Publication
Title
Plasma streamer propagation in structured catalysts
Author
Abstract
Plasma catalysis is gaining increasing interest for various environmental applications. Catalytic material can be inserted in different shapes in the plasma, e.g., as pellets, (coated) beads, but also as honeycomb monolith and 3DFD structures, also called 'structured catalysts', which have high mass and heat transfer properties. In this work, we examine the streamer discharge propagation and the interaction between plasma and catalysts, inside the channels of such structured catalysts, by means of a two-dimensional particle-in-cell/Monte Carlo collision model. Our results reveal that plasma streamers behave differently in various structured catalysts. In case of a honeycomb structure, the streamers are limited to only one channel, with low or high plasma density when the channels are parallel or perpendicular to the electrodes, respectively. In contrast, in case of a 3DFD structure, the streamers can distribute to different channels, causing discharge enhancement due to surface charging on the dielectric walls of the structured catalyst, and especially giving rise to a broader plasma distribution. The latter should be beneficial for plasma catalysis applications, as it allows a larger catalyst surface area to be exposed to the plasma.
Language
English
Source (journal)
Plasma sources science and technology / Institute of Physics [Londen] - Bristol, 1992, currens
Publication
Bristol : Institute of Physics , 2018
ISSN
0963-0252
Volume/pages
27 :10 (2018) , 12 p.
Article Reference
105013
ISI
000448131900002
Medium
E-only publicatie
Full text (Publisher's DOI)
Full text (open access)
Full text (publisher's version - intranet only)
UAntwerpen
Faculty/Department
Research group
Project info
Computer modelling and experimental validation of plasmas and plasma- surface interactions, for a deep insight in cryogenic etching (Cryoetch).
Multi-scale modeling of plasma catalysis/
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 10.12.2018
Last edited 19.10.2021
To cite this reference