Effect of Hydrogen on the Reduction Kinetics of Manganese Oxide at High Temperatures by New EGA Method

摘要

The present study is concerned with the kinetics of carbon reduction of manganese oxide and the effect of hydrogen addition on this reduction process by the new technique, simultaneous measurement of evolved gas analysis (EGA) and the humidity sensor (HS). Water vapor evolved by the reduction with hydrogen was also detected by Humidity sensor. In the reduction process of MnO, manganese carbide was formed at an earlier stage of reduction, and the activation energy of 203 kJ mol~-1 nearly equal to that for Boudouard's reaction was obtained.