Abstract
Incorporation of both Cu and Ni together into the crystalline lattice of Fe2O3 results in a significant increase in the catalytic activity and also suppresses the methanation reaction in the high-temperature water-gas shift (HT-WGS) reaction. CuNi/Fe2O3 exhibited the highest CO conversion with negligible CH4 selectivity at the extremely high GHSV of 101 000 h-1 (XCO = 85% at 400 °C). The high activity of CuNi/Fe2O3 catalyst is mainly due to the increase in the lattice strain and the decrease in the binding energy of lattice oxygen. In addition, X-ray photoelectron spectroscopy (XPS) results provide direct evidence for the formation of surface CuNi alloy, which plays a critical role in suppressing the methanation reaction. The detailed characterization by powder X-ray diffraction (XRD), XPS, BET, and H2 temperature-programmed reduction (TPR) techniques was used to understand the role of dopants on host iron oxides in the enhancement of catalytic activity for HT-WGS reaction.
| Original language | English |
|---|---|
| Pages (from-to) | 2752-2760 |
| Number of pages | 9 |
| Journal | Catalysis Science and Technology |
| Volume | 5 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2015 May 1 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Catalysis
Cite this
}
Hydrogen production by the water-gas shift reaction using CuNi/Fe2O3 catalyst. / Jha, Ajay; Jeong, Dae Woon; Shim, Jae Oh; Jang, Won Jun; Lee, Yeol Lim; Rode, Chandrashekhar V.; Roh, Hyun Seog.
In: Catalysis Science and Technology, Vol. 5, No. 5, 01.05.2015, p. 2752-2760.Research output: Contribution to journal › Article
TY - JOUR
T1 - Hydrogen production by the water-gas shift reaction using CuNi/Fe2O3 catalyst
AU - Jha, Ajay
AU - Jeong, Dae Woon
AU - Shim, Jae Oh
AU - Jang, Won Jun
AU - Lee, Yeol Lim
AU - Rode, Chandrashekhar V.
AU - Roh, Hyun Seog
PY - 2015/5/1
Y1 - 2015/5/1
N2 - Incorporation of both Cu and Ni together into the crystalline lattice of Fe2O3 results in a significant increase in the catalytic activity and also suppresses the methanation reaction in the high-temperature water-gas shift (HT-WGS) reaction. CuNi/Fe2O3 exhibited the highest CO conversion with negligible CH4 selectivity at the extremely high GHSV of 101 000 h-1 (XCO = 85% at 400 °C). The high activity of CuNi/Fe2O3 catalyst is mainly due to the increase in the lattice strain and the decrease in the binding energy of lattice oxygen. In addition, X-ray photoelectron spectroscopy (XPS) results provide direct evidence for the formation of surface CuNi alloy, which plays a critical role in suppressing the methanation reaction. The detailed characterization by powder X-ray diffraction (XRD), XPS, BET, and H2 temperature-programmed reduction (TPR) techniques was used to understand the role of dopants on host iron oxides in the enhancement of catalytic activity for HT-WGS reaction.
AB - Incorporation of both Cu and Ni together into the crystalline lattice of Fe2O3 results in a significant increase in the catalytic activity and also suppresses the methanation reaction in the high-temperature water-gas shift (HT-WGS) reaction. CuNi/Fe2O3 exhibited the highest CO conversion with negligible CH4 selectivity at the extremely high GHSV of 101 000 h-1 (XCO = 85% at 400 °C). The high activity of CuNi/Fe2O3 catalyst is mainly due to the increase in the lattice strain and the decrease in the binding energy of lattice oxygen. In addition, X-ray photoelectron spectroscopy (XPS) results provide direct evidence for the formation of surface CuNi alloy, which plays a critical role in suppressing the methanation reaction. The detailed characterization by powder X-ray diffraction (XRD), XPS, BET, and H2 temperature-programmed reduction (TPR) techniques was used to understand the role of dopants on host iron oxides in the enhancement of catalytic activity for HT-WGS reaction.
UR - http://www.scopus.com/inward/record.url?scp=84929430050&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84929430050&partnerID=8YFLogxK
U2 - 10.1039/c5cy00173k
DO - 10.1039/c5cy00173k
M3 - Article
AN - SCOPUS:84929430050
VL - 5
SP - 2752
EP - 2760
JO - Catalysis Science and Technology
JF - Catalysis Science and Technology
SN - 2044-4753
IS - 5
ER -