TY - JOUR
T1 - Thermal behavior and decomposition of cerium(III) butanoate, pentanoate and hexanoate salts upon heating in argon
AU - Grivel, Jean-Claude
AU - Suarez Guevara, Maria Josefina
AU - Yue, Zhao
AU - Tang, Xiao
AU - Pallewatta, Pallewatta G A P
AU - Bednarcik, J.
PY - 2017
Y1 - 2017
N2 - The thermal behavior and decomposition of Ce-butanoate monohydrate (Ce(C3H7CO2)3·H2O), Ce-pentanoate (Ce(C4H9CO2)3) and Ce-hexanoate (Ce(C5H11CO2)3) were studied in a flow of argon while heating at 5 °C/min.
By means of several techniques such as simultaneous TG-DTA, FTIR
evolved gas analysis, in-situ x-ray diffraction using a synchrotron
source and hot-stage microscopy, it was found that all three compounds
undergo melting transitions prior to decomposition and that
decomposition involves intermediate stages including at least a Ce2O(CnH2n+1CO2)4 intermediate (n = 3, 4 or 5 for Ce-butanoate, pentanoate or hexanoate respectively). The final decomposition product consists of CeO2, which is formed through a Ce-oxycarbonate. The Ce3+ → Ce4+ oxidation seems to proceed via Ce2O3
that first results from the decomposition of the oxycarbonate phase.
During the whole decomposition process, the evolved gas species consist
of CO2 and symmetrical ketones.
AB - The thermal behavior and decomposition of Ce-butanoate monohydrate (Ce(C3H7CO2)3·H2O), Ce-pentanoate (Ce(C4H9CO2)3) and Ce-hexanoate (Ce(C5H11CO2)3) were studied in a flow of argon while heating at 5 °C/min.
By means of several techniques such as simultaneous TG-DTA, FTIR
evolved gas analysis, in-situ x-ray diffraction using a synchrotron
source and hot-stage microscopy, it was found that all three compounds
undergo melting transitions prior to decomposition and that
decomposition involves intermediate stages including at least a Ce2O(CnH2n+1CO2)4 intermediate (n = 3, 4 or 5 for Ce-butanoate, pentanoate or hexanoate respectively). The final decomposition product consists of CeO2, which is formed through a Ce-oxycarbonate. The Ce3+ → Ce4+ oxidation seems to proceed via Ce2O3
that first results from the decomposition of the oxycarbonate phase.
During the whole decomposition process, the evolved gas species consist
of CO2 and symmetrical ketones.
KW - Cerium
KW - Butyrate
KW - Valerate
KW - Caproate
KW - Thermal decomposition
KW - CeO2
U2 - 10.1016/j.jaap.2017.06.022
DO - 10.1016/j.jaap.2017.06.022
M3 - Journal article
SN - 0165-2370
VL - 126
SP - 77
EP - 87
JO - Journal of Analytical and Applied Pyrolysis
JF - Journal of Analytical and Applied Pyrolysis
ER -