INTEQUI   20941
INSTITUTO DE INVESTIGACIONES EN TECNOLOGIA QUIMICA
Unidad Ejecutora - UE
artículos
Título:
Combustion of diesel soot in NO/O2 presence. Cesium nitrate and gold catalysts
Autor/es:
MARÍA L. RUIZ; ILEANA D. LICK; MARTA I. PONZI; ENRIQUE RODRÍGUEZ CASTELLÓN; ANTONIO JIMÉNEZ LÓPEZ; ESTHER N. PONZI
Revista:
APPLIED CATALYSIS A-GENERAL
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Año: 2010 vol. 392 p. 45 - 56
ISSN:
0926-860X
Resumen:
The diesel soot combustion was studied using catalysts prepared by impregnation with cesium nitrate and/or gold on zirconium oxide (ZrO2), hydrated zirconium oxide and silica (SiO2). Catalysts were characterized by colorimetry, elemental analysis, atomic absorption spectrophotometry, XRD, FTIR, TPR and XPS. Measurements of catalytic activity were performed in a thermobalance with air and in a fixed bed reactor with a NO/O2 feed. All catalysts containing cesium nitrate exhibit a good activity for soot oxidation and the addition of gold substantially increases the CO2 generation leading the selectivity to 100% in CO2.