Combination of preferential CO oxidation and methanation in hybrid MCR (micro-channel reactor) for CO clean-up
- Authors
- Lee, Chun-Boo; Cho, Sung-Ho; Lee, Dong-Wook; Hwang, Kyung-Ran; Park, Jong-Soo; Kim, Sung-Hyun
- Issue Date
- 15-12월-2014
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- HMCR (Hybrid micro- and mini- channel reactor); CO clean-up; Preferential oxidation of CO; Methanation; Pt/A-type zeolite; Ru/TiO2
- Citation
- ENERGY, v.78, pp.421 - 425
- Indexed
- SCIE
SCOPUS
- Journal Title
- ENERGY
- Volume
- 78
- Start Page
- 421
- End Page
- 425
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/96500
- DOI
- 10.1016/j.energy.2014.10.029
- ISSN
- 0360-5442
- Abstract
- CO in the hydrogen stream must be reduced to extremely low levels, under 10 ppm, because the Pt electrode is detrimentally affected by residual CO in the H-2 stream. Therefore removal of carbon monoxide from the H-2-rich stream during fuel generation from hydrocarbons is a critical challenge, especially for PEMFC (proton exchange membrane fuel cell) applications. Herein, CO an initial concentration of 1.0 vol.% was successfully removed from a H-2-rich stream to a residual level below 10 ppm, within the wide operating temperature range from 92 to 235 degrees C by utilizing a hybrid channel reactor comprising a micro-channel heat exchanger and mini-packed bed reactor. The mini-packed bed reactor contained two kinds of catalysts that promote preferential oxidation and methanation of CO in series. The HMCR (hybrid micro- and mini- channel reactor) offers not only ultimately safe operation but also easy scale-up and is adaptable to mass production of CO clean-up units. (C) 2014 Elsevier Ltd. All rights reserved.
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