Ethanol and CO Oxidation over Ag/SiO2 Catalysts: Deep Insight into Formation of Active Surface | Sciact - CRIS-system of Boreskov Institute of Catalysis

Ethanol and CO Oxidation over Ag/SiO2 Catalysts: Deep Insight into Formation of Active Surface Conference Abstracts

Conference

EuropaCat-XIII: 13th European Congress on Catalysis
27-31 Aug 2017 , Florence

Source

13th European Congress on Catalysis
Compilation, 2017.

Output data

Year: 2017, Article number : SS23.10, Pages count : 2

Authors

Dutov V.V. ¹ , Mamontov G.V. ¹ , Zaykovskii V.I. ² , Izaak T.I. ¹ , Vodyankina O.V. ¹

Affiliations

1	Tomsk State University, 36 Lenin ave., Tomsk, Russia 634050
2	Boreskov Institute of Catalysis SB RAS, 5 Ac. Lavrenteva ave., Novosibirsk, Russia 630090

The Ag/SiO2 catalysts were prepared on the basis of silica with different concentrations of OH-groups and investigated in selective oxidation of ethanol and low-temperature CO oxidation. It was stated that the dispersion, structure of silver nanoparticles and their reaction ability towards oxygen and CO depended on the OH/Ag ratio (molar ratio between amount of OH-groups on the silica surface and silver in the prepared catalysts). A volcano-like dependence of the catalytic properties of Ag/SiO2 catalysts in the low-temperature CO oxidation on the OH/Ag ratio is observed. Moreover, two types of active sites were observed, however, only one of them was active at ambient conditions. The effect of OH/Ag ratio on the catalytic properties of the Ag/SiO2 catalysts in the ethanol oxidation is negligible due to similar amount of active sites. It was shown by DRIFTS that ethanol oxidation occurs at the silver-silica interface.

Dutov V.V. , Mamontov G.V. , Zaykovskii V.I. , Izaak T.I. , Vodyankina O.V.
Ethanol and CO Oxidation over Ag/SiO2 Catalysts: Deep Insight into Formation of Active Surface
In compilation 13th European Congress on Catalysis. 2017. – C.302-303.

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