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- W2143540112 abstract "Abstract Potassium tris(oxalato)lanthanum(III)nonahydrate, K 3 [La(III)(C 2 O 4 ) 3 ]·9H 2 O, has been synthesized and characterized by elemental analysis and IR spectral studies. Thermal studies (TG, DTG and DTA) in air showed that the anhydrous compound formed at ca. 192°C. The final end product at 1000°C was shown to be a mixture of La 2 O 3 , K 2 CO 3 , K 2 O, KLaO 2 and La 2 C 3 , through the formation of an intermediate mixture of K 2 C 2 O 4 and K[La(C 2 O 4 ) x ] (where 1.5 x 2 C 2 O 4 and La 2 O 2 CO 3 at ca. 528°C. DSC study in nitrogen upto 650°C showed that the end product was a mixture of K 2 C 2 O 4 and La 2 O 2 CO 3 . The kinetic parameters, mainly E * of the dehydration and decomposition steps in TG, were calculated using four non-mechanistic equations. The kinetic parameters, E * , Δ H , Δ S obtained from DSC study are discussed. Some of the decomposition products were identified by IR and X-ray powder diffraction studies. A tentative mechanism for the decomposition in air is proposed." @default.
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- W2143540112 date "1999-10-01" @default.
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- W2143540112 title "Synthesis, characterization and the thermal decomposition of potassium tris(oxalato)lanthanum(III)nonahydrate" @default.
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- W2143540112 doi "https://doi.org/10.1016/s0040-6031(99)00152-5" @default.
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