Abstract
The materials containing gold nanoparticles supported on pure and Ce, Ti, or Fe-modified hexagonal mesoporous silica were prepared and their structural and electronic properties were studied by XRD, TEM, XPS, and N2 adsorption techniques. The materials were shown to be effective heterogeneous catalysts for the liquid-phase aerobic oxidation of benzyl alcohol in methanol solutions. It was found that the modifiers significantly improve the catalytic properties of supported gold particles and allow performing the selective one-pot oxidative esterification of benzyl alcohol resulting in methyl benzoate. The modified catalysts exhibited high activity (turnover frequencies of up to ca. 1000 h-1), selectivity to methyl benzoate (up to 95%), and stability (turnover numbers of up to ca. 4300). Ce and Ti were found to be more effective promoters as compared with Fe in terms of catalyst stability.
| Original language | English |
|---|---|
| Pages (from-to) | 145-152 |
| Number of pages | 8 |
| Journal | Applied Catalysis A: General |
| Volume | 397 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 30 Apr 2011 |
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Keywords
- Benzyl alcohol
- Gold supported catalysts
- Mesoporous metallosilicates
- Oxidative esterification
ASJC Scopus subject areas
- Catalysis
- Process Chemistry and Technology
Cite this
Nanocrystalline gold supported on Fe-, Ti- and Ce-modified hexagonal mesoporous silica as a catalyst for the aerobic oxidative esterification of benzyl alcohol. / Parreira, Luciana A.; Bogdanchikova, Nina; Pestryakov, Alexey; Zepeda, T. A.; Tuzovskaya, Inga; Farías, M. H.; Gusevskaya, Elena V.
In: Applied Catalysis A: General, Vol. 397, No. 1-2, 30.04.2011, p. 145-152.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Nanocrystalline gold supported on Fe-, Ti- and Ce-modified hexagonal mesoporous silica as a catalyst for the aerobic oxidative esterification of benzyl alcohol
AU - Parreira, Luciana A.
AU - Bogdanchikova, Nina
AU - Pestryakov, Alexey
AU - Zepeda, T. A.
AU - Tuzovskaya, Inga
AU - Farías, M. H.
AU - Gusevskaya, Elena V.
PY - 2011/4/30
Y1 - 2011/4/30
N2 - The materials containing gold nanoparticles supported on pure and Ce, Ti, or Fe-modified hexagonal mesoporous silica were prepared and their structural and electronic properties were studied by XRD, TEM, XPS, and N2 adsorption techniques. The materials were shown to be effective heterogeneous catalysts for the liquid-phase aerobic oxidation of benzyl alcohol in methanol solutions. It was found that the modifiers significantly improve the catalytic properties of supported gold particles and allow performing the selective one-pot oxidative esterification of benzyl alcohol resulting in methyl benzoate. The modified catalysts exhibited high activity (turnover frequencies of up to ca. 1000 h-1), selectivity to methyl benzoate (up to 95%), and stability (turnover numbers of up to ca. 4300). Ce and Ti were found to be more effective promoters as compared with Fe in terms of catalyst stability.
AB - The materials containing gold nanoparticles supported on pure and Ce, Ti, or Fe-modified hexagonal mesoporous silica were prepared and their structural and electronic properties were studied by XRD, TEM, XPS, and N2 adsorption techniques. The materials were shown to be effective heterogeneous catalysts for the liquid-phase aerobic oxidation of benzyl alcohol in methanol solutions. It was found that the modifiers significantly improve the catalytic properties of supported gold particles and allow performing the selective one-pot oxidative esterification of benzyl alcohol resulting in methyl benzoate. The modified catalysts exhibited high activity (turnover frequencies of up to ca. 1000 h-1), selectivity to methyl benzoate (up to 95%), and stability (turnover numbers of up to ca. 4300). Ce and Ti were found to be more effective promoters as compared with Fe in terms of catalyst stability.
KW - Benzyl alcohol
KW - Gold supported catalysts
KW - Mesoporous metallosilicates
KW - Oxidative esterification
UR - http://www.scopus.com/inward/record.url?scp=79954419139&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79954419139&partnerID=8YFLogxK
U2 - 10.1016/j.apcata.2011.02.028
DO - 10.1016/j.apcata.2011.02.028
M3 - Article
VL - 397
SP - 145
EP - 152
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
SN - 0926-860X
IS - 1-2
ER -