Abstract
Ag-containing ceramic catalysts modified or unmodified with Zr and Al were studied in selective catalytic oxidation of ethylene glycol and ethanol into the corresponding carbonyl compounds. The influence of phase and chemical composition of ceramic supports prepared by the self-propagating high-temperature synthesis (SHS) on the basis of silicon nitride was considered. The catalysts were characterized by X-ray diffraction, using scanning electron microscope (SEM) equipped with energy dispersive X-ray analysis (EDX) unit, and tested in selective oxidation of ethanol and ethylene glycol into acetaldehyde and glyoxal, respectively. It was shown that the presence of ZrO2 and Si3Al12O9N10 phases in the support composition allowed increasing glyoxal selectivity up to 50% at 87% conversion of glycol. Ag-containing ceramic catalysts also demonstrated high selectivity/activity in ethanol oxidation (95% acetaldehyde selectivity and 100% ethanol conversion at 300 °C), while the support phase composition did not influence the catalytic performance.
| Original language | English |
|---|---|
| Pages (from-to) | 127-132 |
| Number of pages | 6 |
| Journal | Catalysis Today |
| Volume | 203 |
| DOIs | |
| Publication status | Published - 30 Mar 2013 |
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Keywords
- Ag-containing catalyst
- Ethanol
- Ethylene glycol
- Selective oxidation
- Self-propagating high-temperature synthesis
- SiN ceramic support
ASJC Scopus subject areas
- Catalysis
- Chemistry(all)
Cite this
Selective oxidation of alcohols over Ag-containing Si3N 4 catalysts. / Vodyankina, Olga V.; Blokhina, A. S.; Kurzina, I. A.; Sobolev, V. I.; Koltunov, K. Yu; Chukhlomina, L. N.; Dvilis, E. S.
In: Catalysis Today, Vol. 203, 30.03.2013, p. 127-132.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Selective oxidation of alcohols over Ag-containing Si3N 4 catalysts
AU - Vodyankina, Olga V.
AU - Blokhina, A. S.
AU - Kurzina, I. A.
AU - Sobolev, V. I.
AU - Koltunov, K. Yu
AU - Chukhlomina, L. N.
AU - Dvilis, E. S.
PY - 2013/3/30
Y1 - 2013/3/30
N2 - Ag-containing ceramic catalysts modified or unmodified with Zr and Al were studied in selective catalytic oxidation of ethylene glycol and ethanol into the corresponding carbonyl compounds. The influence of phase and chemical composition of ceramic supports prepared by the self-propagating high-temperature synthesis (SHS) on the basis of silicon nitride was considered. The catalysts were characterized by X-ray diffraction, using scanning electron microscope (SEM) equipped with energy dispersive X-ray analysis (EDX) unit, and tested in selective oxidation of ethanol and ethylene glycol into acetaldehyde and glyoxal, respectively. It was shown that the presence of ZrO2 and Si3Al12O9N10 phases in the support composition allowed increasing glyoxal selectivity up to 50% at 87% conversion of glycol. Ag-containing ceramic catalysts also demonstrated high selectivity/activity in ethanol oxidation (95% acetaldehyde selectivity and 100% ethanol conversion at 300 °C), while the support phase composition did not influence the catalytic performance.
AB - Ag-containing ceramic catalysts modified or unmodified with Zr and Al were studied in selective catalytic oxidation of ethylene glycol and ethanol into the corresponding carbonyl compounds. The influence of phase and chemical composition of ceramic supports prepared by the self-propagating high-temperature synthesis (SHS) on the basis of silicon nitride was considered. The catalysts were characterized by X-ray diffraction, using scanning electron microscope (SEM) equipped with energy dispersive X-ray analysis (EDX) unit, and tested in selective oxidation of ethanol and ethylene glycol into acetaldehyde and glyoxal, respectively. It was shown that the presence of ZrO2 and Si3Al12O9N10 phases in the support composition allowed increasing glyoxal selectivity up to 50% at 87% conversion of glycol. Ag-containing ceramic catalysts also demonstrated high selectivity/activity in ethanol oxidation (95% acetaldehyde selectivity and 100% ethanol conversion at 300 °C), while the support phase composition did not influence the catalytic performance.
KW - Ag-containing catalyst
KW - Ethanol
KW - Ethylene glycol
KW - Selective oxidation
KW - Self-propagating high-temperature synthesis
KW - SiN ceramic support
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UR - http://www.scopus.com/inward/citedby.url?scp=84873714480&partnerID=8YFLogxK
U2 - 10.1016/j.cattod.2012.02.056
DO - 10.1016/j.cattod.2012.02.056
M3 - Article
AN - SCOPUS:84873714480
VL - 203
SP - 127
EP - 132
JO - Catalysis Today
JF - Catalysis Today
SN - 0920-5861
ER -