Articles

Electrocatalyst based on nano niobium dioxide for nitrogen reduction

Ammonia is the largest chemical product produced on earth, with an annual production of more than 150 million tons, and has been synthesized by the Haber-Bosch process for more than 100 years. However, the Haber-Bosch process uses hydrogen derived from natural gas reforming to reduce nitrogen under high temperature and pressure, so it is a process with high energy consumption and CO2 emission. However, the electrochemical nitrogen reduction reaction (NRR), which directly uses water and nitrogen as raw materials [...]

Introduction to the properties and applications of nano boron nitride (BN)

Boron nitride, chemical formula BN, a non-oxide material, is the isoelectronic body of carbon (C2), its crystal structure is similar to graphite, is currently one of the more studied and applied nitride ceramic materials. According to the crystal structure type, BN mainly includes hexagonal boron nitride (H-BN), cubic boron nitride (C-BN), rhombic boron nitride (R-BN), wurtzite boron nitride (W-BN). What are the properties of boron nitride? As a structural analogue of graphite, BN has better physical and chemical properties than [...]

Dysprosium oxide main applications

Dysprosium oxide white crystalline powder with strong magnetic force 12.8 times that of ferric oxide. Relative density 7.81(27/4℃), melting point 2391℃. Dysprosium salt solution, insoluble in water, soluble in acid to form corresponding acid. Easy to absorb carbon dioxide from the air, into the basic dysprosium carbonate. Obtained by burning dysprosium hydroxide, dysprosium carbonate or dysprosium nitrate at 900℃. Used in electronics, radio and nuclear industries. Dysprosium oxide is a white powder that is slightly hygroscopic and can absorb water [...]

Preparation and synthesis of cesium carbonate

Cesium carbonate is an inorganic compound. White solid at room temperature and pressure. It is soluble in water and absorbs moisture quickly when exposed to air. Cesium carbonate aqueous solution is strongly alkaline and can react with acid to form the corresponding cesium salt and water, and release carbon dioxide. Cesium carbonate should be sealed, dried and kept separate from acid during storage. Preparation and synthesis: 1. Prepare sulfuric acid solution of cesium salt, add aluminum sulfate to it, and precipitate [...]

The main application of lithium iodide trihydrate

Lithium iodide is a colorless or white cubic crystal system. Easy deliquescence. It is known to have hydrates, halohydrates LiI·1/2H2O, monohydrates LiI·H2O, dihydrates LiI·2H2O, and trihydrates LiI·3H2O. These hydrates are usually stable (the liquid phase composition is the same as the composition of the compound when dissolved, and no decomposition occurs). Commercially available products are usually trihydrate. Lithium iodide (sanshui) : hexagonal crystal system, yellow crystal. The molecular mass is 187.89. Relative density 3.48. Melting point is 73 ℃. [...]

Sinomineral resources is an important supplier of Cesium iodide to Yirui Technology

Yirui Technology co., LTD is a digital X-ray detector manufacturer, which is guided by the technological development trend of the whole industrial chain and the technical level is in line with international standards. It is mainly engaged in the research and development, production, sales and service of digital X-ray detectors. Its products are widely used in medical diagnosis and treatment, industrial nondestructive testing, security inspection and other fields. Digital X-ray detector is a typical high-tech product, which belongs to the [...]

Practical application of nano nickel oxide

1. Nano nickel oxide used in catalyst: Nano-nio (VK-N10,VK-N30,VK-N150, wan King supply) is a good catalytic oxidation catalyst, Ni2+ has a 3D orbital, has the preferred adsorption tendency of multi-electron oxygen, also has the activation effect on other reducing gases, and the O2 of reducing gases play a catalytic role, in the decomposition synthesis of organic matter, transformation process, Such as gasoline hydrogenation cracking, is the petrochemical process of hydrocarbon conversion, heavy oil hydrogenation process, nano NiO is a good [...]

How to prepare blue tungsten?

Blue tungsten refers to a class of dark blue compounds containing mixed valence states of tungsten (ⅵ) and tungsten (V). It usually forms in solution. Preparation of pure tungsten compound using ammonium paratungstate, tungsten trioxide and sodium tungstate solution as raw materials. Blue tungsten refers to a class of dark blue compounds containing mixed valence states of tungsten (ⅵ) and tungsten (V). It usually forms in solution. Tungsten blue was obtained from suspension of tungsten oxide in hydrochloric acid by [...]

Why is silicon nitride ceramic substrate a world-class strategic product?

It is well known that the heat generated by the semiconductor devices work is the key factor that causes for the failure of semiconductor devices, and the thermal conductivity of the insulating substrate is the key to affect the whole semiconductor cooling device, in addition, due to the often face the complex mechanics environment such as turbulence, vibration, substrate material also need certain mechanical reliability, silicon nitride ceramic various aspects performance is balanced, It is a structural ceramic material [...]

Understanding, preparation and application of nanometer tungsten oxide

Tungsten trioxide, whose molecular formula is WO3 and molecular weight is 231.85. It is a kind of tungstic anhydride, tungstic acid products, tungsten oxide including tungsten trioxide and tungsten dioxide, there is no actual industrial production of tungsten dioxide products. According to the content of tungsten trioxide is divided into tungstate acid, sodium tungstate, calcium tungstate, ammonium paratungstate, ammonium metatungstate and other products. In the W-O system, there are WO3, WO 2.9, WO 2.72, WO2 and other tungsten oxides. WO3(yellow) — [...]