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1)  porous tungsten
活性钨
2)  activated tungsten oxide
活性氧化钨
1.
With the material of activated tungsten oxide, which has high specific surface energy, high activity and simple composition, submicron W and WC powders can been produced through two main processes of deoxidization and carbonizatioa The main technical parameters, which have an influence on particle size and particle pattern of submicron W and WC powders, have been studied.
以活性较高、比表面能大和相成分单一的活性氧化钨为原料,通过顺氢还原和碳化两个主要工序制取微纳米钨和WC粉末,研究了主要工艺参数对钨和WC粉末粒度分布和颗粒形貌的影响。
2.
Through technical experiment and optimizing, the homogeneous and fine W and WC powder were produced from activated tungsten oxide owing to its characters of fine powder, developed surface energy, high activity and simple composition.
利用活性氧化钨粉末细、表面能发达、活性高、相成分单一等特点 ,经过工艺试验和优化 ,生产出粒度分布较用蓝色氧化钨生产的中细钨、碳化钨粉末均匀 ,同时也减少了中细钨、碳化钨粉末中的粗大晶粒和聚集颗粒 ,从而提高了中细钨、碳化钨粉末的质量 ,并且利用此碳化钨粉末还可以生产出高质量的合金产
3)  white powdery tungstic acid
活性白钨酸
4)  activating-tungsten inert gas welding
活性钨极氩弧焊
5)  tungstophosphoric acid / activated carbon
磷钨酸/活性炭
6)  activated carbon supported phosphotungstic acid
活性炭负载磷钨酸
1.
Synthesis of fructone catalyzed by activated carbon supported phosphotungstic acid;
活性炭负载磷钨酸催化合成苹果酯
2.
The synthesis of 1,2-ethanediol bischloroacetate catalyzed by activated carbon supported phosphotungstic acid was studied.
以氯乙酸、乙二醇为原料,活性炭负载磷钨酸为催化剂合成了氯乙酸乙二醇双酯,并根据酸醇摩尔比、催化剂用量、反应时间及带水剂苯加入量等条件对反应的影响,确定了最佳反应条件。
3.
Synthetic method of cyclohexanone Ethylene Glycol Ketal was investigated using activated carbon supported phosphotungstic acid.
研究了活性炭负载磷钨酸催化合成环己酮缩乙二醇的反应 ,考察了催化剂负载量、反应时间、酮醇物质的量比、反应温度等因素对缩酮反应的影响 。
补充资料:银-氧化锡-氧化钨
分子式:
CAS号:

性质:银基添加氧化锡和氧化钨的电接触材料。氧化钨(或氧化钼)可改善氧化锡的浸润性,减少接点过热。使用寿命大幅度提高。采用烧结挤压法制造。中等负荷电接触材料,用在各种接触器、电机起动器、低功率断路器等电器中。Ag-11.5SNO2-0.5WO3和Ag-11.2SnO2-0.8MoO3可在很多应用领域代替AgCdO。

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