Potential of Ceria-Based Catalysts for the Oxidation of Landfill Leachate by Heterogeneous Fenton Process
Table 2
Characteristics of catalysts used in this study and crystallographic parameters of modified ceria samples as obtained from Rietveld refinement and Vegard’s law.
Sample
Composition
BET surface area (m2/g)
Crystallite size (nm)
Phase
Cell parameter
(Å)
From Vegard’s law
CZ100
CeO2
53
7
Cubic
5.411 (1)
5.411
CZ44
Ce0.44Zr0.56O2
90
4.7
Cubic
5.281 (1)
5.285
CF
Ce0.85Fe0.15O1.925
77
7.5
Cubic
5.396 (1)
5.263
CF (1073 K)
Ce0.85Fe0.15O1.925
22
31.1
Cubic
5.408 (1)
5.263
CZF
Ce0.45Zr0.40Fe0.15O1.925
132
3.5
Cubic
5.295 (1)
5.163
CZF (1073 K)
Ce0.45Zr0.40Fe0.15O1.925
22
8.9
Cubic
5.292 (1)
5.163
Calculated with Scherrer formula from X-ray diffraction patterns.
