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An analysis of physic-chemical processes in the redox cycle of hydrogen production in the interaction of tungsten and tungsten oxides with carbon-intensive oxidizing and reducing environments

 
.Pasichnyy
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Krzhizhanovsky str., 3, Kyiv, 03142, Ukraine
Modern Problems in Physical Materials Science - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2012, #21
http://www.materials.kiev.ua/article/2087

Abstract

The data allow one to perform a thermodynamic analysis of the reduction or oxidation processes occurring in the W—CO—CO2-C system and, basing on them, to predict the mechanism of interaction of the system components. Temperature regimes are established in which these processes become a reality. When using the thermodynamic data obtained, a reaction medium can be selected and its composition can be established depending on the final product — W or WC. Cyclical processes in the tungsten reduction/carbonization stages are shown to be efficient.


OXIDE, REDUCTION/OXIDATION REACTION, THERMODYNAMIC ANALYSIS, TUNGSTEN