Ammonium Metatungstate Classes and Usage
Ammonium metatungstate can be used as reagents for chemical analysis such as for chemical diagnosis; source material for the preparation of high purity tungsten trioxide used as a thin film substrate for certain semiconductor devices; high purity source material for research in tungsten chemistry; source material for DENOX catalysts industry; as a precursor to a variety of POM (polyoxometalates). Ammonium metatungstate applied in the manufacture of various petrochemical catalysts, It's the basic raw material of W-base catalyzer used in oil refinery.
It has different classes listed as below:
|
Class |
AMT-1 |
AMT-2 |
|
WO3(%) |
≥88 |
≥84 |
|
Water Solubility |
300g/100ml |
|
|
Fe |
0.002 |
0.005 |
|
Si |
0.002 |
0.006 |
|
Mo |
0.01 |
0.03 |
|
Cu |
0.001 |
0.001 |
|
M |
0.001 |
0.001 |
|
Mg |
0.001 |
0.001 |
|
Sn |
0.0001 |
0.002 |
Ammonium metatungstate is a source of high purity, water soluble tungsten which is essentially free of alkali and other metallic impurities. Ammonium metatungstate is very versatile and can be used as catalysts, capacitors, nuclear shielding, flame retardants, corrosion inhibitors raw materials, but also excellent raw materials in the preparation of ultra fine tungsten powder, tungsten heavy alloy powder, phosphotungstic acid, arsenic acid, silicon tungstate.
Its usage also includes being as a raw material for the production of tungsten catalysts for a variety of reactions including oxidation, hydroxylation, hydrogenation, and polymerization. Suitable carriers can be impregnated with alkali-free solutions of tungsten and processed to remove the water and ammonia. Such catalysts are used by the petrochemical industry.
Other usage includes: reagents for chemical analysis such as for chemical diagnosis; source material for the preparation of high purity tungsten trioxide used as a thin film substrate for certain semiconductor devices; high purity source material for research in tungsten chemistry; source material for DENOX catalysts industry; as a precursor to a variety of POM (polyoxometalates).
AMT Supplier : Chinatungsten Online - http://ammonium-metatungstate.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
More details of the above news and/or products, please visit Chinatungsten Online, or contact us directly.
Disclaimer: The article is only reflecting the opinions of the author. We have no responsibility to prove the originality and authenticity of the content, words and/or pictures. You readers should just take it as reference and check the details by yourselves. And the content is not a suggestion for investment decision. The investor takes his or her own risks if he or she operates accordingly. If you have any dissent about the contents above, please contact the relevant author, or the webmaster. We will try our best to assist the dealing of the related issues. Thanks for your visit and cooperation.
|
