Microemulsion Method Producing Tungsten Trioxide

Currently, producing tungsten trioxide methods are many, such as hydrothermal method, solid method, liquid phase method, sol-gel method and microemulsion method. Microemulsion method is a two incompatible liquid reaction with surfactant to form a uniform emulsion, precipitated solid phase from the emulsion, so you can make the nucleation, growth, coalescence, agglomeration and other processes confined to a tiny spherical droplets inside, thereby forming spherical particles, to avoid further agglomeration between particles. Producing tungsten trioxide by microemulsion method the process is as follows:
1. Weigh 0.200gCTAB added 8ml cyclohexane and 12ml n-butanol with fully stir.
2. The mixed solution was divided into 2 parts of divide into solution A and solution B, solution A was added in 6ml1: 1 hydrochloric acid solution, phacoemulsification 15min.
3. B was added sodium tungstate solution 3ml, phacoemulsification 15min.
4. Under magnetic stirring, hydrochloric acid was added dropwise to the emulsion in the sodium tungstate solution, until the solution was no longer yellow far deeper.
5. Stop stirring, aging 16h, the supernatant liquid was removed, dried over by anhydrous ethanol and distilled water were washed several times, then centrifuged, and then into an oven at 100 ℃ drying to obtain a precursor.
6. The precursor was placed in a muffle furnace burning three hours, to give a yellow powder.



Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.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 >