A thermodynamic analysis of the reduction of iron and tungsten oxides by hydrogen

1975 ◽  
Vol 14 (2) ◽  
pp. 89-92
Author(s):  
Yu. G. Gurevich ◽  
I. D. Radomysel'skii ◽  
L. F. Barshchevskaya ◽  
N. R. Frage ◽  
Yu. I. Pozhidaev
Keyword(s):  
Thermodynamic Analysis ◽  
Tungsten Oxides ◽  
Reduction Of Iron ◽  
And Tungsten

Some characteristic features of the coreduction of iron and tungsten oxides with hydrogen

1974 ◽  
Vol 13 (10) ◽  
pp. 787-791
Author(s):  
I. D. Radomysel'skii ◽  
L. F. Barshchevskaya ◽  
R. Z. Vlasyuk
Keyword(s):  
Tungsten Oxides ◽  
Characteristic Features ◽  
And Tungsten

Relationship between structure and point of zero surface charge for molybdenum and tungsten oxides supported on alumina

1992 ◽  
Vol 16 (3) ◽  
pp. 231-239 ◽  
Author(s):  
S. D. Kohler ◽  
J. G. Ekerdt ◽  
D. S. Kim ◽  
I. E. Wachs
Keyword(s):  
Surface Charge ◽  
Tungsten Oxides ◽  
And Tungsten

Direct Synthesis and Structural Characteristics of Ordered SBA-15 Mesoporous Silica Containing Tungsten Oxides and Tungsten Carbides

2007 ◽  
Vol 111 (42) ◽  
pp. 15173-15184 ◽  
Author(s):  
Linhua Hu ◽  
Shengfu Ji ◽  
Zheng Jiang ◽  
Huanling Song ◽  
Pingyi Wu ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Structural Characteristics ◽  
Direct Synthesis ◽  
Tungsten Carbides ◽  
Tungsten Oxides ◽  
And Tungsten

Study of the electronic structure of rhenium and tungsten oxides on the O K-edge

Ionics ◽  
1998 ◽  
Vol 4 (1-2) ◽  
pp. 101-105 ◽  
Author(s):  
J. Purans ◽  
A. Kuzmin ◽  
Ph. Parent ◽  
C. Laffone
Keyword(s):  
Electronic Structure ◽  
Tungsten Oxides ◽  
And Tungsten

Thermodynamic Analysis of the Reduction of WO3 by Al Powder

2012 ◽  
Vol 581-582 ◽  
pp. 616-619
Author(s):  
Lian Ping Chen ◽  
Yuan Hong Gao ◽  
Bai Tao Su
Keyword(s):  
Gibbs Energy ◽  
Ball Milling ◽  
Thermodynamic Analysis ◽  
Room Temperature ◽  
Tungsten Powder ◽  
Tungsten Oxides ◽  
Al Powder

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 WO3by Al powder is investigated thermodynamically. Simulations on the loss of Gibbs energy of these hypothetic reactions reveal that the reduction of WO3and 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, WO2.72and WO2.9. In addition, it is better to prepare tungsten powder in vacuum containers in view of economy.

Colour Changes Induced in Molybdenum and Tungsten Oxides under Flame Impact

Nature ◽  
1949 ◽  
Vol 164 (4169) ◽  
pp. 537-538 ◽  
Author(s):  
J. R. ARTHUR
Keyword(s):  
Tungsten Oxides ◽  
Colour Changes ◽  
And Tungsten
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