一.產(chǎn)品介紹 Product
Overview
產(chǎn)品名稱: 二氧化鎢
Product Name: 二氧化鎢
英文名稱: tungsten dioxide
English Name:
tungsten dioxide
生產(chǎn):上海在邦化工有限公司
Manufacturer: Shanghai ZBWM Chemical Engineering Pte. Ltd
品牌:“在邦”
Brand: ZAIBANG
分子式:WO2
Molecular
Formula: WO2
分子量: 215.85
Molecular
Mass: 215.85
二.產(chǎn)品性質(zhì) General Properties
1.棕色單斜晶系粉末狀晶體。密度10.9~11.1g/cm3。
1. Monoclinic brown powdery crystals. Density is 10.9 ~ 11.1g / cm3.
2. 熔點(diǎn)1500~1600℃。沸點(diǎn)1730℃;生成熱134千卡/mol,1050℃易揮發(fā)。
2. Melting point
of 1500~1600℃ and boiling point of沸點(diǎn)1730℃; generate 134
kcal / mol of heat and easily volatile at 1050℃.
3. 不溶于水、堿溶液、鹽酸和稀硫酸中。但溶于H2SO4,生成紅色鹽。易被硝酸氧化成高價氧化鎢。
3. Insoluble in water, alkali solution, hydrochloric acid and dilute
sulfuric acid. But soluble in H2SO4, to form a red salt. High nitrate is easily
oxidized to tungsten oxide.
4. 在惰性氣體中易歧化,生成金屬鎢和三氧化鎢。在N2氣流中加熱至1500~1600℃時熔融同時分解。在高溫時能被H2還原為金屬鎢。
4. Easy to disproportionation in an inert gas and form metal tungsten and
tungsten trioxide. There is simultaneous melting and decomposition when heating
in a stream of N2 up to 1500 ~ 1600 ℃. It can be deoxidized
into metallic tungsten by H2 at high temperatures.
5. 900℃下在45%~60%水汽中穩(wěn)定。
5. Stable in 45% to 60% water vapor below 900 ℃
6. 在40%~55%氫中穩(wěn)定。575~600℃下用氫還原三氧化鎢生成,或用金屬鎢和三氧化鎢反應(yīng)制取。
6. Stable in 40% to 55% hydrogen. It can be deoxidized into tungsten
trioxide by hydrogen at 575 ~
600 ℃ or can be obtained through reaction between metallic tungsten and tungsten trioxide.
7. 二氧化鎢在空氣中很快地被氧化成三氧化鎢,在氧化氮中加熱到500℃時變成藍(lán)色氧化物。
7. tungsten dioxide in air can be rapidly oxidized into tungsten trioxide.
It turns into blue oxides when heating in nitrogen oxides up to 500 ℃.
8. 在1020℃進(jìn),二氧化鎢可被碳還原成金屬鎢。
8. In 1020 ℃ forward,
tungsten carbon dioxide can be reduced to metallic tungsten.
9. 在250~300℃時,用氫氣或一氧化碳還原三氧化鎢、以及在真空中把三氧化鎢加熱到200~250℃時,都可得到粉末狀的紫色氧化鎢(WO2.72)。
9. Powdery purple tungsten oxide (WO2.72) can be obtained through the reduction of tungsten trioxide with hydrogen or
carbon monoxide At 250 ~ 300 ℃ or heating
of tungsten trioxide at 200 ~ 250 ℃ in the vacuum.
10. 制法:將摩爾比 為1:2的鎢粉和WO3混合,并在真空條件下加熱至 950℃,或在900℃條件下用帶有飽和水蒸氣的H2氣流還 原WO3可得。
10. Production method: WO3 and tungsten powder are mixed based on molar
ratio of 1: 2, and heated under vacuum to 950 ℃; Or under 900 ℃, H2 gas saturated with
water vapor deoxidize the WO3.
11. 鎢有四種穩(wěn)定的氧化物:黃色氧化物(WO3),藍(lán)色氧化物(WO2.90),紫色氧化物(WO2.72)和棕褐色氧化物(WO2)。
11. There are four stable tungsten oxide: yellow oxide (WO3), blue oxide
(WO2.90), purple oxide (WO2.72) and brown oxide (WO2).
三.產(chǎn)品用途 Application
制造鎢粉和三氧化鎢的原料
The product can be used to manufacture tungsten powder and tungsten
trioxide.
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