<正> D-72 resin supported nickel-copper catalysts prepared by solvated metal atom impreg-nation （SMAI） were studied by magnetic measurements and X-ray photoelectron spectro-scopy （XPS）. The Ni particles on the catalysts are very highly dispersed and displaysuperparamagnetic behaviour. Ni-Cu alloy clusters were found to be formed. The sur-face compositions are different from the bulk concentrations. In contrast with the surfaceenrichment in copper generally observed on conventional Ni-Cu catalysts

the surfaces ofthese catalysts are enriched in nickel. The nickel is in both zero and valent states

whilecopper is mainly in metallic state. Catalytic data show that the formation of Ni-Cu alloyclusters has a profound effect on the catalytic activities of the catalysts in the hydrogena-tion of furfural. The activity of the Ni:Cu ratio of one bimetallic catalysts is much higherthan that of the Ni or Cu monometallic catalyst.