co-al mixed oxides prepared via ldh route using microwaves or ultrasound: application for catalytic toluene total oxidation
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2015
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Abstract
Co6Al2HT hydrotalcite-like compounds were synthesized by three different methods: co-precipitation, microwaves-assisted and ultrasound-assisted methods. The mixed oxides obtained after calcination were studied by several techniques: XRD, TEM, H2-TPR and XPS. They were also tested as catalysts in the reaction of total oxidation of toluene. The physico-chemical studies revealed a modification of the structural characteristics (surface area, morphology) as well as of the reducibility of the formed mixed oxides. The solid prepared by microwaves-assisted synthesis was the most active. Furthermore, a relationship between the ratio of Co2+ on the surface, the reducibility of the Co-Al mixed oxide and the T50 in toluene oxidation was demonstrated. This suggests a Mars Van Krevelen mechanism for toluene total oxidation on these catalysts.| Reference Key |
genty2015catalystsco-al
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| Authors | ;Eric Genty;Julien Brunet;Christophe Poupin;Sandra Casale;Sylvie Capelle;Pascale Massiani;Stéphane Siffert;Renaud Cousin |
| Journal | journal of essential oil research |
| Year | 2015 |
| DOI | 10.3390/catal5020851 |
| URL | |
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