarge1090.gif) ![iecy](/content/m558t5t7wu308477/xxlarge1077.gif) ![rcy](/content/m558t5t7wu308477/xxlarge1088.gif) ![mcy](/content/m558t5t7wu308477/xxlarge1084.gif) ![icy](/content/m558t5t7wu308477/xxlarge1080.gif) ![chcy](/content/m558t5t7wu308477/xxlarge1095.gif) ![scy](/content/m558t5t7wu308477/xxlarge1089.gif) ![kcy](/content/m558t5t7wu308477/xxlarge1082.gif) ![ocy](/content/m558t5t7wu308477/xxlarge1086.gif) ![gcy](/content/m558t5t7wu308477/xxlarge1075.gif) ![rcy](/content/m558t5t7wu308477/xxlarge1088.gif) ![acy](/content/m558t5t7wu308477/xxlarge1072.gif) ![zcy](/content/m558t5t7wu308477/xxlarge1079.gif) ![lcy](/content/m558t5t7wu308477/xxlarge1083.gif) ![ocy](/content/m558t5t7wu308477/xxlarge1086.gif) ![zhcy](/content/m558t5t7wu308477/xxlarge1078.gif) ![iecy](/content/m558t5t7wu308477/xxlarge1077.gif) ![ncy](/content/m558t5t7wu308477/xxlarge1085.gif) ![icy](/content/m558t5t7wu308477/xxlarge1080.gif) ![kcy](/content/m558t5t7wu308477/xxlarge1082.gif) ![acy](/content/m558t5t7wu308477/xxlarge1072.gif) ![rcy](/content/m558t5t7wu308477/xxlarge1088.gif) ![bcy](/content/m558t5t7wu308477/xxlarge1073.gif) ![ocy](/content/m558t5t7wu308477/xxlarge1086.gif) ![kcy](/content/m558t5t7wu308477/xxlarge1082.gif) ![scy](/content/m558t5t7wu308477/xxlarge1089.gif) ![lcy](/content/m558t5t7wu308477/xxlarge1083.gif) ![acy](/content/m558t5t7wu308477/xxlarge1072.gif) ![tcy](/content/m558t5t7wu308477/xxlarge1090.gif) ![ocy](/content/m558t5t7wu308477/xxlarge1086.gif) ![rcy](/content/m558t5t7wu308477/xxlarge1088.gif) ![iecy](/content/m558t5t7wu308477/xxlarge1077.gif) ![dcy](/content/m558t5t7wu308477/xxlarge1076.gif) ![kcy](/content/m558t5t7wu308477/xxlarge1082.gif) ![ocy](/content/m558t5t7wu308477/xxlarge1086.gif) ![zcy](/content/m558t5t7wu308477/xxlarge1079.gif) ![iecy](/content/m558t5t7wu308477/xxlarge1077.gif) ![mcy](/content/m558t5t7wu308477/xxlarge1084.gif) ![iecy](/content/m558t5t7wu308477/xxlarge1077.gif) ![lcy](/content/m558t5t7wu308477/xxlarge1083.gif) ![softcy](/content/m558t5t7wu308477/xxlarge1100.gif) ![ncy](/content/m558t5t7wu308477/xxlarge1085.gif) ![ecy](/content/m558t5t7wu308477/xxlarge1101.gif) ![lcy](/content/m558t5t7wu308477/xxlarge1083.gif) ![iecy](/content/m558t5t7wu308477/xxlarge1077.gif) ![mcy](/content/m558t5t7wu308477/xxlarge1084.gif) ![iecy](/content/m558t5t7wu308477/xxlarge1077.gif) ![ncy](/content/m558t5t7wu308477/xxlarge1085.gif) ![tcy](/content/m558t5t7wu308477/xxlarge1090.gif) ![ocy](/content/m558t5t7wu308477/xxlarge1086.gif) .
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