Add to ORKGAqueous suspensions, containing 0.2 M ammonium or sodium tungstate and different amounts of one of HC1, HNO3, or H2SO4, were subjected to aging at room temperature. The resulting products were examined by means of X-ray powder diffraction. The formation of 5(NH4)2O.12WO3.11H20 and hydrates of tungstic oxide takes place, depending mainly on the pH. The presence of sulfate was found to hinder the crystal growth of hydrates of tungstic oxide except for that of H2W04•H20
In situ Raman spectra of aqueous K2WO4-HCl, K2WO4-HCl-NaCl, and K2WO4-CO2-NaCl solutions were collec...
Single crystals of the tungsten (VI) oxide hydrate, Ba2WO5·H2O, were grown using a hydroxide hydrofl...
Aqueous sols of colloidal layered tetramethylammonium (TMA) tungstate nanocrystals were obtained by ...
This study is focused on the composition and the evolution of tungstate ions solutions as a function...
Production of W from scheelite mineral (CaWO4) by hydrometallurgical processes has grown up in the l...
Typical oxidation process of tungsten scraps was modified by the rotary kiln with oxygen burner to i...
Methylammonium paradodecatungstate, (CH3NH3)10[H2W12O42] ⋅ nH2O, was prepared by the reaction of WO3...
The temperature-dependent composition of suspension during citric acid mediated crystallization of t...
The sulfidation of crystalline m-WO3 and WO3•H2O and the thermal decomposition of (NH4)2WO2S2 to an ...
This paper presents the preparation of monoclinic WO3 by a one-step hydrothermal method. The effect ...
AbstractIn this work, we present the effects of mixing sequence of sodium tungstate and nitric acid,...
185-195Dissolution of tungsten(VI) oxide hydrate (WO3·H2O) in aqueous organic amine (RNH2 where R = ...
Ammonium telluro-venado-tungstate, 3(NH4)2O.TeO5. 2V2O5.2WO3.15H2O,has been synthesised and its comp...
In this study. it is aimed to treat scheelite concentrates obtained from Uludag, Bursa (Turkiye), an...
Complete wolframite conversion in sulfuric acid is significant for expanding the applicability of th...
In situ Raman spectra of aqueous K2WO4-HCl, K2WO4-HCl-NaCl, and K2WO4-CO2-NaCl solutions were collec...
Single crystals of the tungsten (VI) oxide hydrate, Ba2WO5·H2O, were grown using a hydroxide hydrofl...
Aqueous sols of colloidal layered tetramethylammonium (TMA) tungstate nanocrystals were obtained by ...
This study is focused on the composition and the evolution of tungstate ions solutions as a function...
Production of W from scheelite mineral (CaWO4) by hydrometallurgical processes has grown up in the l...
Typical oxidation process of tungsten scraps was modified by the rotary kiln with oxygen burner to i...
Methylammonium paradodecatungstate, (CH3NH3)10[H2W12O42] ⋅ nH2O, was prepared by the reaction of WO3...
The temperature-dependent composition of suspension during citric acid mediated crystallization of t...
The sulfidation of crystalline m-WO3 and WO3•H2O and the thermal decomposition of (NH4)2WO2S2 to an ...
This paper presents the preparation of monoclinic WO3 by a one-step hydrothermal method. The effect ...
AbstractIn this work, we present the effects of mixing sequence of sodium tungstate and nitric acid,...
185-195Dissolution of tungsten(VI) oxide hydrate (WO3·H2O) in aqueous organic amine (RNH2 where R = ...
Ammonium telluro-venado-tungstate, 3(NH4)2O.TeO5. 2V2O5.2WO3.15H2O,has been synthesised and its comp...
In this study. it is aimed to treat scheelite concentrates obtained from Uludag, Bursa (Turkiye), an...
Complete wolframite conversion in sulfuric acid is significant for expanding the applicability of th...
In situ Raman spectra of aqueous K2WO4-HCl, K2WO4-HCl-NaCl, and K2WO4-CO2-NaCl solutions were collec...
Single crystals of the tungsten (VI) oxide hydrate, Ba2WO5·H2O, were grown using a hydroxide hydrofl...
Aqueous sols of colloidal layered tetramethylammonium (TMA) tungstate nanocrystals were obtained by ...