FEM STUDY OF CO AND H-2 INTERACTION WITH A SUPPORTED BIMETALLIC CATALYST - MO-PD AL2O3/W/

Palladium and molybdenum were deposited onto a continuous layer of Al2 O3 covering a tungsten field emitter. The adsorption of CO at 300 K on such a model system shows unexpected increase in the electron emissio n from both metals. This effect can either be understood in terms of a resonance enhancement of electron tunneling, or it can result from sp ecific interactions of CO with supported clusters as compared to CO in teraction with bulk metals. Coadsorption of CO and 112 on the mixed mo lybdenum and palladium surface exhibits features different from coadso rption on the individual metals.