一.产品介绍 Product
Overview
产品名称: 二氧化钨
Product Name: 二氧化钨
英文名称: tungsten dioxide
English Name:
tungsten dioxide
生产: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.产品性质 General Properties
1.棕色单斜晶系粉末状晶体。密度10.9~11.1g/cm3。
1. Monoclinic brown powdery crystals. Density is 10.9 ~ 11.1g / cm3.
2. 熔点1500~1600℃。沸点1730℃;生成热134千卡/mol,1050℃易挥发。
2. Melting point
of 1500~1600℃ and boiling point of沸点1730℃; generate 134
kcal / mol of heat and easily volatile at 1050℃.
3. 不溶于水、碱溶液、盐酸和稀硫酸中。但溶于H2SO4,生成红色盐。易被硝酸氧化成高价氧化钨。
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. 在惰性气体中易歧化,生成金属钨和三氧化钨。在N2气流中加热至1500~1600℃时熔融同时分解。在高温时能被H2还原为金属钨。
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%水汽中稳定。
5. Stable in 45% to 60% water vapor below 900 ℃
6. 在40%~55%氢中稳定。575~600℃下用氢还原三氧化钨生成,或用金属钨和三氧化钨反应制取。
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. 二氧化钨在空气中很快地被氧化成三氧化钨,在氧化氮中加热到500℃时变成蓝色氧化物。
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℃进,二氧化钨可被碳还原成金属钨。
8. In 1020 ℃ forward,
tungsten carbon dioxide can be reduced to metallic tungsten.
9. 在250~300℃时,用氢气或一氧化碳还原三氧化钨、以及在真空中把三氧化钨加热到200~250℃时,都可得到粉末状的紫色氧化钨(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:将摩尔比 为1:2的钨粉和WO3混合,并在真空条件下加热至 950℃,或在900℃条件下用带有饱和水蒸气的H2气流还 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. 钨有四种稳定的氧化物:黄色氧化物(WO3),蓝色氧化物(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.产品用途 Application
制造钨粉和三氧化钨的原料
The product can be used to manufacture tungsten powder and tungsten
trioxide.
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