STUDIES OF AMORPHOUS METALS AS CATALYTIC MATERIAL .4. PREPARATION OF AMORPHOUS NI-B ULTRAFINE PARTICLES AND ITS CATALYTIC PROPERTIES

The amorphous Ni-B ultrafine particles were prepared by using KBH4 to reduce Ni2+ ion in ethanol solution, and two kinds of particles with t he average diameter around 150 nm and 5 approximately 25nm respectivel y were observed. The hydrogenation of 1, 3-cyclopentadiene were also i nvestigated by using these particles, and a higher hydrogenation activ ity and selectivity of cyclopentene were observed. As a comparation, R aney Ni and Pd/C catalysts were also used to catalyze the same reation . The results show that amorphous Ni-B ultrafine particles display to have a higher catalytic hydrogenation ability and can be used in the r eaction of hydrogenation instead of Raney Ni and Pd/C catalysts.