REDUCTION OF WO3 BY PHOSPHORUS
REDUCTION OF WO3 BY PHOSPHORUS
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DOI：
10.3891/acta.chem.scand.45-0781
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发表时间：
1991-09-01
期刊：
影响因子：
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通讯作者：
GRUEHN, R
中科院分区：
文献类型：
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作者：
MATHIS, H;GLAUM, R;GRUEHN, R
WO 3在800 ℃下被元素磷还原导致形成几种产物。 在本研究过程中，根据摩尔比n（P）：n（WO 3），制备了WP、WP 2、WPO 5，并首次制备了二磷酸钨（IV）WP 2 O 7。 通过化学气相转移反应（转移剂碘; 200毫克/克; 1050 -> 950 ℃），钨的磷化物和磷酸盐可以被纯化和结晶。 非均相和均相平衡，负责气相运输的钨化合物，将进行讨论。
The reduction of WO3 by elemental phosphorus at 800-degrees-C leads to the formation of several products. Depending on the molar ratio n(P):n(WO3) in the course of this investigation, WP, WP2, WPO5 and, for the first time, tungsten(IV) diphosphate, WP2O7, were prepared. By chemical vapour transport reactions (transport agent iodine; 200 mg per ampoule; 1050 --> 950-degrees-C), the phosphides and phosphates of tungsten can be purified and crystallized. Heterogeneous and homogeneous equilibria, responsible for the vapour-phase transport of the tungsten compounds, will be discussed.