Thermal decomposition of rare earth element suberates in air atmosphere

Abstract

The condition of thermal decomposition of La, Ce(III), Pr(III), Nd, Sm, Eu(III), Gd, Th, Dy, Ho, Er, Tin, Yb and Lu suberates were studied. Complexes of rare earth elements of suberic acid (CH2)6(COOH)2 are little known. Ryabchikov and Terentyeva [1] have prepared rare earth suberates as solids sparingly soluble in water. Brzyska and Hubicki [2] have determined solubility of La, Ce(III), Pr, Nd and Sm suberates in water and used fractional precipitation of suberates for their separation. The yttrium suberate was prepared as hexahydrate, its IR and X spectra were recorded and thermal decomposition was studied [3]. Thermal decomposition of other rare earth element suberates have not been studied.As a continuation of our work on the thermal decomposition of rare earth carboxylates [4][5][6], we now report the thermal decomposition of the La and lanthanide suberates in air atmosphere. ExperimentalThe suberates of La and lanthanide from Ce(III) to Lu (except Pro) were prepared by adding equivalent amounts of a 0.1 M solution of ammonium suberate (pH 5.5) to a hot solution of rare earth element chlorides John Wiley & Sons, Limited, Chiche.s~ ~iraad6,