Blue Tungsten Oxide Price on Jan. 9th, 2017
- Category: Tungsten Oxide/Trioxide Price
- Published on 09 January 2017
- Hits: 2145
Blue tungsten oxide price with purity over 99.90% from Chinatungsten Online is 35.60 USD/KG, by Chinatungsten FOB Xiamen, Jan. 9th, 2017.
| Tungsten Oxide Supplier: Chinatungsten Online www.tungsten-oxide.com |
Tel.: 86 592 5129696; Fax: 86 592 5129797;Email: |
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Ammonium Metatungstate Price on Jan. 9th, 2017
- Category: Ammonium Metatungstate
- Published on 09 January 2017
- Hits: 2279
Ammonium metatungstate price with purity over 91.40% from Chinatungsten Online is 35.60 USD/KG, by Chinatungsten FOB Xiamen, Jan. 9th, 2017.
| AMT Supplier: Chinatungsten Online ammonium-metatungstate.com |
Tel.: 86 592 5129696; Fax: 86 592 5129797;Email: |
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2017.01.06-Tungsten Copper Part Price
- Category: Tungsten Copper Price
- Published on 06 January 2017
- Hits: 1254
As reported by Chinatungsten Online, the current price of 75%W25%Cu tungsten copper part of Ø125mmxØ100mmxØ60mmx40mmx10mm is $160.00 per piece EXW Xiamen, China on JAN.6, 2017.
| Tungsten Copper Supplier: Chinatungsten Online tungsten-copper.com |
Tel.: 86 592 5129696; Fax: 86 592 5129797;Email: |
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2017.01.06-Tungsten Carbide Polished Button Price
- Category: Tungsten Carbide Price
- Published on 06 January 2017
- Hits: 1718
As reported by Chinatungsten Online, the current price of YG8C tungsten carbide polished button for Ø9.05mmx13mm is $0.58 per piece EXW Xiamen, China on JAN.6, 2017.
| Tungsten Carbide Supplier: Chinatungsten Online tungsten-carbide.com.cn |
Tel.: 86 592 5129696; Fax: 86 592 5129797;Email: |
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Ammonium Metatungstate Preparing Composite Cobalt - Tungsten Oxide Powder
- Category: Ammonium Metatungstate
- Published on 04 January 2017
- Hits: 2352
Composite cobalt - tungsten oxide powder is the main raw material for manufacturing cemented carbide powder, the finished product cemented carbide has been widely used in machinery manufacturing, oil exploration, military industry, aerospace and other fields because of its high hardness and density, wear-resisting and other special performance.
Common methods for manufacturing composite cobalt - tungsten oxide powder by using the ammonium metatungstate (AMT) or metatungstate as raw material are like following:
Ammonium Metatungstate Catalytic Synthesis of Guaiacol
- Category: Ammonium Metatungstate
- Published on 04 January 2017
- Hits: 2247
Guaiacol, also known as adjacent hydroxyl benzoic ether or adjacent methoxy phenol, is the important fine chemical intermediate in spices, medicine, agriculture and dye and other industries, with its main utilizations as following:
1. Mainly used for the synthesis of vanillin, a rare type of broad spectrum of high-grade spice, the spices additive;
2. In the pharmaceutical industry, guaiacol is the intermediate of the expectorant cough medicine of potassium guaiacol sulfonate, and also the good fungicide;
3. It can be used as antioxidant to be applied in polymerization and food industry, and also can be used to determine copper, hydrocyanic acid and nitrite;
4. In the agriculture, 5 - nitro guaiacol sodium, which is formed through the steps of acetylation, nitration and hydrolysis from the raw material of guaiacol, is a kind of high efficient plant growth regulator that can quickly penetrate into the plant and promote the germination, striking root, growth, and bearing fruit of plant.
Most of guaiacol productions are through chemical synthesis method, while the traditional production process exist serious environmental pollution, large cost and many useless by-products and other shortcomings. Therefore, the development and utilization of non-toxic, harmless and pollution-free production process of environmental friendly catalyst is the inevitable developing trend of chemical process in the future.
Studies have pointed out one kind of supported solid catalyst with the active component of ammonium metatungstate (AMT) to catalyze alkylation reaction (which is also called as catechol with methanol gas solid phase alkylation reaction) of gasified catechol and methanol, and thereby to synthesize guaiacol. The properties of this production process are as follows:
1. The solid catalyst is taking tungsten ad active center, and the loading weight may be 5 ~ 15% of the total mass;
2. The catalytic reaction temperature is 533~573 k;
3. The molar ratio of catechol and methanol is 1:5;
4. The preparation of the catalyst is using the traditional impregnation method, which is impregnating the 40 ~ 60 sieves of established silica particles in a certain amount of ammonium metatungstate aqueous solution for some time, then drying, and roasting under 533~773 k for 3 hours to finally get ammonium metatungstate catalyst;
5. The production process with low production cost, low toxic and corrosive of raw materials and catalyst, little environment pollution.
| AMT Supplier: Chinatungsten Online ammonium-metatungstate.com |
Tel.: 86 592 5129696; Fax: 86 592 5129797;Email: |
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Ammonium Metatungstate Preparing Tungsten Nitride
- Category: Ammonium Metatungstate
- Published on 30 December 2016
- Hits: 2287
Tungsten nitride is a kind of new catalytic material, which shows an excellent performance in hydrogenated desulfurization and denitrification; also, it can not only prevent the sulfur pollution caused by industrial catalyst presulfurization, but also have high selectivity in the hydrogenolysis of heteroatomic ring. 2016.12.28-Tungsten Carbide Tiles Price
- Category: Tungsten Carbide Price
- Published on 28 December 2016
- Hits: 1655
As reported by Chinatungsten Online, the current price of YG11C tungsten carbide tiles for 40mmx15mmx4mm is $1.65 per piece EXW Xiamen, China on DEC.28, 2016.
| Tungsten Carbide Supplier: Chinatungsten Online tungsten-carbide.com.cn |
Tel.: 86 592 5129696; Fax: 86 592 5129797;Email: |
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2016.12.28-Tungsten Copper Rod Price
- Category: Tungsten Copper Price
- Published on 28 December 2016
- Hits: 1533
As reported by Chinatungsten Online, the current price of 75%W25%Cu tungsten copper rod of Ø8mmx200mm is $10.70 per piece EXW Xiamen, China on DEC.28, 2016.
| Tungsten Copper Supplier: Chinatungsten Online tungsten-copper.com |
Tel.: 86 592 5129696; Fax: 86 592 5129797;Email: |
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Ø2.4x150.0mm Thoriated Tungsten Electrode Price on Dec. 28, 2016
- Category: Tungsten Electrodes Price
- Published on 28 December 2016
- Hits: 1928
WT20 thoriated tungsten electrode price with Ø2.4x150.0mm is 0.6875USD/pc, EXW XIAMEN, CHINA, Dec. 28, 2016.
The MOQ for this diameter under such price is 5,000pcs.
| Tungsten Metals Supplier: Chinatungsten Online www.tungsten.com.cn |
Tel.: 86 592 5129696; Fax: 86 592 5129797;Email: |
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