[1]孙培勤,乌云高娃,刘大壮..醋酸锌自催化剂表面上的流失机理和流失速度[J].郑州大学学报(工学版),2001,22(01):18-21.[doi:10.3969/j.issn.1671-6833.2001.01.005]
　SUN Peiqin,Dark Cloud Gaowa,Liu Dazhuang.Loss mechanism and rate of zinc acetate from the catalyst surface[J].Journal of Zhengzhou University (Engineering Science),2001,22(01):18-21.[doi:10.3969/j.issn.1671-6833.2001.01.005]

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醋酸锌自催化剂表面上的流失机理和流失速度()

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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

22卷

期数:

2001年01期

页码:

18-21

栏目:

出版日期:

1900-01-01

文章信息/Info

Title:

Loss mechanism and rate of zinc acetate from the catalyst surface

作者:

孙培勤; 乌云高娃; 刘大壮.

郑州工业大学化工学院,, 郑州工业大学化工学院,, 郑州工业大学化工学院,

Author(s):

SUN Peiqin; Dark Cloud Gaowa; Liu Dazhuang

关键词:

活性炭;  醋酸乙烯合成;  催化剂失活;  醋酸锌

Keywords:

activated carbon;  vinyl acetate synthesis;  catalyst inactivation;  Zinc acetate

DOI:

10.3969/j.issn.1671-6833.2001.01.005

文献标志码:

A

摘要:

乙炔和醋酸合成醋酸乙烯的反应过程中，催化剂的失活，是由催化剂中的醋酸锌Zn (OAc)2从活性炭表面上升华到气相中以及被凝聚物堵在微孔内部而引起的.升华机理是反应产物与Zn (OAc)2作用生成挥发性络合物再升华到气相中去.总流失速度可用LR=1-exp (-kvt)来描述，这是升华速度方程式的应用推广.式中v为气流速度，t为反应时间，k为速度常数.

Abstract:

During the reaction of acetylene and acetic acid to synthesize vinyl acetate, the inactivation of the catalyst is caused by the sublimation of zinc acetate Zn (OAc)2 in the catalyst from the surface of activated carbon into the gas phase and the blockage of the condensate in the micropores. The sublimation mechanism is that the reaction product reacts with Zn (OAc)2 to form volatile complexes, which are then sublimated into the gas phase. The total loss velocity can be described by LR=1-exp (-kvt), which is the application generalization of the sublimation velocity equation. where v is the velocity of the airflow, t is the reaction time, and k is the velocity constant.

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