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Type: Journal article
Title: Chemical-physical properties of spinel CoMn₂O₄ nano-powders and catalytic activity in the 2-propanol and toluene combustion: effect of the preparation method
Other Titles: Chemical-physical properties of spinel CoMn(2)O(4) nano-powders and catalytic activity in the 2-propanol and toluene combustion: effect of the preparation method
Author: Hosseini, S.
Salari, D.
Niaei, A.
Deganello, F.
Pantaleo, G.
Hojati, P.
Citation: Journal of Environmental Science and Health Part A: Toxic Hazardous Substances and Environmental Engineering, 2011; 46(3):291-297
Publisher: Taylor & Francis
Issue Date: 2011
ISSN: 1093-4529
Statement of
Seyed Ali Hosseini, Dariush Salari, Aligholi Niaei, Francesca Deganello, Giuseppe Pantaleo, Pejman Hojati
Abstract: Spinel-type CoMn(2)O(4)nano-powders are prepared using sol-gel auto combustion (SGC) and co-precipitation (CP) methods and their catalytic activities are evaluated in combustion of 2-propanol and toluene. The chemical-physical properties of the oxides are characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), N(2)-adsorption-desorption, temperature programmed reduction (TPR) and scanning electron microscopy (SEM). After calcination at 700°C, CoMn(2)O(4)-SGC shows higher amounts of the normal-type spinel phase and is more crystalline than CoMn(2)O(4)-CP. Higher calcination temperatures (850°C) do not affect very much the weight percentage of the normal-type spinel phase; although the crystal size slightly increased. The TPR analysis evidences a large number of Mn(3+) cations in CoMn(2)O(4)-SGC compared to CoMn(2)O(4)-CP. This difference, together with the higher surface area, could justify the higher activity of CoMn(2)O(4)-SGC in both the investigated reactions.
Keywords: Spinel oxides
catalytic oxidation
Rights: Copyright © Taylor & Francis Group, LLC
DOI: 10.1080/10934529.2011.539093
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