摘要
采用化学还原法制备了非晶态Ni-B超细粒子催化剂,所含两种粒子的粒径分别为5~20nm和150nm左右.对环戊二烯常压液相加氢反应的活性测试结果表明,该催化剂具有很高的活性和选择性,并且在加氢反应中具有替代Raney Ni和Pd/C 催化剂的工业应用潜力.动力学测量表明,在该催化剂上,环戊二烯选择加氢生成环戊烯的反应为零级,环戊烯生成环戊烷的反应为近似一级.
The amorphous Ni-B ultrafine particles were prepared by using KBH4 to reduce Ni2+ ion in ethanol solution, and two kinds of particles with the average diameter around 150 nm 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, Eaney Ni and Pd/O 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 roaction of hydrogenation instead of Raney Ni and Pd/O catalysts.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
1994年第1期53-58,共6页
Acta Chimica Sinica
基金
国家教委博士点专项基金资助项目