亚洲欧洲日韩一区二区三区_亚洲成人无码网站在线观看_国产欧美日韩四季色欲_kk久精品毛片A级蜜桃_国产sm一区二区视频_亚洲AV偷窥自拍_含羞草视频下载污_中文字幕精品亚洲字幕资源网_欧美手机午夜久久网_正在播放美乳高潮在线

Here is a filter unit for ammonium metatungstate concentrated solution. It is reported that impurities will exist in the ammonium metatungstate solution, affecting the quality of the AMT solution and ultimately the quality of the prepared AMT powder. However, the existing filter unit for ammonium metatungstate concentrated solution has the problems of low filtration efficiency, easy leakage during storage and inconvenience to clean up the leaked ammonium metatungstate solution. Therefore, it is very necessary to invent a multidingal AMT concentrated…

How to prepare ammonium metatungstate? The researchers have proposed a preparation method of ammonium metatungstate – mainly used as a catalyst for petroleum cracking. More details, please visit: http://www.ammonium-metatungstate.com/index.html A Preparation Method of Ammonium Metatungstate Step One: Dissociation. 100kg of APT is heated and calcined in the rotary furnace at a temperature of 180°C for 50 min to prepare a dissociated material. At the same time, the inlet of the rotary furnace was fed with rare gas helium gas, the…

Ammonium metatungstate (AMT) is one of the most important raw materials and precursors for preparing tungsten carbide catalyst. The physical and chemical properties of AMT affect the structure and performance of the prepared tungsten carbide (WC). The particle size and structure of the precursor will have a greater impact on the later reduction carbonization process, which in turn will affect the catalytic activity of the tungsten carbide catalyst, according to the researchers. More details, please visit: http://www.ammonium-metatungstate.com/index.html Therefore, spray drying…

Ammonium metatungstate can be used to prepare high specific surface area porous ceramic catalyst, together with ammonium metavanadate, cerium nitrate and palladium acetate, as active components. The researchers proposed a method for preparing a porous honeycomb ceramic catalyst with high specific surface area, by mixing, aging, kneading, forming, drying and calcining. More details, please visit: http://www.ammonium-metatungstate.com/index.html A Preparation Method of Porous Ceramic Catalyst Step One: Prepare active ingredients. Add 60kg of water and 12kg of monoethanolamine to the dissolution tank…

Ammonium metatungstate (AMT) can be used as an active component to prepare a high specific surface area porous honeycomb ceramic catalyst, so that the catalyst can better adapt to application conditions such as frequent temperature changes, high nitrogen oxide concentration, high thermal stability, and high surface area. More details, please visit: http://www.ammonium-metatungstate.com/index.html A Preparation Method of Porous Honeycomb Ceramic Catalyst Using titanium dioxide, montmorillonite and alpha alumina as the carrier, ammonium metatungstate, ammonium metavanadate, cerium nitrate and palladium acetate as…

The researchers have proposed a preparation method of ammonium metatungstate. And the ammonium metatungstate (AMT) prepared by this method can be used as a catalyst for petroleum cracking. More details, please visit: http://www.ammonium-metatungstate.com/index.html A Preparation Method of Ammonium Metatungstate Step One: Dissociation. APT is heated and calcined in the rotary furnace at a temperature of 180-220 °C for 50-70 min to prepare a dissociated material. Step Two: Leaching. Send the dissociated material to the reaction kettle, add 1-4 mol/L of…

Ammonium metatungstate is a white crystalline salt with the chemical formula of AMT. It is described as the most important raw material for all other tungsten products, so its preparation is of great significance. At present, there are many preparation methods of ammonium metatungstate. And it can be divided into two main preparation methods, i.e., solid phase conversion method and liquid phase conversion method. More details, please visit: http://www.ammonium-metatungstate.com/index.html Ammonium Metatungstate Preparation A solid phase conversion method, such as using…

Ammonium metatungstate decomposition temperature varies with the degree of completion of the decomposition reaction. This also means that ammonium metatungstate will produce different products at different decomposition temperatures. More details, please visit: http://www.ammonium-metatungstate.com/index.html Decomposition Temperature and Decomposition Products of Ammonium Metatungstate 1. When the heat treatment temperature is 200-300 °C, all crystal water and most of the ammonium ions are removed; 2. A phase transition occurs at a temperature of 300-350 °C to generate metastable tungsten oxide; 3. When the…

Ammonium metatungstate (AMT) is a white crystal powder or yellowish crystal powder with good water solubility, which can be used for preparation of diesel hydrogenation catalyst. For example, the researchers have proposed a method for preparing FCC diesel hydrorefining catalyst by using ammonium metatungstate as an active component. More details, please visit: http://www.ammonium-metatungstate.com/index.html Preparation of Diesel Hydrogenation Catalyst with Ammonium Metatungstate Mix aluminum hydroxide dry glue, binder, squeeze aid and deionized water, and knead 3 times to squeeze into 1.5…

How to prepare ammonium metatungstate crystal? Or how to prepare AMT crystal? There are various preparation methods, such as thermal decomposition method, neutralization method, solvent extraction method, tungstic acid method, ion exchange method, etc. More details, please visit: http://www.ammonium-metatungstate.com/index.html Preparation of Ammonium Metatungstate Crystal by Thermal Decomposition Mix ammonium paratungstate (APT) and a small amount of citric acid catalyst fully, put into a far-infrared rotary furnace to decompose at the temperature of 200-280 °C for about 1 h. Some ammonia…