Abstract
(Graph Presented) Role of small and big gold particles in CO oxidation and methanol selective oxidation to formaldehyde has been studied by the methods of diffuse reflectance electron spectroscopy, XRD, XPS, HRTEM and catalytic testing. By comparison of catalytic and spectroscopic data it was concluded that states Auδ+ with certain effective charge (δ < 1) are active sites in low-temperature CO oxidation as well as in alcohol partial oxidation. These states can be formed under the action of different factors, such as metal-support interaction, redox treatments, and modifying additives. Modifiers stabilizing the ionic states of gold (Ce and Zr oxides) increase the selectivity of the catalyst in alcohol partial oxidation, whereas electron-releasing additions (La and Cs oxides) impair the catalyst properties.
| Original language | English |
|---|---|
| Pages (from-to) | 48-53 |
| Number of pages | 6 |
| Journal | Fuel |
| Volume | 110 |
| DOIs | |
| Publication status | Published - Aug 2013 |
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Keywords
- Active sites
- CO oxidation
- Gold catalysts
- Methanol oxidation
ASJC Scopus subject areas
- Fuel Technology
- Energy Engineering and Power Technology
- Chemical Engineering(all)
- Organic Chemistry
Cite this
Active states of gold in small and big metal particles in CO and methanol selective oxidation. / Pestryakov, A. N.; Lunin, V. V.; Bogdanchikova, N.; Temkin, O. N.; Smolentseva, E.
In: Fuel, Vol. 110, 08.2013, p. 48-53.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Active states of gold in small and big metal particles in CO and methanol selective oxidation
AU - Pestryakov, A. N.
AU - Lunin, V. V.
AU - Bogdanchikova, N.
AU - Temkin, O. N.
AU - Smolentseva, E.
PY - 2013/8
Y1 - 2013/8
N2 - (Graph Presented) Role of small and big gold particles in CO oxidation and methanol selective oxidation to formaldehyde has been studied by the methods of diffuse reflectance electron spectroscopy, XRD, XPS, HRTEM and catalytic testing. By comparison of catalytic and spectroscopic data it was concluded that states Auδ+ with certain effective charge (δ < 1) are active sites in low-temperature CO oxidation as well as in alcohol partial oxidation. These states can be formed under the action of different factors, such as metal-support interaction, redox treatments, and modifying additives. Modifiers stabilizing the ionic states of gold (Ce and Zr oxides) increase the selectivity of the catalyst in alcohol partial oxidation, whereas electron-releasing additions (La and Cs oxides) impair the catalyst properties.
AB - (Graph Presented) Role of small and big gold particles in CO oxidation and methanol selective oxidation to formaldehyde has been studied by the methods of diffuse reflectance electron spectroscopy, XRD, XPS, HRTEM and catalytic testing. By comparison of catalytic and spectroscopic data it was concluded that states Auδ+ with certain effective charge (δ < 1) are active sites in low-temperature CO oxidation as well as in alcohol partial oxidation. These states can be formed under the action of different factors, such as metal-support interaction, redox treatments, and modifying additives. Modifiers stabilizing the ionic states of gold (Ce and Zr oxides) increase the selectivity of the catalyst in alcohol partial oxidation, whereas electron-releasing additions (La and Cs oxides) impair the catalyst properties.
KW - Active sites
KW - CO oxidation
KW - Gold catalysts
KW - Methanol oxidation
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UR - http://www.scopus.com/inward/citedby.url?scp=84879046415&partnerID=8YFLogxK
U2 - 10.1016/j.fuel.2012.10.012
DO - 10.1016/j.fuel.2012.10.012
M3 - Article
VL - 110
SP - 48
EP - 53
JO - Fuel
JF - Fuel
SN - 0016-2361
ER -