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Cleaner production of ammonium paratungstate by membrane electrolysis-precipitation of sodium tungstate solution
The production of ammonium paratungstate (APT) is riddled with the generation of wastewater, which causes environmental problems. To solve the...
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Electrochemical Processing of the Wastes of Heavy Tungsten Alloys in Ammonium Carbonate Solutions
AbstractThe electrochemical behavior of tungsten and a VNZhK alloy (wt %: 90 W, 7.2 Ni, 1.8 Fe, 1 Co) in 0.5–1.5 M solutions of ammonium carbonate is...
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Microstructure and Luminescence Properties of Eu3+ Doped Tungsten Trioxide Nanoparticles Prepared by Hydrothermal Method
Tungsten oxide is widely used in the photolysis of water for hydrogen production, photocatalysis, photoelectric conversion, and electrochromism. Eu 3+ ...
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Efficient recovery of tungsten from scheelite concentrates using a sulfur-phosphorus mixed acid leaching system
In recent years, a new process for leaching scheelite concentrates with sulfur-phosphorus mixed acid has been successfully industrialized. This...
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Comprehensive recovery of W, V, and Ti from spent selective reduction catalysts
In this study, spent WO 3 /V 2 O 5 -TiO 2 catalysts used for selective catalytic reduction were treated by a hydrometallurgical process to comprehensively...
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Preparation and luminescence properties of WO3:Eu3+@SiO2 nanocomposites
WO 3 :Eu 3+ powder was prepared by microemulsion method with cetyltrimethyl ammonium bromide (CTAB) as a surfactant. The prepared WO 3 :Eu 3+ samples were...
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High-Density Mo–W–Cu Pseudoalloys Based on Homogenous Mo–25% W Powder Alloy Produced by Reducing Oxide Powders in Moving Layers
The article aimed to obtain a structural material with increased plasticity and density of 98.5–99.5% based on (Mo–25% W)–20 vol.% Cu pseudoalloys...
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Effect of the Method of Introducing WO3 Nanoparticles into the Al–Si–Cu Melt on the Structure and Hardness of the Prepared Composite Material
AbstractThe structure and hardness of an aluminum-matrix Al–Si–Cu-based material reinforced with WO 3 nanoparticles via liquid phase mixing with a...
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Tungsten and arsenic substance flow analysis of a hydrometallurgical process for tungsten extracting from wolframite
In this study, the metabolism of a hydrometallurgical process for tungsten extracting from wolframite was studied through substance flow analysis....
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Obtaining Aluminum – Matrix Composite Materials Particulate-Reinforced with Ceramic Particles
Increased resistance to heat is an important requirement for the creation of promising materials and their products. This requirement is potentially...
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Production of Micro-sized Metallic Tungsten Particles from Natural Wolframite and Scheelite via Sulfide Chemistry
The development of sulfide-based chemistry and physical separationSeparation has opened the way for new industrial production methods. A new route...
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Correction to: Synthesis and Characterization of Nanoscale Tungsten Particles with Hollow Superstructure Using Spray Drying Combined with Calcination Process
In the article [1], the use of the formula (NH 4 ) 6 W 7 O 24 ·6H 2 O to represent the starting material ammonium paratungstate (APT) is outdated and incorrect.
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Electrical Conductivity of Tungsten-Containing Ammonia Solutions and Calculation of Its Activation Energy
Abstract —The activation energy of the electrical conductivity of ammonium hydroxide–tungstate ion solutions is determined in the NH 4 OH concentration...
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Preparation and optical properties of AgNWs/WO3:Eu3+ composite film
Nano-WO 3 :EU 3+ powder was prepared by Pechini method under acidic and alkaline condition, and the prepared acidic nano-WO 3 :Eu 3+ mixed with the silver...
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High Temperature Processing of Tungsten Slag
Tungsten is extraordinarily important for a broad range of industrial processes. It has the highest melting point of all metals (3410 °C) and a high...
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Electrochemical Processing of a Heavy W–Ni–Fe Alloy by Direct and Alternating Currents in Ammonia–Alkali Solutions
AbstractThe electrochemical behavior of a heavy tungsten alloy W–Ni–Fe ((wt %): 78.8 W, 15.2 Ni, 6.0 Fe) in solutions of sodium hydroxide (2–6 M) and...
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Production of Metallic Tungsten and Tungsten Carbide from Natural Wolframite and Scheelite via Sulfide Chemistry
The development of sulfide-based chemistry and physical separation in the last decade opens new processes to produce metals at the industrial scale....
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Ultrasonic disintegration of tungsten trioxide pseudomorphs after ammonium paratungstate as a route for stable aqueous sols of nanocrystalline WO3
A new facile method is proposed for the preparation of aqueous sols of highly crystalline tungsten trioxide with a particle size of 60–150 nm,...
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Hybrid WO3-nanorods/TiO2 photoanodes for improved dye-sensitized solar cells performances under back illumination
Anatase TiO 2 photoanodes were modified by hydrothermally synthesized WO 3 nanorods for dye-sensitized solar cell (DSSC) applications. Two different...
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Facile synthesis of tungsten nitride/carbide quantum dots supported on amorphous carbon for supercapacitor applications
Transition-metal nitrides/carbides are potential electrode materials for supercapacitor applications due to their intrinsic metallic conductivity,...
