太原理工大学学报2012，Vol.43Issue(4)：415-420,6.
Co助剂对Ni-B非晶态催化剂微观结构和加氢性能的影响
Influence of Co on Microstructure and Catalytic Performance of Ni-B Catalyst for Dinitrotoluene Hydrogenation
摘要
Abstract
A series of amorphous Ni-La-B catalyst was prepared by KBH4 reduction for liquid phase hydrogenation of dinitrotoluene(DNT) to diaminotoluene(TDA). The effect of n(KBH4)/ n(Ni) and Co content on microstructure and catalytic performance of Ni-B amorphous alloy catalyst was investigated. The characterizations of XRD and H2-TPD show that the content of NiB2 increased and the hydrogenation performance of Ni-B first increased and then decreased with increasing n(KBH4)/w(Ni). When n(KBH4 )/n(Ni) = 4, the performance of Ni-B was the best. The addition of Co enhanced the extent of long-range disorder, weakened the strength of Ni-H bond and further enhanced the performance of Ni-B. When Co addition was 0. 6%(molar concentration) , Ni-Co-B catalyst exhibited the best catalytic performance for dinitrotoluene hydrogenation, the conversion of the DNT and the selectivity of TDA were 96. 8% and 100, respectively.关键词
Ni-B非晶态合金/二硝基甲苯/甲苯二胺/n(KBH4)/n(Ni)/Co助剂Key words
Ni-B amorphous alloy catalyst/ dinitrotoluene/ diaminotoluene/ n(KBH4)/n(Ni)/ Co additive分类
化学化工引用本文复制引用
闫少伟,范辉,梁川,于智慧,李忠..Co助剂对Ni-B非晶态催化剂微观结构和加氢性能的影响[J].太原理工大学学报,2012,43(4):415-420,6.基金项目
山西省归国留学人员基金资助项目(20100038) （20100038）
