Tungsten Oxytetrafluoride synthesis

There are many ways for synthesis tungsten oxytetrafluoride, generally including the following four: the first method is through tungsten hexafluoride (WF6) primary hydrolysis to obtain tungsten oxytetrafluoride(WOF4);the second is using tungsten oxytetrachloride(WOCl4) react with hydrogen fluoride; third is through tungsten hexafluoride (WF6) react with tungsten trioxide to produce tungsten oxytetrafluoride; the fourth is after frit reaction between  tungsten trioxide and lithium fluoride to obtain tungsten oxytetrafluoride. Here introduce two ways for produce tungsten oxytetrafluoride which is the most widely used and processes are relatively simple.
(1) Put the fluorine gas into reactor where has tungsten trioxide powder with 230-400℃, after the reaction the gaseous WOF4 will be expelled from the reaction vessel, and condense in trap where the trap is heated to 130 ℃.
(2) First, mixing fluorine and oxygen, wherein the molar ratio is F2: O2 = 3: 1. Then pass into the tungsten powder, after reaction there will generate WOF4 also produce a small amount of tungsten hexafluoride. But tungsten hexafluoride is a volatile substance, so it can be got rid of at room temperature by vacuum method. Finally, use vacuum sublimation to produce WOF4 which is more pure.

Tungsten Manufacturer & Supplier: Chinatungsten Online -http://www.tungsten-powder.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn
 

• < Prev
• Next >