S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Chemical and Biological Engineering (화학생물공학부) Journal Papers (저널논문_화학생물공학부)
Silicon-based micro-reactor for preferential CO oxidation
- Issue Date
- Chemical Engineering Journal 146 (2009) 105–111
- Micro-reactor ; Preferential CO oxidation ; Selective CO oxidation ; Catalyst coating ; Micro-channel ; Channel design
- 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.
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