Catalysis Letters, Vol.23, No.1-2, 79-86, 1994
Organometallics Derived (Pd+ln)/SiO2 Catalysts for the Reactions of Synthesis Gas Conversion
C3H6 hydroformylation and CH3OH synthesis on organometallics derived (Pd + Ln)/SiO2 and Pd/SiO2 catalysts have been studied. The activity and selectivity towards methanol in CO + H-2 reaction were observed to increase for all the modified catalysts while both the hydroformylation activity and selectivity towards oxygenates in C3H6 hydroformylation decreased for the catalysts in comparison to those of Pd/SiO2. The FRIR, TPD data and characteristic catalytic properties of the catalysts studied allow to suggest that C3H6 hydroformylation on (Pd + Ln)/SiO2 catalysts occurs on monometallic Pd clusters without participation of mixed active sites and CO complexes activated thereon.
Keywords:SUPPORTED PALLADIUM CATALYSTS;ATMOSPHERIC-PRESSURE;CO HYDROGENATION;PD/SIO2;HYDROFORMYLATION;SILICA;IONS;H-2;MECHANISM;ETHYLENE