| 醋酸锌自催化剂表面上的流失机理和流失速度 |
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| 引用本文： | 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(1): 18-21 |
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| 作者姓名： | 孙培勤 乌云高娃 刘大壮 |
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| 作者单位： | 郑州工业大学化工学院, |
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| 基金项目： | Supported by the NationalNatural Science Foundation of China(29170289) |
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| 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)
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| 关 键 词： | 活性炭；醋酸乙烯合成；催化剂失活；醋酸锌 |
| 文章编号： | 1007-6492(2001)01-0018-04 |
| 修稿时间： | 2000-06-18 |
Loss Mechanism and LossRate of Zinc Acetate from the Surface of the Activated Carbon in the Reaction Process |
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| SUN Pei-qin,WUYUN Gao-wa,LIU Da-zhuang. Loss Mechanism and LossRate of Zinc Acetate from the Surface of the Activated Carbon in the Reaction Process[J]. Journal of Zhengzhou University: Eng Sci, 2001, 22(1): 18-21 |
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| Authors: | SUN Pei-qin WUYUN Gao-wa LIU Da-zhuang |
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| Abstract: | In the reaction process of synthesizing vinyl acetate, the loss of the active species Zn(OAc) 2 from the surface of activated carbon results from Zn(OAc) 2 sublimating of gas phase and the blocking inside micropores with condensation products. The sublimation mechanism is that the reaction product vinyl acetate acts with Zn(OAc) 2 to produce a volatilizable complex, then sublimates to gas phase. The overall loss ratio( LR ) can be described as the equation LR =1-exp(- kvt ), which is extensive application of the sublimation rate equation, where v is the flow rate of gas stream, t is reaction time, and k is loss rate constant. |
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| Keywords: | activated carbon deactivation of catalyst synthesis of vinyl acetate zinc acetate |
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