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Silicon-based micro-reactor for preferential CO oxidation

Cited 20 time in Web of Science Cited 20 time in Scopus
Issue Date
2009-01-15
Publisher
Elsevier
Citation
Chemical Engineering Journal 146 (2009) 105–111
Keywords
Micro-reactorPreferential CO oxidationSelective CO oxidationCatalyst coatingMicro-channelChannel design
Abstract
A silicon-based micro-reactor was fabricated using a micro-electromechanical system (MEMS) process
and silicon micromachining technology (SMT) to allow preferential CO oxidation (PrOx) to be applied
to compact portable devices. To design the micro-PrOx reactor, the effects of channel length, channel
width, channel array, and O2 content in the reactant gas on the CO conversion and selectivity for CO
were investigated. The single micro-PrOx reactor required an O2 concentration four times higher than the
theoretical quantity for a complete conversion of 1% CO into CO2. The optimum operating temperature
to obtain high CO conversion, by suppressing the reverse water–gas shift (r-WGS) reaction, depended
considerably on the channel lengths of the micro-reactor rather than on the channel widths or the channel
arrays. The micro-PrOx reactor showed 99.4% conversion of COand 44.14% selectivity for COat 260 ◦Cwhen
operating with 1% CO, 50% H2, 35% CO2, N2 (balance), and 2% O2.
ISSN
1385-8947
Language
English
URI
https://hdl.handle.net/10371/68308
DOI
https://doi.org/10.1016/j.cej.2008.08.037
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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