CIESC Journal ›› 2019, Vol. 70 ›› Issue (S1): 177-181.doi: 10.11949/j.issn.0438-1157.20181405

• Energy and environmental engineering • Previous Articles     Next Articles

Spectrum changes of electromagnetic pluses in chemical reactions

Xingpeng LIU(),Dandan YAN   

  1. College of Network and Communication Engineering, Chengdu Technological University, Chengdu 611730, Sichuan, China
  • Received:2018-11-23 Revised:2018-12-26 Online:2019-03-31 Published:2019-04-26
  • Contact: Xingpeng LIU E-mail:lxp_herb@163.com

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Abstract:

Microwave-assisted chemical reactions have been attractive. However, the problems of inhomogeneous heating have been preventing the further application of microwaves in chemical engineering. In order to solve these problems, the characteristics of electromagnetic wave propagation in chemical reactions need to be investigated. As a typical time-varying and non-equilibrium system, the dielectric properties of chemical reactions change during chemical reactions. Moreover, the frequency of the electromagnetic waves in the reactions can be influent by the variation of dielectric properties. In this paper, based on the polarization characteristics of the simple polar-molecule reactions, the propagation of electromagnetic pulses in the reactions with different reaction rates is simulated to disclose the effects of the time-varying and dispersive characteristics on the spectrum of electromagnetic pluses. For slow reactions, the time-varying characteristics are negligible, and the dispersive characteristics leads to the spectrum variation. For fast reactions, the time-varying and dispersive characteristics make the spectrum changes of electromagnetic pluses.

Key words: chemical reactions, simple polar-molecule reactions, spectrum changes

CLC Number: 

  • TN 015

Fig.1

Input and output of modulated Gaussian pulse in general dispersive media"

Fig.2

Output electric field in reactions when concentrations of Xi decrease"

Fig.3

Output electric field in reactions when concentrations of Xi increase"

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