Reaction mechanisms and kinetics of the synthesis and decomposition of lithium metazirconate through solid-state reaction

2004 ◽  
Vol 24 (8) ◽  
pp. 2433-2443 ◽  
Author(s):  
Heriberto Pfeiffer ◽  
Kevin M. Knowles
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Reaction Mechanisms ◽  
Kinetics Of

Kinetics of the solid state reaction between zinc oxide and aluminum oxide

1980 ◽  
Vol 11 (3) ◽  
pp. 455-461 ◽  
Author(s):  
K. Nagata ◽  
K. Sato ◽  
K. S. Goto
Keyword(s):  
Zinc Oxide ◽  
Solid State ◽  
Aluminum Oxide ◽  
Solid State Reaction ◽  
Kinetics Of

Kinetic study and modeling of the solid-state reaction Y2BaCuO5 + 3BaCuO2 + 2CuO ⇉ 2YBa2Cu3O6.5−x + xO2

1990 ◽  
Vol 5 (10) ◽  
pp. 2056-2065 ◽  
Author(s):  
Nae-Lih Wu ◽  
Ta-Chin Wei ◽  
Shau-Y Hou ◽  
S-Yen Wong
Keyword(s):  
Particle Size ◽  
Solid State ◽  
Solid State Reaction ◽  
Size Dependence ◽  
Average Particle Size ◽  
Average Particle ◽  
Fractional Conversion ◽  
X Ray ◽  
Unreacted Core ◽  
Kinetics Of

The kinetics of the solid-state reaction Y2BaCuO5 + 3BaCuO2 + 2CuO ⇉ 2YBa2Cu3O6.5−x + xO2 was studied by using x-ray diffractometric and thermogravimetric analyses. Both analyses established that the reaction was well described by the kinetic equation: 1 − 3(1 − F)2/3 + 2(1 − F) = k0 exp(− E/RT)t, where F is the fractional conversion of a calcined powder, E is 520 kcal/molc and, for a rcactant mixture with an average particle size of 3 μm, k0 is 2.03 ⊠ 1092 min−1. An unreacted-core shrinking model was proposed to obtain the particle-size dependence of the reaction, and predicted that the pre-exponential constant k0 changed with reactant particle size by k0 = 2.03 ⊠ 1092(3/d)2 exp(4/d − 4/3), where d is the average reactant particle size in μm.

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