Abstract
The nature of different Au species supported on hexagonal mesoporous silica has been studied by infrared spectroscopy of adsorbed CO. Experiments revealed existence of the following states of supported gold: neutral metal particles Au°, ions Au+ and a number of partly charged states Au δ+ with different effective charge. Redox pretreatments (vacuum, O2 and H2) of Au/SiO2 at the different temperatures (100, 300 and 500°C) exert a significant effect on the electronic state of supported Au species. The experiments showed high stability of Auδ+ states under all treatments; that may prove their active role in catalytic properties of gold.
| Original language | English |
|---|---|
| Title of host publication | Proceedings - 2012 7th International Forum on Strategic Technology, IFOST 2012 |
| DOIs | |
| Publication status | Published - 2012 |
| Event | 2012 7th International Forum on Strategic Technology, IFOST 2012 - Tomsk, Russian Federation Duration: 18 Sep 2012 → 21 Sep 2012 |
Other
| Other | 2012 7th International Forum on Strategic Technology, IFOST 2012 |
|---|---|
| Country | Russian Federation |
| City | Tomsk |
| Period | 18.9.12 → 21.9.12 |
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Keywords
- CO adsorbtion
- gold catalyst
- mesoporous silica
- redox pretreatments
ASJC Scopus subject areas
- Management of Technology and Innovation
Cite this
Study of electronic state of supported gold nanospecies by IR spectroscopy. / Martynyuk, Oxana Anatolievna; Pestryakov, A.; Bogdanchikova, N.; Tiznado, H.; Zepeda, T. A.; Tuzovskaya, I.
Proceedings - 2012 7th International Forum on Strategic Technology, IFOST 2012. 2012. 6357581.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Study of electronic state of supported gold nanospecies by IR spectroscopy
AU - Martynyuk, Oxana Anatolievna
AU - Pestryakov, A.
AU - Bogdanchikova, N.
AU - Tiznado, H.
AU - Zepeda, T. A.
AU - Tuzovskaya, I.
PY - 2012
Y1 - 2012
N2 - The nature of different Au species supported on hexagonal mesoporous silica has been studied by infrared spectroscopy of adsorbed CO. Experiments revealed existence of the following states of supported gold: neutral metal particles Au°, ions Au+ and a number of partly charged states Au δ+ with different effective charge. Redox pretreatments (vacuum, O2 and H2) of Au/SiO2 at the different temperatures (100, 300 and 500°C) exert a significant effect on the electronic state of supported Au species. The experiments showed high stability of Auδ+ states under all treatments; that may prove their active role in catalytic properties of gold.
AB - The nature of different Au species supported on hexagonal mesoporous silica has been studied by infrared spectroscopy of adsorbed CO. Experiments revealed existence of the following states of supported gold: neutral metal particles Au°, ions Au+ and a number of partly charged states Au δ+ with different effective charge. Redox pretreatments (vacuum, O2 and H2) of Au/SiO2 at the different temperatures (100, 300 and 500°C) exert a significant effect on the electronic state of supported Au species. The experiments showed high stability of Auδ+ states under all treatments; that may prove their active role in catalytic properties of gold.
KW - CO adsorbtion
KW - gold catalyst
KW - mesoporous silica
KW - redox pretreatments
UR - http://www.scopus.com/inward/record.url?scp=84871825919&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84871825919&partnerID=8YFLogxK
U2 - 10.1109/IFOST.2012.6357581
DO - 10.1109/IFOST.2012.6357581
M3 - Conference contribution
SN - 9781467317702
BT - Proceedings - 2012 7th International Forum on Strategic Technology, IFOST 2012
ER -