Thermal studies of solid 2-methoxybenzylidenepyruvate of lighter trivalent lanthanides


Autoria(s): Ionashiro, E. Y.; Fertonani, F. L.; Melios, C. B.; Ionashiro, Massao
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

27/05/2014

27/05/2014

18/05/2005

Resumo

Solid-state compounds with a general formula of LnL3· nH2O, where Ln stands for lighter trivalent lanthanides (lanthanum to samarium), L is 2-methoxybenzylidenepyruvate and n=1.5, 2, 2, 1.5 and 2, respectively, have been synthesized. On heating these compounds are decompose in two or three steps. They lose their hydration water in the first step and the thermal decomposition of the anhydrous compounds occurs with the formation of the respective oxide, CeO2, Pr6O11 and Ln 2O3 (Ln=La, Nd, Sm) as final residue. The dehydration enthalpies found for these compounds (La to Sm) were: 222.7, 163.6, 497.7, 513.9 and 715.4 kJ mol-1, respectively. © 2005 Akadémiai Kiadó, Budapest.

Formato

299-303

Identificador

http://dx.doi.org/10.1007/s10973-005-0053-7

Journal of Thermal Analysis and Calorimetry, v. 79, n. 2, p. 299-303, 2005.

1388-6150

http://hdl.handle.net/11449/68236

10.1007/s10973-005-0053-7

WOS:000227155700013

2-s2.0-18244375849

Idioma(s)

eng

Relação

Journal of Thermal Analysis and Calorimetry

Direitos

closedAccess

Palavras-Chave #2-methoxybenzylidenepyruvate #Lighter lanthanides #Thermal behaviour #Dehydration #Enthalpy #Rare earth elements #Synthesis (chemical) #Thermoanalysis #Thermodynamic stability #Dehydration enthalpies #Thermal behavior #Aldehydes
Tipo

info:eu-repo/semantics/conferencePaper