Zn-ZSM-5分子筛催化剂上醛氨缩合反应条件的研究  

Study on reaction condition of aldehyde-ammonia condensation catalyzed by Zn-ZSM-5 zeolite

作　　者：李煦[1] 刘雁[1] 陈永生[2] 张义[1] 

机构地区：[1]河北工业大学化工学院,天津300130 [2]中国海油天津化工研究设计院,天津300131

出　　处：《工业催化》2010年第7期54-56,共3页Industrial Catalysis

摘　　要：研究了Zn-ZSM-5分子筛催化剂上的醛氨缩合反应,考察了反应温度、原料配比、反应时间、空速和催化剂寿命等因素对醛氨缩合反应的影响,系统研究了醛氨缩合反应的规律。结果表明,在反应温度450℃、n(甲醛)∶n(乙醛)∶n(氨气)=1∶1∶4和空速(0.6～1.0)h^(-1)条件下,醛氨缩合反应的选择性较高.总收率达85%以上。此条件下,Zn-ZSM-5分子筛催化剂寿命较长,约20 h。Aldehyde-ammonia condensation on Zn-ZSM-5 zeolite catalyst was studied. Effects of reaction temperature, reactants ratio, reaction time, space velocity and catalyst lifetime were investigated. The results showed that a high selectivity to alkyl-pyridine and the total yield of pyridine bases of over 85% were attained under the optimum reaction condition as follows： reaction temperature 450 ℃, normal atmosphere, n （formaldehyde） ： n （ acetaldehyde ）： n （ammonia） = 1： 1： 4 and space velocity （0.6 - 1.0） h^-1. The lifetime of Zn-ZSM-5 catalyst was more than 20 h under the reaction condition.

关 键 词：有机合成化学 吡啶碱 Zn—ZSM-5分子筛 醛氨缩合反应 反应条件 

分 类 号：O643.36[理学—物理化学] O626.32[理学—化学]