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

被引：5

作者：

Paul, Bhaskar ^{[1
]}

Kishor, Jugal ^{[1
]}

Chakraborty, S. P. ^{[1
]}

Suri, A. K. ^{[1
]}

机构：

[1] Bhabha Atom Res Ctr, Mat Proc Div, Bombay 400085, Maharashtra, India

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2013年 / 112卷 / 01期

关键词：

Silicothermic reduction; Refractory metal; Thermal analysis; SEM; Activation energy; HYDROGEN REDUCTION; KISSINGER EQUATION; KINETICS; APPLICABILITY; MECHANISM; POWDER; ALLOY; MODEL;

D O I：

10.1007/s10973-012-2828-y

中图分类号：

O414.1 [热力学];

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

页码：31 / 36

页数：6

共 24 条

[1]

[Anonymous], 1995, THERMODYNAMIC DATA P

[2] Evaluation on nonisothermal crystallization kinetics of polypropylene/kaolin composites by employing Dobreva and Kissinger methods [J].

Ariffin, A. ;

Ariff, Z. M. ;

Jikan, S. S. .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2011, 103 (01) :171-177

[3] A model for the kinetics of mechanically assisted gas-solid reactions [J].

Bab, MA ;

Mendoza-Zélis, L .

SCRIPTA MATERIALIA, 2004, 50 (01) :99-104

[4] Applicability of the kissinger equation in thermal analysis revisited [J].

Budrugeac, P. ;

Segal, E. .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2007, 88 (03) :703-707

[5] Studies on the synthesis and characterization of a molybdenum-based alloy [J].

Chakraborty, S. P. ;

Banerjee, S. ;

Sharma, I. G. ;

Paul, Bhaskar ;

Suri, A. K. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 477 (1-2) :256-261

[6] THE GENERAL APPLICABILITY OF THE KISSINGER EQUATION IN THERMAL-ANALYSIS [J].

ELDER, JP .

JOURNAL OF THERMAL ANALYSIS, 1985, 30 (03) :657-669

[7] Rate control mechanism for the hydrogen reduction of MoO3 to MoO2 [J].

Enneti, Ravi K. .

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 2012, 33 :122-123

[8] Kinetics of thermite reaction in Al-Fe2O3 system [J].

Fan, RH ;

Lü, HL ;

Sun, KN ;

Wang, WX ;

Yi, XB .

THERMOCHIMICA ACTA, 2006, 440 (02) :129-131

[9] A simple kinetic method for the determination of the reaction model from non-isothermal experiments [J].

Farjas, Jordi ;

Butchosa, Nuria ;

Roura, Pere .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2010, 102 (02) :615-625

[10]

Friedman H J, 1963, J POLYM SCI C, V6C, P183

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