INTEQUI 20941
INSTITUTO DE INVESTIGACIONES EN TECNOLOGIA QUIMICA
Unidad Ejecutora - UE
artículos
Título:
Catalysts of alkaline nitrates supported on oxides for the diesel soot
Autor/es:
MARIA LUCIA RUIZ; ILEANA DANIELA LICK; MARTA ISABEL PONZI; ESTHER NATALIA PONZI
Revista:
CATALYSIS COMMUNICATIONS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2013 vol. 34 p. 45 - 51
ISSN:
1566-7367
Resumen:
The deactivation of supported catalysts CsNO3 and LiNO3 for diesel soot combustion is studied in this work.The effect of hydro-treatment at high temperature and presence of CO2 in feed flow were investigated. Catalysts were characterized by means of X ray diffraction, DSC technique and FTIR. A fixed bed reactor was used to measure activity of fresh and deactivated catalysts with NO2/O2 feed. Thermogravimetrical system with air/CO2 feed was used to study the deactivation with CO2. Catalysts with LiNO3 were the most resistant to deactivation by hydro-treatment, and they are not deactivated by CO2. It is postulated that the cesium nitrate solubilizes in water and is eliminated during the hydro-treatment, instead, lithium species interacted more strongly with the support and generate more resistance species.
