No abstract

Carbon monoxide and H2 were allowed to react to produce methanol over Pd catalyst, and the effect of the supports was investigated. Among the supports examined, oxides of lanthanide such as La203, Pr6Oll, Sm203, CTd203, and Dy203 exhibited considerable performance for the synthesis of methanol at low temperatures (250 -300~ The behavior of CeO2 was peculiar in activating Pd remarkably, while the selectivity to methanol was low and the main product was methane. In order to take advantage of the feature of CeO2, Pd was loaded on basic supports (ZnO, MgO, and TiBaO3) and a small amount of CeO2 was added. These CeO2-promoted Pd catalysts exhibited high performance to produce methanol at low temperatures.