%0 Journal Article
%T Synthesis of the SrFeO2.5 and BaFeO3-x perovskites by thermal decomposition of SrNH4[Fe(CN)6] 3H2O and BaNH4[Fe(CN)6]
%A C¨®rdoba
%A Lucrecia M.
%A G¨®mez
%A Mar¨ªa In¨¦s
%A de Mor¨¢n
%A Juana A.
%A Aymonino
%A Pedro J.
%J The Journal of Argentine Chemical Society
%D 2008
%I Scientific Electronic Library Online
%X in the present work the synthesis, physicochemical characterization and thermoanalytical results of srnh4[fe(cn)6]3h2o y banh4[fe(cn)6] are described. the thermal decompositions in oxygen atmosphere for both salts are carried out in the stages that lead to the formation of mixed oxides, i. e., srfeo2.5 and bafeo3-x at 1173 k. barium carbonate is also obtained in the residue in the case of the decomposition of the barium complex. the total weight loss are 49,95% and 35,45 % for the strontium and barium salts, respectively. a decomposition mechanism is suggested for the pyrolisis processes from the data provided by ir spectroscopy, x-ray powder diffraction and chemical analysis. the specific surface area of the obtained oxides is also determined in order to evaluate its eventual catalytic activity.
%K thermal decomposition
%K hexacyanoferrates (iii)
%K perovskites
%K thermoanalytical studies.
%U http://www.scielo.org.ar/scielo.php?script=sci_abstract&pid=S1852-14282008000100001&lng=en&nrm=iso&tlng=en