Nanocrystalline gold supported on Fe-, Ti- and Ce-modified hexagonal mesoporous silica as a catalyst for the aerobic oxidative esterification of benzyl alcohol

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	https://doi.org/10.1016/j.apcata.2011.02.028
Publication status	Published - 30 Apr 2011

Keywords

Benzyl alcohol
Gold supported catalysts
Mesoporous metallosilicates
Oxidative esterification

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology

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10.1016/j.apcata.2011.02.028

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Parreira, L. A., Bogdanchikova, N., Pestryakov, A., Zepeda, T. A., Tuzovskaya, I., Farías, M. H., & Gusevskaya, E. V. (2011). Nanocrystalline gold supported on Fe-, Ti- and Ce-modified hexagonal mesoporous silica as a catalyst for the aerobic oxidative esterification of benzyl alcohol. Applied Catalysis A: General, 397(1-2), 145-152. https://doi.org/10.1016/j.apcata.2011.02.028

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 › peer-review

Parreira, LA, Bogdanchikova, N, Pestryakov, A, Zepeda, TA, Tuzovskaya, I, Farías, MH & Gusevskaya, EV 2011, 'Nanocrystalline gold supported on Fe-, Ti- and Ce-modified hexagonal mesoporous silica as a catalyst for the aerobic oxidative esterification of benzyl alcohol', Applied Catalysis A: General, vol. 397, no. 1-2, pp. 145-152. https://doi.org/10.1016/j.apcata.2011.02.028

Parreira, Luciana A. ; Bogdanchikova, Nina ; Pestryakov, Alexey ; Zepeda, T. A. ; Tuzovskaya, Inga ; Farías, M. H. ; Gusevskaya, Elena V. / Nanocrystalline gold supported on Fe-, Ti- and Ce-modified hexagonal mesoporous silica as a catalyst for the aerobic oxidative esterification of benzyl alcohol. In: Applied Catalysis A: General. 2011 ; Vol. 397, No. 1-2. pp. 145-152.

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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.",

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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

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