Abstract
SiO2- and CeO2-promoted Ni catalysts, as an alternative to traditional water gas shift (WGS) catalysts, were studied through various characterization methods. CO removal was enhanced by CeO2 promotion on Ni, but CeO2 affected methanation rather than the WGS reaction. Mobile surface oxygen, a typical property of CeO2, affected the Ni surface properties and weakened the bond strength between C and O atoms of carbon monoxide. On the contrary, in the case of SiO2-promoted Ni catalyst, the SiO2 supplied a hydroxyl group (-OH) to the Ni catalyst resulting in greater selectivity toward the WGS reaction than to methanation. Selectivity to the WGS reaction on the CeO2-promoted Ni catalyst was lower than that on Ni bulk catalyst, while the SiO2-promoted Ni catalyst showed higher selectivity to WGS than both the Ni bulk and CeO2-promoted Ni catalysts.
| Original language | English |
|---|---|
| Pages (from-to) | 3136-3140 |
| Number of pages | 5 |
| Journal | International Journal of Hydrogen Energy |
| Volume | 35 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2010 Apr 1 |
| Externally published | Yes |
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Keywords
- CO removal
- Fuel processor
- Methanation
- Ni bulk catalyst
- WGS
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Fuel Technology
- Condensed Matter Physics
- Energy Engineering and Power Technology
Cite this
SiO2/Ni and CeO2/Ni catalysts for single-stage water gas shift reaction. / Kim, Sung Ho; Chung, Ji Hye; Kim, Yun Tae; Han, Jonghee; Yoon, Sung Pil; Nam, SukWoo; Lim, Tae Hoon; Lee, Ho In.
In: International Journal of Hydrogen Energy, Vol. 35, No. 7, 01.04.2010, p. 3136-3140.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - SiO2/Ni and CeO2/Ni catalysts for single-stage water gas shift reaction
AU - Kim, Sung Ho
AU - Chung, Ji Hye
AU - Kim, Yun Tae
AU - Han, Jonghee
AU - Yoon, Sung Pil
AU - Nam, SukWoo
AU - Lim, Tae Hoon
AU - Lee, Ho In
PY - 2010/4/1
Y1 - 2010/4/1
N2 - SiO2- and CeO2-promoted Ni catalysts, as an alternative to traditional water gas shift (WGS) catalysts, were studied through various characterization methods. CO removal was enhanced by CeO2 promotion on Ni, but CeO2 affected methanation rather than the WGS reaction. Mobile surface oxygen, a typical property of CeO2, affected the Ni surface properties and weakened the bond strength between C and O atoms of carbon monoxide. On the contrary, in the case of SiO2-promoted Ni catalyst, the SiO2 supplied a hydroxyl group (-OH) to the Ni catalyst resulting in greater selectivity toward the WGS reaction than to methanation. Selectivity to the WGS reaction on the CeO2-promoted Ni catalyst was lower than that on Ni bulk catalyst, while the SiO2-promoted Ni catalyst showed higher selectivity to WGS than both the Ni bulk and CeO2-promoted Ni catalysts.
AB - SiO2- and CeO2-promoted Ni catalysts, as an alternative to traditional water gas shift (WGS) catalysts, were studied through various characterization methods. CO removal was enhanced by CeO2 promotion on Ni, but CeO2 affected methanation rather than the WGS reaction. Mobile surface oxygen, a typical property of CeO2, affected the Ni surface properties and weakened the bond strength between C and O atoms of carbon monoxide. On the contrary, in the case of SiO2-promoted Ni catalyst, the SiO2 supplied a hydroxyl group (-OH) to the Ni catalyst resulting in greater selectivity toward the WGS reaction than to methanation. Selectivity to the WGS reaction on the CeO2-promoted Ni catalyst was lower than that on Ni bulk catalyst, while the SiO2-promoted Ni catalyst showed higher selectivity to WGS than both the Ni bulk and CeO2-promoted Ni catalysts.
KW - CO removal
KW - Fuel processor
KW - Methanation
KW - Ni bulk catalyst
KW - WGS
UR - http://www.scopus.com/inward/record.url?scp=77951024800&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77951024800&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2009.09.091
DO - 10.1016/j.ijhydene.2009.09.091
M3 - Article
AN - SCOPUS:77951024800
VL - 35
SP - 3136
EP - 3140
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
SN - 0360-3199
IS - 7
ER -