The amorphous Ni-B ultrafine particles were prepared by using KBH~4 to reduce Ni^2+ ion in ethanol solution, and two kinds of particles with the average diameter around 150nm and 5~25nm respectively were observed. The hydrogenation of 1, 3-cyclopentadiene were also investigated by using these particles, and a higher hydrogenation activity and selectivity of cyclopentene were observed. As a comparation, Raney Ni and Pd/C catalysts were also used to catalyze the same reaction. The results show thatamorphous Ni-B ultrafine particles display to have a higher catalytic hydrogenation ability and can be used in the reaction of hydrogenation instead of Raney Ni and Pd/C catalysts.

Key words: CATALYSIS, CATALYST, NICKEL, CYCLOPENTADIENE, BORON, MICRO-SIZE PARTICLES, AMORPHOUS ALLOY