The activity and stability of bimetallic Pt-Ni/CeO2 catalysts supported over mesoporous silica, for steam (ESR) and oxidative steam reforming (OSR) of ethanol in the lowtemperature range (300-600°C) was studied. The influence of temperature and gas hourly space velocity (GHSV between 10000 and 30000 h-1) on product gas distribution was investigated, showing that at T>480 °C the system reached thermodynamic equilibrium in both the scenarios, independently from the contact time values. During time-on-stream (TOS) tests at 500°C, oxygen co-feeding strongly improved catalyst durability, depressing coke formation and also resulting in lower CO selectivity.
Oxidative steam reforming of ethanol on mesoporous silica supported Pt-Ni/CeO2 catalysts
PALMA, Vincenzo;RUOCCO, CONCETTA;MELONI, EUGENIO;RICCA, ANTONIO
2015
Abstract
The activity and stability of bimetallic Pt-Ni/CeO2 catalysts supported over mesoporous silica, for steam (ESR) and oxidative steam reforming (OSR) of ethanol in the lowtemperature range (300-600°C) was studied. The influence of temperature and gas hourly space velocity (GHSV between 10000 and 30000 h-1) on product gas distribution was investigated, showing that at T>480 °C the system reached thermodynamic equilibrium in both the scenarios, independently from the contact time values. During time-on-stream (TOS) tests at 500°C, oxygen co-feeding strongly improved catalyst durability, depressing coke formation and also resulting in lower CO selectivity.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
