Fe-Cu/ZSM-5催化剂及其胺化催化性能研究

制备了一种Fe-Cu/ZSM-5胺化催化剂,考察其在乙醇胺选择性合成哌嗪、三乙烯二胺反应中的催化活性。结果表明,随着Fe、Cu负载量的增加,催化剂表面酸性逐渐向强酸方向位移,总酸量增加,反应转化率提高;Cu负载量对反应转化率及乙二胺选择性的影响相对较弱,但对哌嗪的生成有明显的促进作用;催化反应性能不仅受催化剂酸性的影响,还与负载组分的性质及负载组分与载体间的相互作用有关。

Study of Fe-Cu/ZSM-5 and its amination catalytic property

The synthesis of piperazine(PIP) and triethylene diamine (TEDA)from ethanolamine (MEA) with ammonia over Fe-Cu/ZSM-5 catalyst was investigated.The results showed that when Fe,Cu contents increased，the acid properties were raised,the acid amount and the conversion of MEA increased.The effective in conversion of MEA by Cu content was weaker,but evident to promte synthesis of piperazine.The reaction properties were not only influenced by the surface acid but also influenced by the properties of Fe,Cu.