| Zn-ZSM-5分子筛催化剂上醛氨缩合反应条件的研究 |
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| 引用本文： | 李煦,刘雁,陈永生,张义.Zn-ZSM-5分子筛催化剂上醛氨缩合反应条件的研究[J].工业催化,2010,18(7):54-56. |
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| 作者姓名： | 李煦 刘雁 陈永生 张义 |
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| 作者单位： | (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) |
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| 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。
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| 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 |
Study on reaction condition of aldehyde-ammonia condensation catalyzed by Zn-ZSM-5 zeolite |
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| LI Xu,LIU Yan,CHEN Yongsheng,ZHANG Yi.Study on reaction condition of aldehyde-ammonia condensation catalyzed by Zn-ZSM-5 zeolite[J].Industrial Catalysis,2010,18(7):54-56. |
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| Authors: | LI Xu LIU Yan CHEN Yongsheng ZHANG Yi |
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| Affiliation: | (1.School of Chemical Engineering, Hebei University of Technology, Tianjin 300130, China; 2.CNOOC Tianjin Research & Design Institute of Chemical Industry, Tianjin 300131, China) |
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| Abstract: | 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. |
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| Keywords: | organic synthesis chemistry pyridine base Zn-ZSM-5 zeolite aldehyde-ammonia condensation reaction condition |
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