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Monoalkyl Phosphate Preparation by Cesium Phosphotungstate

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Monoalkyl phosphate is an important surfactant, widely used in chemical fiber, textile, leather, plastics, paper making and cosmetics.  Monoalkyl phosphate usually synthesized by the esterification of phosphoric acid with aliphatic alcohols by esterification. The commonly used phosphorus agents are three oxychloride (POCl 3 ) and phosphoric acid. When phosphorus oxychloride is used as an agent for HCL, it is easy to cause environmental pollution, when phosphoric acid is used as a phosphate agent, although it is environmentally friendly, it is difficult to synthesize monoester, diester and three ester because of the low activity of phosphoric acid. Is there a way to improve the activity of phosphoric acid to help balance the benefits of the environment? Cesium phosphotungstate is a kind of heteropoly acid. It is a new type of multifunctional catalyst. It has not only oxidation reduction property, but also high catalytic activity and good stability, it can be used fo...

The PK Between Tungsten Trioxide and Titanium Dioxide Photocatalytic Performance

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Photocatalysis is a photochemical reaction in the presence of a catalyst, it is a new science and technology. Common photocatalysts include metal oxides (TiO 2 , ZnO, Fe 2 O 3 , Bi 2 O 3 , WO 3 ) and metal sulfides (CdS, MoS 2 , MoSe 2 ). Titanium dioxide TiO 2  is the most white thing in the world, 1 grams of titanium dioxide can paint more than 450 square centimeter area to white. So it's the best paint for making white oil paint. The most well-known is that semiconductor photocatalysis performance of TiO 2 . TiO 2  photocatalysis is widely used because of its high activity, photochemical stability, non-toxic and cheap. Tungsten trioxide TiO 2  is a kind of tungsten compounds that are widely used, It can be used not only for hard alloys, but also for dyes, the most commendable thing is that tungsten trioxide also with excellent photocatalytic performance. Like TiO 2 , WO 3  also has high activity, photochemical stability, non-toxic and so on. If you com...

Cesium Tungsten Bronze

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Cesium tungsten bronze (Cs x WO 3 ) is synthesized by solid phase method or liquid phase method with cesium carbonate and sodium tungstate as raw materials. Cesium tungsten bronze is also called cesium tungstate.  Cs x WO 3  is a non stoichiometric functional compound with a special structure of oxygen eight surface, with low resistivity and low temperature superconducting properties. But in recent years, cesium tungsten bronze is popular for its excellent UV and near infrared shielding performance, with high efficiency, insulation and light reflection effect, this makes it good in the manufacture of special glass, high-end insulation film and LCD screen manufacturing. In recent years, with the increasing popularity of cesium tungsten bronze, more and more scholars have begun to discuss the liquid phase preparation of cesium tungsten bronze. Some scholars have adopted the hydrothermal method to obtain cesium tungsten bronze, sodium tungstate and cesium carbonate were ...

【Know Tungsten】Sodium Tungstate Applications

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Sodium tungstate , Na 2 WO4•2H 2 O, a tungstate of sodium, is useful as a source of tungsten. It is prepared from tungsten ores to manufacture tungsten by reducing it. It is often found as dihydrate. If you have any inquiry of  tungsten , please feel free to contact us: Email:  sales@chinatungsten.com / sales@xiamentungsten.com Tel.: +86 592 5129696/+86 592 5129595 Fax: +86 592 5129797 Scan QR code of Chinatungsten Wechat platform to follow up the daily latest price and market of tungsten, molybdenum and rare earth.

Adipic Acid Catalyzed Preparation by Tungstic Acid

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Adipic acid is mainly used for nylon 66 engineering plastics and raw materials, and in the production of various ester products. Adipic acid is also used for polyurethane elastomer material, acidifier various foods and beverages, sometimes its better than citric acid and tartaric acid. Adipic acid has many functions and a huge demand, but it is a big polluter. The industrial process mainly uses nitric acid to oxidize cyclohexanol and cyclohexanone (KA oil). The method has high yield, but nitric acid seriously damages the equipment and produces a large amount of nitrogen oxides which pollute the environment seriously. With the improvement of human environmental protection consciousness, people urgently need to find environmental protection and pollution-free solutions to solve the problem of adipic acid production. In recent years, Cao Fabin, a scholar, has proposed that adipic acid is used as catalyst to synthesize adipic acid, according to previous experience, he uses tun...

Why Sodium Silicate Is The Most Common Inhibitor of Scheelite Flotation

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There are many inhibitors of scheelite flotation, but the most popular and widely used is sodium silicate , which is recognized by industry as the most effective and cost effective inhibitor. Sodium silicate , commonly known as water glass , the molecular formula Na 2 SiO 3  is a water-soluble silicate, is a kind of mineral binder, non-sulfide ore, especially a typical inhibitor of silicate minerals. Sodium silicate is selected in the floating scheelite and playing two main functions: one is to make the silica gel modified by physical adsorption on mineral surface, two is the adsorption of SiO 3 2- , HSiO 3 - , OH -  and H +  on the surface of quartz and silicate minerals, which increases the electronegativity and hydrophilicity of the mineral surface. In scheelite flotation process, sodium silicate was inhibited in quartz, calcite and silicate, generally speaking, sodium silicate is selective when used in low dosage, but using too much will lose the selecti...

Nano Cesium Tungsten Bronze Preparation by Solvothermal Method

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Cesium tungsten bronze (Cs x WO 3 ) is synthesized by solid phase method or liquid phase method with cesium carbonate and sodium tungstate as raw materials. Therefore, cesium tungsten bronze is also called cesium tungstate. Cesium tungsten bronze Cs x WO 3  has the function of oxygen compounds in eight face special structure, with low resistivity and low temperature superconducting propertiesaterials. It mainly used to make high-temperature insulation coating, building glass, Low-E glass, automobile insulation film, plant planting shed, LCD screen and so on. Synthetic of cesium tungsten bronze can be obtained by solid phase method and liquid phase method. In the earlier period, most of cesium tungsten bronze was prepared by solid phase synthesis, such as vapor phase reduction and hydrogen reduction, but the synthesis of solid phase is difficult and the cost is too high. Therefore, with the increasing attention of cesium tungsten bronze, more and more scholars began to stu...