Plasma-catalysis: Is it just a question of scale?

作     者：J.Christopher Whitehead 

作者机构：School of ChemistryThe University of ManchesterManchester M13 9PLUK 

出 版 物：《Frontiers of Chemical Science and Engineering》 (化学科学与工程前沿（英文版）)

年 卷 期：2019年第13卷第2期

页      面：264-273页

核心收录：

学科分类：08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

主　　题：plasma catalysis plasma-activated catalysis non-thermal plasma CO2 conversion 

摘      要：The issues of describing and understanding the changes in performance that result when a catalyst is placed into plasma are discussed. The different chemical and physical interactions that result and how their combination might produce beneficial results for the plasma-catalytic processing of different gas streams are outlined with particular emphasis being placed on the different range of spatial and temporal scales that must be considered both in experiment and modelling. The focus is on non-thermal plasma where the lack of thermal equilibrium creates a range of temperature scales that must be considered. This contributes in part to a wide range of inhomogeneity in different properties such as species concentrations and electric fields that must be determined experimentally by in situ methods and be incorporated into modelling. It is concluded that plasmacatalysis is best regarded as conventional catalysis perturbed by the presence of a discharge, which modifies its operating conditions, properties and outcomes often in a very localised way. The sometimes used description plasma-activated catalysis is an apt one.