Thermodynamic Analysis of the Reduction of WO3 by Al Powder

摘要：

　　Hydrogen is widely used to prepare tungsten from tungsten oxides.Such a gas is combustible and strict measures must be taken.However,assisted by Mg or Li3N,tungsten can be prepared through the ball milling at room temperature.The reduction of WO3 by Al powder is investigated thermodynamically.Simulations on the loss of Gibbs energy of these hypothetic reactions reveal that the reduction of WO3 and WO2(OH)2 (or H2WO4) is feasible when Al powder is used; and it is more difficult to generate the intermediate tungsten oxides such as WO2,WO2.72 and WO2.9.In addition,it is better to prepare tungsten powder in vacuum containers in view of economy.

关键词： Reduction Al WO3 Gibbs energy

作者: Lian Ping Chen Yuan Hong Gao Bai Tao Su

作者单位: School of Materials Science and Engineering, Jiangxi University of Science and Technology, 86 Red Avenue, Ganzhou, Jiangxi, China

会议类型: 国际会议

会议名称: 2012 International Conference on Chemical Engineering,Metallurgical Engineering and Metallic Materials(2012化工、冶金和金属材料国际会议(CMMM2012))

会议地点: 昆明

会议语种:英文

页码: 616-619

在线出版日期: 2012-10-12（万方平台首次上网日期，不代表论文的发表时间）