Thermal decomposition of lutetium propionate |
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| Institution: | 1. Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India;2. Product Development Division, Bhabha Atomic Research Centre, Mumbai 400085, India;1. College of Physics and Electronic Engineering, Hengyang Normal University, Hengyang 421002, China;2. Hunan Key laboratory of Super Micro-structure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, China;3. Department of Physics, Key Laboratory for Low-Dimensional Structures and Quantum Manipulation (Ministry of Education), and Synergetic Innovation Center for Quantum Effects and Applications of Hunan, Hunan Normal University, Changsha 410081, China;4. College of Physics, Mechanical and Electrical Engineering, Jishou University, Jishou 416000, China;5. Department of Physics and Institute of Modern Physics, Hunan University of Science and Technology, Xiangtan 411201, China;1. Institute of Advanced Wear & Corrosion Resistance and Functional Materials, Jinan University, Guangzhou, 510632, PR China;2. International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka, 819-0395, Japan;1. Department of Bioorganic Chemistry, Wroclaw University of Economics and Business, 118/120 Komandorska Str., 53-345, Wrocław, Poland;2. Institute of Low Temperature and Structure Research, 2 Okólna Str., 50-422, Wrocław, Poland;3. Department of Physical and Quantum Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland;4. Institute of Physics, West-Pomeranian University of Technology, Al. Piastów 17, 70-311, Szczecin, Poland;5. Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, Rzeszów University of Technology, Al. Powstańców Warszawy 6, 35-959, Rzeszów, Poland |
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| Abstract: | The thermal decomposition of lutetium(III) propionate monohydrate (Lu(C2H5CO2)3·H2O) in argon was studied by means of thermogravimetry, differential thermal analysis, IR-spectroscopy and X-ray diffraction. Dehydration takes place around 90 °C. It is followed by the decomposition of the anhydrous propionate to Lu2O2CO3 with evolution of CO2 and 3-pentanone (C2H5COC2H5) between 300 °C and 400 °C. The further decomposition of Lu2O2CO3 to Lu2O3 is characterized by an intermediate constant mass plateau corresponding to a Lu2O2.5(CO3)0.5 overall composition and extending from approximately 550 °C to 720 °C. Full conversion to Lu2O3 is achieved at about 1000 °C. Whereas the temperatures and solid reaction products of the first two decomposition steps are similar to those previously reported for the thermal decomposition of lanthanum(III) propionate monohydrate, the final decomposition of the oxycarbonate to the rare-earth oxide proceeds in a different way, which is here reminiscent of the thermal decomposition path of Lu(C3H5O2)·2CO(NH2)2·2H2O. |
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