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

Facile Synthesis of Ammonium Aluminum Carbonate Hydroxide Multilayered Nanofiber by Using Solid State Reaction

2011 ◽  
Vol 415-417 ◽  
pp. 580-584 ◽  
Author(s):  
Xiao Fu Hu ◽  
Yun Qi Liu ◽  
Chen Guang Liu
Keyword(s):  
Phase Transformation ◽  
Elevated Temperature ◽  
Solid State ◽  
Low Temperature ◽  
Aluminum Oxide ◽  
Solid State Reaction ◽  
Particle Sizes ◽  
Facile Synthesis ◽  
New Synthesis ◽  
Carbonate Hydroxide

In this paper, we make systematical investigation for the new synthesis pathway of AACH multilayered nanofiber, which has been prepared by a low-temperature solid-state reaction. The phase transformation sequence of AACH on heating is found that the precursor converts into γ-Al2O3at 700-900°C and elevated temperature results in the θ-Al2O3and α- Al2O3crystal phase formation at 1000°C. With a higher calcination temperature at 1100°C, α- Al2O3pattern appears. The specific surface area (SBET) of aluminum oxide specie calcined at 500°C for 4h is still in 420.2m2/g. Meanwhile, it suggests a partial change in particle sizes and morphology of sample calcined at 500°C for 4h.

Solid-state reaction between zinc oxide and ferric oxide

1969 ◽  
Vol 65 ◽  
pp. 219 ◽  
Author(s):  
R. Parker ◽  
C. J. Rigden ◽  
C. J. Tinsley
Keyword(s):  
Zinc Oxide ◽  
Solid State ◽  
Ferric Oxide ◽  
Solid State Reaction

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.

Sign in / Sign up

Export Citation Format

Share Document