期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 144, 期 -, 页码 425-434出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2013.07.045
关键词
Cobalt catalysts; La-modified-CeO2; Honeycomb monolith; VOCs oxidation; Washcoating
资金
- Ministry of Science and Innovation of Spain/FEDER Program of the EU [MAT2008-00889/NAN, CSD2009-00013]
- Junta de Andalucia [FQM-110, FQM-334]
- UPV/EHU [GIU 11/13]
A novel Co (15 wt.%)/La-modified-CeO2 catalyst was prepared for the oxidation of toluene and ethyl acetate, showing lower light-off temperature (around 20-40 degrees C) than that of a Pt (3 wt.%)/La-CeO2 catalyst under the same experimental conditions. Upon washcoating onto cordierite it was still more active than the noble metal reference. The activity remained stable even after 80 h of reaction. Adherence tests indicated a 98% stability of the washcoat, while SEM-EDS study evidenced its homogeneous distribution on the cordierite. ICP analysis and X-ray diffraction demonstrated that the composition and cobalt phase (Co3O4) of the powdered catalyst were the same in the washcoat. Moreover textural properties improved according to N-2 physisorption studies due to inclusion of colloidal alumina in the slurry. (C) 2013 Elsevier B.V. All rights reserved.
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