非晶态合金作催化材料的研究 Ⅳ.超细非晶态Ni-B催化剂的制备及催化性能研究  

Studies of Amorphous Metals as Catalytic Material Ⅳ. Preparation of Amorphous Ni-B Ultrafine Particles and its Catalytic Properties

作　　者：杨军[1] 柴亮[1] 邓景发[1] 赵慧玲 

机构地区：[1]复旦大学化学系,上海200433 [2]复旦大学分析测试中心电镜室,上海200433

出　　处：《化学学报》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

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.

关 键 词：超细粉 非晶态合金 催化 环戊二烯 

分 类 号：O643.36[理学—物理化学]