|
Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Engineering / Faculty of Engineering >
Peer-reviewed Journal Articles, etc >
In situ FTIR study on the formation and adsorption of CO on alumina-supported noble metal catalysts from H2 and CO2 in the presence of water vapor at high pressures
| Title: | In situ FTIR study on the formation and adsorption of CO on alumina-supported noble metal catalysts from H2 and CO2 in the presence of water vapor at high pressures |
| Authors: | Yoshida, Hiroshi Browse this author →KAKEN DB | | Narisawa, Satomi Browse this author | | Fujita, Shin-ichiro Browse this author →KAKEN DB | | Liu, Ruixia Browse this author | | Arai, Masahiko Browse this author →KAKEN DB |
| Issue Date: | 14-Apr-2012 |
| Publisher: | Royal Society of Chemistry |
| Journal Title: | Physical Chemistry Chemical Physics |
| Volume: | 14 |
| Issue: | 14 |
| Start Page: | 4724 |
| End Page: | 4733 |
| Publisher DOI: | 10.1039/c2cp23590k |
| PMID: | 22395771 |
| Abstract: | The formation and adsorption of CO from CO2 and H2 at high pressures were studied over alumina-supported noble metal catalysts (Pt, Pd, Rh, Ru) by in situ FTIR measurements. To examine the effects of surface structure of supported metal particles and water vapor on the CO adsorption, FTIR spectra were collected at 323 K with untreated and heat (673 K) treated catalysts in the absence and presence of water (H2O, D2O). It was observed that the adsorption of CO occurred on all the metal catalysts at high pressures, some CO species still remained adsorbed under ambient conditions after the high pressure FTIR measurements, and the frequencies of the adsorbed CO species were lower either for the heat treated samples or in the presence of water vapor. It is assumed that the CO absorption bands on atomically smoother surfaces appear at lower frequencies and that water molecules are adsorbed more preferentially on atomically rough surfaces rather than CO species. |
| Rights: | Phys. Chem. Chem. Phys., 2012,14, 4724-4733 - Reproduced by permission of the PCCP Owner Societies |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/51998 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
Submitter: 荒井 正彦
|
