Ozone Decomposition over Cobalt Supported on Olive Stones Activated Carbon: Effect of Preparation Method on Catalyst Activity |
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| Authors: | Asma Abdedayem Monia Guiza Francisco Javier Rivas Toledo Abdelmottaleb Ouederni |
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| Affiliation: | 1. Research Laboratory Process Engineering and Industrial Systems, National School of Engineers of Gabes, University of Gabes, Street Omar Ibn El Khattab, 6029 Gabes, Tunisia;2. Departamento de Ingeniería Química y Química Física, Universidad de Extremadura, 06071 Badajoz, Spain |
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| Abstract: | Aqueous ozone decomposition was studied over highly dispersed cobalt nanoparticles supported on olive stones activated carbon (AC) prepared by: wetness impregnation (Co/ACw) and incipient wetness impregnation (Co/ACiw) with respect to pore volume. Nitrogen adsorption-desorption at 77K, SEM, XRD and XPS analyses were used to characterize the catalysts. Analyses results show that Co/ACw was more uniformly dispersed on the AC than Co/ACiw. The effect of the presence of tert-butanol as radical scavenger was also studied. Higher catalytic activity was measured for Co/ACw than Co/ACiw. Ozone decomposition extent goes to 99% in only 3 min in the presence of Co/ACw compared to 60% and 58% using Co/ACiw catalyst and AC, respectively. |
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| Keywords: | Ozone Activated Carbon Cobalt Catalyst Impregnation Method Kinetic Study Ozone Decomposition |
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