钨酸铜的生成及其氢还原过程的研究

来源期刊：中南大学学报(自然科学版)1993年第1期

论文作者：吴恩熙 钱崇梁 邹志强 张玉华

文章页码：64 - 68

关键词：钨酸铜; 复合粉; X射线衍射; 相变

Key words：copper tungstate; composite powder; phase transformation; X-ray diffraction

摘    要：本文提出一种生产微细钨铜复合粉的方法。将WO₃(或蓝钨)和CuO均匀混合,在空气中焙烧生成CuWO₄,再在氢气中还原,就能制得微细钨铜复合粉,其钨、铜两相分布均匀,钨颗粒细小且分布狭窄。本文详细地研究了钨酸铜的生成及其氢还原过程,与WO₃相比,发现两者的还原相变过程及动力学过程有某些差异。

Abstract: This study deals with a new method for the preparation of fine tungsten-copper com-posite powder. First, the WO₃ or blue tungsten oxide powder was mixed uniformly with CuO powder. Then, the mixture was calcined in air and became CuWO₄ powder. Finally, the powder was reduced with H₂. The tungten-copper composite powder with very fine tungstenparticles and well-sized distribution can be prepared. The detail of the formation and H₂-re-duction characteristics of the copper tungstate are given in this paper. The difference of the reduction characteristics of the copper tungstate and the WO₃ is also presented.