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[1]史晓星,杜旭东,崔群,等.乙醇催化脱水制乙烯反应条件及飞温现象[J].生物加工过程,2009,7(04):14-19.
 SHI Xiao-xing,DU Xu-dong,CUI Qun,et al.Operational conditions and runaway phenomenon of dehydration of ethanol into ethylene[J].Chinese Journal of Bioprocess Engineering,2009,7(04):14-19.
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乙醇催化脱水制乙烯反应条件及飞温现象
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《生物加工过程》[ISSN:1672-3678/CN:32-1706/Q]

卷:
7
期数:
2009年04期
页码:
14-19
栏目:
出版日期:
2009-07-30

文章信息/Info

Title:
Operational conditions and runaway phenomenon of dehydration of ethanol into ethylene
文章编号:
1672-3678(2009)04-0014-06
作者:
史晓星1杜旭东1崔群1王海燕1黄和2
1. 南京工业大学? 化学化工学院,南京 210009;
2. 南京工业大学? 生物与制药工程学院,南京 210009
Author(s):
SHI Xiao-xing1 DU Xu-dong1 CUI Qun1 WANG Hai-yan1 HUANG He2
1. College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China;
2. College of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing 210009, China
关键词:
乙醇脱水乙烯分子筛
分类号:
TQ426; TQ221.21
文献标志码:
A
摘要:
以HZSM-5分子筛为乙醇脱水催化剂,考察了催化剂的硅铝摩尔比和反应工艺条件对乙醇转化率及生成乙烯选择性的影响,分析了反应初期的飞温现象,用X射线衍射(XRD)、环境扫描电镜(SEM)和热分析(TG-DTA)对其催化剂进行了表征。结果表明:硅铝摩尔比为50∶1的HZSM-5催化乙醇脱水制乙烯反应在温度300 ℃、液体质量空速7 h-1时,乙醇转化率大于99.8%,乙烯选择性达99.1%。HZSM-5催化乙醇脱水反应初期的飞温过程生成的聚合物堵塞和覆盖部分催化剂孔道,导致催化剂活性下降和乙烯选择性显著降低,适当降低进料温度可有效控制飞温现象发生。

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2008-09-22
基金项目:国家高技术研究发展计划(863计划)资助项目(2006AA020101)
作者简介:史晓星(1984—),女,江苏扬州人,硕士研究生,研究方向:生物乙醇脱水制乙烯;崔群(联系人),教授,E-mail:cuiqun@njut.edu.cn
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