金属添加剂对Ni-B非晶态合金催化剂邻氯硝基苯加氢性能的影响

Influence of metal additives on properties of supported Ni-B amorphous alloy catalysts for hydrogenation of o-chloronitrobenzene to o-chloroaniline

研究金属添加剂(Cr、Mn、Fe、Co、Cu、Mo和Zn)负载的Ni-B非晶态合金催化剂催化加氢制备邻氯苯胺的影响。结果表明,适量的Zn、Cr和Mo能提高催化剂的活性和选择性,Mn对催化剂的活性和选择性影响不大,Fe、Co和Cu降低催化剂的活性。这与能和硝基形成多位吸附的单元镍以及电子因素有关。

The influence of metal additives （ Cr, Mn, Fe. Co, Cu, Mo, Zn） on properties of supported Ni- B amorphous alloy catalysts for hydrogenation of o-ehloronitrobenzene to o-chloroaniline was studied. The results showed that activity and selectivity of the catalyst was improved by appropriate amount of Zn, Cr and Mo additives, but lowered by Fe, Co, Cu additives; Mn had little influence on aetivity and selectivity of the catalyst.