电磁波作用下化学反应体系极化特性表征  

The Polarization of Chemical Reactions under the Action of Electromagnetic Wave

作　　者：刘兴鹏[1] 洪涛[1] 黄卡玛[1] 

机构地区：[1]四川大学电子信息学院,成都610064

出　　处：《化学通报》2016年第4期377-380,共4页Chemistry

基　　金：国家重点基础研究计划项目(2013CB328900;2013CB328905)资助

摘　　要：近年来,微波促进化学反应引起人们的广泛关注,但是热点和热失控等问题限制了微波化学工业的发展。为了解决这些问题,需要研究电磁波与化学反应体系的相互作用规律。其中,电磁波作用下化学反应体系极化特性的表征是研究电磁波与化学反应体系的相互作用的基础。本文通过改进的SmoluchowskiDebye方程,得到了极性分子反应体系的极化特性的表征。由于电磁波作用下化学反应体系的极化过程实际上是一个线性时变系统的响应,只在一定条件下是马尔可夫过程。本文进一步讨论了极化的时域表征与频域表征的关系以及频域表征的局限性。Microwave-assisted chemical reactions have attracted interest for decades,but hot spots and thermal runaway prevent the further development of microwave heating in chemical engineering. In order to solve these problems,it is needed to study the interaction between electromagnetic wave and chemical reactions. The polarization of the chemical reactions is the basis to investigate the interaction between electromagnetic wave and chemical reactions. The expression of polarization of the polar-molecule reactions is derived with modified Smoluchowski-Debye equation. The polarization of the chemical reactions is actually a response of a linear time varying system,which is a Markov process under certain conditions. The aim of this paper is to discuss the relation between the time domain and the frequency domain representation of the polarization of chemical reactions,along with the limitations of the representation in the frequency domain.

关 键 词：极化 Smoluchowski-Debye方程 响应函数 介电常数 

分 类 号：O643.1[理学—物理化学]