| 摘要 |
<p>The object of the invention is the synthesis of threadlike tungsten oxide W5O14, in the presence of nickel at a temperature lower than 1000° C. Represented is a procedure for the synthesis of a highly homogeneous phase of the W5O14 compound from the vapor phase, in the presence of nickel, by means of a chemical transport method in a closed quartz ampoule. As an alternative example, a procedure is represented for the synthesis of the W5O14 compound in a through-flow reaction vessel. Both procedures yield electrically conductive threadlike crystals of the W5O14 compound. The synthesis is performed in vapor phase. Tungsten enters the reaction as a pure phase or via WS2±x, x≈0, previously synthesized from the elements, and/or the source of tungsten may also be tungsten oxides WO3-Y, 0@y@1. Nickel may enter the reaction via NiI2, Ni(OH)2 and/or atomic nickel.</p> |
