Preparation of Ruthenium trichloride directly from ruthenium-containing waste material Ruthenium trichloride is one of the most important compounds of ruthenium and is an important chemical raw material in the fields of heterogeneous catalysis, homogeneous catalysis, electroplating, coating and so on. A method of preparing [...]
In recent years, the methods of preparing ultrafine or nanometer WC powder mainly include: mechanical alloying, direct reduction carbonization, sol-gel, gas carbonization, fixed-bed chemical vapor method, plasma method, etc.
Mechanical alloying
Grahame, etc by mechanical alloying method, first the W powder mixes with C powder by [...]
In tungsten carbide, carbon atoms embedded in the gap of the tungsten metal lattice do not destroy the original metal lattice and form interstitial solid solution, so it is also called interstitial compound. Tungsten carbide can be prepared by heating a mixture of tungsten [...]
This technology provides a kind of fluorine in the production of potassium titanate recycling process of potassium fluosilicate, fluorine is obtained by hydrofluoric acid will react with titanium ore leaching of iron titanate slurry, solid-liquid separation are clarified the fluorine titanium acid leaching liquid [...]
Praseodymium metal (PR) material is one of the products of light rare earth metals. Because of its unique physical and chemical properties, it has been widely used in the fields of rare earth permanent magnets, hydrogen storage materials, non-ferrous metals and alloys, ignition alloys, [...]
Boron carbide is a kind of super-hard compound in nature. In normal state, its hardness is second only to diamond and cubic boron nitride, and it is hardest at high temperature (about 1000 degrees Celsius). At the same time, boron carbide is a kind [...]
Rhenium itself has no independent deposit, and is often dispersed in other non-ferrous ore bodies. It is mainly associated with molybdenite and mostly occurs in trace minerals such as molybdenum, copper, lead, zinc, platinum and niobium. Therefore, we should make full use of regional [...]
1.1 Direct nitriding
Aluminum nitride does not exist in nature. It is now prepared by direct nitriding of metallic aluminum powder or direct nitriding method after carbon thermal reduction of Al2O3. Its chemical reaction formula is:
2 al (s) + N2 (g) – > 2 aln [...]
Lithium titanate: the ill-fated first generation of quick-charge batteries
Under this background, micromacro enters the “quick charging stage”. “” in 2010, we launched the LpTO lithium titanate battery, officially launched the quick charge technology route and applied in chongqing bus.” ” “For the fixed line [...]
As the society attaches great importance to green and environmental protection, new electrochemical energy storage technologies are constantly updated. Lithium-ion batteries, due to their high energy density, high safety, light weight and long life, occupy a large market share in electrochemical energy storage technologies, [...]
