Thermodynamic Analysis of the Reduction of WO3 by Al Powder

被引：0

作者：

Chen, Lian Ping ^{[1
]}

Gao, Yuan Hong ^{[1
]}

Su, Bai Tao ^{[1
]}

机构：

[1] Jiangxi Univ Sci & Technol, Sch Mat Sci & Engn, Ganzhou, Jiangxi, Peoples R China

来源：

FRONTIERS OF MATERIALS, CHEMICAL AND METALLURGICAL TECHNOLOGIES, PTS 1 AND 2 | 2012年 / 581-582卷

关键词：

Reduction; Al; WO3; Gibbs energy;

D O I：

10.4028/www.scientific.net/AMR.581-582.616

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

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.

引用

页码：616 / 619

页数：4

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