Structure and catalytic activity of CoxMg1–xAl2O4 spinel solid solutions. Part 2.—Decomposition of N2O

1978 ◽  
Vol 74 (0) ◽  
pp. 1595 ◽  
Author(s):  
Carlo Angeletti ◽  
Franco Pepe ◽  
Piero Porta
Keyword(s):  
Catalytic Activity ◽  
Solid Solutions ◽  
Spinel Solid Solutions

scholarly journals Some Aspects of Spinodal Decomposition in Spinel Solid Solutions

1995 ◽  
Vol 50 (6) ◽  
pp. 525-532
Author(s):  
N. Burkert ◽  
R. Grüne ◽  
H. Schmalzried ◽  
S. Rahman
Keyword(s):  
Spinodal Decomposition ◽  
Solid Solutions ◽  
Common Property ◽  
Transport Theory ◽  
Decomposition Reaction ◽  
Sufficient Evidence ◽  
Spinel Crystal ◽  
Linear Transport Theory ◽  
Spinel Solid Solutions ◽  
Quasi Binary System

Abstract Decomposition morphologies of supersaturated spinel solid solutions in the quasi-binary system Co2TiO4-CoAl2O4 at 973 K show all pertinent features of spinodal decomposition. Since the decomposition morphology may not be considered as sufficient evidence for a spinodal process, the thermodynamics of the spinel solid solutions and the linear transport theory of spinodal decomposition were combined to corroborate the experimental results of the early decomposition reaction.Simultaneous ordering, a common property of ternary and higher nonequilibrium solid solutions, was also observed. These ordering processes occur locally in distinct regions of the spinel crystal. Moreover, the spinodal wavelength λ increases in time according to λ ∞ t, which is unusual and will be discussed in the light of cation diffusion in semiconducting oxides with two cation sublattices.

ChemInform Abstract: LaAl1-xCrxO3 Perovskite-Type Solid Solutions: Structural, Electronic, Magnetic Properties and Catalytic Activity Towards CO Oxidation.

ChemInform ◽  
2010 ◽  
Vol 33 (41) ◽  
pp. no-no
Author(s):  
Dante Cordischi ◽  
Sergio De Rossi ◽  
Marco Faticanti ◽  
Giuliano Minelli ◽  
Piero Porta
Keyword(s):  
Magnetic Properties ◽  
Catalytic Activity ◽  
Co Oxidation ◽  
Solid Solutions ◽  
Perovskite Type
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