A Cu/ZnO/Al2O3 catalyst derived from a hydrotalcite precursor is studied for the OSRM process. Catalytic tests are carried out at T = 200-400°C, H2O/CH3OH/O2 = 1.1/1/0.12 , GHSV = 60000, 120000 h-1. A reaction network involving, besides methanol steam reforming and partial oxidation, dehydration, dehydrogenation to formaldehyde, decomposition and CO methanation is proposed. The catalytic activity is strongly dependent on GHSV and temperature. The influence of operating conditions on the copper oxidation state is evidenced. Infrared studies and NH3 TPD characterization show the presence of different surface sites with acid and redox properties that can be involved in dehydration, dehydrogenation and oxidation reactions
H2 Production by Oxidative Steam Reforming of Methanol on Hydrotalcite-derived Catalysts: Mechanism and Reaction Path / Turco, Maria; Bagnasco, Giovanni; F., Marmottini; U., Costantino; T., Montanari; G., Ramis; G., Busca. - STAMPA. - 4:(2004), pp. 105-110.
H2 Production by Oxidative Steam Reforming of Methanol on Hydrotalcite-derived Catalysts: Mechanism and Reaction Path
TURCO, MARIA;BAGNASCO, GIOVANNI;
2004
Abstract
A Cu/ZnO/Al2O3 catalyst derived from a hydrotalcite precursor is studied for the OSRM process. Catalytic tests are carried out at T = 200-400°C, H2O/CH3OH/O2 = 1.1/1/0.12 , GHSV = 60000, 120000 h-1. A reaction network involving, besides methanol steam reforming and partial oxidation, dehydration, dehydrogenation to formaldehyde, decomposition and CO methanation is proposed. The catalytic activity is strongly dependent on GHSV and temperature. The influence of operating conditions on the copper oxidation state is evidenced. Infrared studies and NH3 TPD characterization show the presence of different surface sites with acid and redox properties that can be involved in dehydration, dehydrogenation and oxidation reactionsI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
