Russian Journal of Inorganic Chemistry, Tập 8,Phần 2British Library Lending Division with the cooperation of the Royal Society of Chemistry, 1963 |
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... tantalum selenides in the TaSe2 - TaSe , region were of interest in this connection . EXPERIMENTAL The selenides were made by sintering tantalum powder ( Ta 99.3 , Nb 0.6 , Mo , W 0.1 % ) with 99.99 % selenium in evacuated quartz ...
... tantalum selenides in the TaSe2 - TaSe , region were of interest in this connection . EXPERIMENTAL The selenides were made by sintering tantalum powder ( Ta 99.3 , Nb 0.6 , Mo , W 0.1 % ) with 99.99 % selenium in evacuated quartz ...
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... tantalum and niobium is present as Ta ( OH ) and Nb ( OH ) , cations ( or TaO2 and NbO2 ) . Acidic solutions contain only insignificant quantities of more highly charged monomeric tantalum and niobium cations . Our results show that ...
... tantalum and niobium is present as Ta ( OH ) and Nb ( OH ) , cations ( or TaO2 and NbO2 ) . Acidic solutions contain only insignificant quantities of more highly charged monomeric tantalum and niobium cations . Our results show that ...
Trang 1206
of HF or HF and HCl tantalum forms the anion TaF.3 The formation of anionic species in an excess of HF has also been indicated during the separation of tantalum from other elements by ion exchange 4-11 and solvent extrac- tion 12-15 ...
of HF or HF and HCl tantalum forms the anion TaF.3 The formation of anionic species in an excess of HF has also been indicated during the separation of tantalum from other elements by ion exchange 4-11 and solvent extrac- tion 12-15 ...
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absorption Akad alkali metal alloys aluminium ammonia ammonium analysis anion aqueous solutions atoms beryllium binary calculated cations cerium Chem chemical Chemistry cm³ coefficient complex composition compounds concentration coprecipitation corresponding crystallisation crystals decomposition determined dissociation EDTA electrical conductivity endothermic endothermic effect equilibrium diagram eutectic experimental extraction formation formed g-ion germanium germanium dioxide glaserite H₂O hafnium hydrates hydride hydrogen hydrolysis hydroxide increase Inorg ions isotherm kcal Khim lattice ligand liquid lithium litre magnesium measured melting method mixture molar mole molecules Moscow Nauk SSSR Neorg niobium nitrate obtained oxide chloride peritectic potassium precipitate prepared ratio reaction refractive rhenium Russ salts shows sodium solid phase solid solutions solu solubility specimen stability constants structure studied sulphate Table tantalum temperature ternary thallium thermal thermograms thorium tion uranyl uranyl nitrate values vapour X-ray Zhur zinc zirconium