Experimental Study on the Effective Permittivity of the CH3COOC2H5 Saponification Reaction at Microwave Frequency

HUANG Ka-ma; LING Xiao-ping; YANG Xiao-qing; ZHAO Xiang

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Experimental Study on the Effective Permittivity of the CH₃COOC₂H₅ Saponification Reaction at Microwave Frequency

更新时间：2025-07-16

- Experimental Study on the Effective Permittivity of the CH₃COOC₂H₅ Saponification Reaction at Microwave Frequency
- Acta Electronica Sinica Vol. 32, Issue 5, Pages: 833-835(2004)
- 作者机构：
  
  四川大学电子信息学院,四川,成都,610064
- 作者简介：
- 基金信息：
- DOI：
  CLC： O45
- Published：2004
- 稿件说明：
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HUANG Ka-ma, LING Xiao-ping, YANG Xiao-qing, et al. Experimental Study on the Effective Permittivity of the CH₃COOC₂H₅ Saponification Reaction at Microwave Frequency[J]. Acta Electronica Sinica, 2004, 32(5): 833-835.
DOI：

HUANG Ka-ma, LING Xiao-ping, YANG Xiao-qing, et al. Experimental Study on the Effective Permittivity of the CH₃COOC₂H₅ Saponification Reaction at Microwave Frequency[J]. Acta Electronica Sinica, 2004, 32(5): 833-835. DOI：

摘要

微波化学研究中的关键问题之一是对化学反应过程中的介电系数进行跟踪和测量.本文采用开槽同轴谐振探头首次测量了乙酸乙酯皂化反应对微波的反射系数

并用遗传算法获得了微波频率下该反应的等效介电系数.结果发现等效介电系数实部随温度的变化趋势符合L Onsager和Debye理论对极性混合溶液的描述;等效介电系数虚部因极化损耗和欧姆损耗随温度变化而相应变化;而等效介电系数实部随时间的变化与L Onsager极性混合溶液等效介电系数理论的描述相反.

Abstract

One of the most important studies in microwave chemistry is to obtain the effective permittivity of chemical reaction.In this paper

a new type of open-slotted coaxial line sensor was employed to measure the reflection coefficients of reaction system

and then the effective permittivity of reaction was calculated by using genetic algorithm (GA).The results show the changes of the real part of effective permittivity with time agree with L.Onsager's and Debye's theory.The relationship between the imaginary part of effective permittivity and temperature is very complicated because the polarization loss and Ohm's loss vary with temperature at the same time. The changes of the real part of effective permittivity with time are opposite to the results described by L.Onsager's theory.

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Related Institution

The State Key Laboratory of Polymer Materials Science and Engineering,Sichuan University

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