Thermal analysis on conversion of MoO3 to MoO2 and its silicothermic reduction

被引:0
作者
Bhaskar Paul
Jugal Kishor
S. P. Chakraborty
A. K. Suri
机构
[1] BARC,Materials Processing Division
来源
Journal of Thermal Analysis and Calorimetry | 2013年 / 112卷
关键词
Silicothermic reduction; Refractory metal; Thermal analysis; SEM; Activation energy;
D O I
暂无
中图分类号
学科分类号
摘要
The present paper deals with differential thermal analysis studies conducted to find out the onset temperature for silicothermic reduction of MoO2 to Mo. The reaction kinetics of Si–MoO2 system has been analyzed by a model-free Kissinger method. X-ray diffraction analysis has confirmed the formation of Mo metal and SiO2 as the slag phase after silicothermic reduction of MoO2. The activation energy for silicothermic reduction of MoO2 to Mo was evaluated to be 309 kJ mol−1.
引用
收藏
页码:31 / 36
页数:5
相关论文
共 55 条
[1]  
Sharma IG(2005)Preparation of TZM alloy by aluminothermic smelting and its characterization J Alloy Compd 393 122-127
[2]  
Chakraborty SP(2009)Studies on the synthesis and characterization of a molybdenum-based alloy J Alloy Compd 477 256-261
[3]  
Suri AK(2011)Studies on synthesis and characterization of Mo based in situ composite by silicothermy co-reduction process Mater Trans B 42 700-710
[4]  
Chakraborty SP(1995)Kinetics and mechanism of molybdenum (VI) oxide reduction J Solid State Chem 118 84-92
[5]  
Banerjee S(2004)A model for the kinetics of mechanically assisted gas-solid reaction Scr Mater 50 99-104
[6]  
Sharma IG(1979)The kinetics of the hydrogen reduction of MoO Mater Sci Eng 40 245-250
[7]  
Paul B(2012) powder Int J Refract Met Hard Mater 33 122-123
[8]  
Suri AK(2008)Rate control mechanism for the hydrogen reduction of MoO Met Trans 39B 431-38
[9]  
Paul B(1995) to MoO J Therm Anal 44 441-451
[10]  
Chakraborty SP(2007)Kinetic studies on hydrogen reduction of MoO3 and morphological analysis of reduced Mo powder J Chem Thermodyn 39 1539-1545