SPECTROTHERMAL INVESTIGATION OF THE DECOMPOSITION COURSE OF LANTHANUM ACETATE HYDRATE
作者： G. A. M. Hussein
DOI: 10.1007/BF02546919
关键词: Decomposition 、 Inorganic chemistry 、 Thermogravimetry 、 Anhydrous 、 Pyrolysis 、 Chemistry 、 Acetic acid 、 Hydrate 、 Lanthanum 、 Infrared spectroscopy
摘要: Thermogravimetry, differential thermal, X-ray diffraction and infrared spectroscopy analyses showed La(CH3COO)3·1.5H2O to decompose completely at 700°C yielding La2O3. The results revealed that the compound dehydrates in two steps 130 180°C, recrystallizes 210°C. Water thus produced hydrolyzes surface acetates (at 310°C), releasing acetic acid into gas phase. At 334°C, anhydrous acetate releases phase CH3COCH3 give La2(CO3)3 residue, which decomposes La2O2(CO3) via intermediate La2O(CO3)2. On further heating up 700°C, La2O3 is formed. IR of gaseous products indicated a chemical reactivity gas/solid interfaces formed throughout decomposition course. As result, was involved surface-mediated, bimolecular reaction, CH4 C4H8 (isobutene)
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