Mass spectrometric studies of lithium-containing oxides at high temperature |
| |
Authors: | Yasushi Ikeda Masayoshi Tamaki Genichi Matsumoto Kenji Amioka Tomoyasu Mizuno |
| |
Institution: | Department of Nuclear Engineering, Faculty of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464 Japan |
| |
Abstract: | The sublimation and vaporization of various lithium containing oxides have been studied by high temperature mass spectrometry. The installed Knudsen cell apparatus gave some useful information about the vapor species, appearance potentials, partial pressures and heats of reactions involved. The investigated oxides are Li2O, Li2O-Al2O3, Li2O-MoO2 and Li2O-SiO2 systems. This paper mainly presents the most recent data for the Li2O-SiO2 system. A relationship for the decomposition reaction of ortho-Li4SiO4 was deduced. The heat of the reaction was determined by the third law method.The activity of the Li2O component in the double oxides was estimated from the partial pressures of the vapor species. γ-LiAlO2 and meta-Li2SiO3 showed fairly low activities in comparison with Li2O oxide. The activity coefficients decreased with the Li2O mole fraction in the lithium compounds.The heats of formation and atomization of LiO and Li2O gaseous species were determined. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|