Enhanced production of benzyl alcohol in the gas phase continuous hydrogenation of benzaldehyde over Au/Al2O3

Maoshuai Li; Xiaodong Wang; Noémie Perret; Mark A. Keane

doi:10.1016/j.catcom.2013.12.024

Enhanced production of benzyl alcohol in the gas phase continuous hydrogenation of benzaldehyde over Au/Al₂O₃

Maoshuai Li, Xiaodong Wang, Noémie Perret, Mark A. Keane^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

Exclusive hydrogenation of benzaldehyde to benzyl alcohol in gas phase continuous operation (393-413 K, 1 atm) was achieved over Au/Al ₂O₃, Au/TiO₂ and Au/ZrO₂. Synthesis of Au/Al₂O₃ by deposition-precipitation generated a narrower distribution (2-8 nm) of smaller (mean = 4.3 nm) Au particles relative to impregnation (1-21 nm, mean = 7.9 nm) with increased H₂ uptake under reaction conditions and higher benzaldehyde turnover. Switching reactant carrier from ethanol to water resulted in a significant enhancement of selective hydrogenation rate over Au/Al₂O₃ with 100% benzyl alcohol yield, attributed to increased available reactive hydrogen. This response extends to reaction over Au/TiO₂ and Au/ZrO₂.

Original language	English
Pages (from-to)	187-191
Number of pages	5
Journal	Catalysis Communications
Volume	46
DOIs	https://doi.org/10.1016/j.catcom.2013.12.024
Publication status	Published - 10 Feb 2014

Keywords

Au/AlO
Benzaldehyde
Benzyl alcohol
Selective hydrogenation
Water as carrier

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology
General Chemistry

Access to Document

10.1016/j.catcom.2013.12.024

Cite this

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title = "Enhanced production of benzyl alcohol in the gas phase continuous hydrogenation of benzaldehyde over Au/Al2O3",

abstract = "Exclusive hydrogenation of benzaldehyde to benzyl alcohol in gas phase continuous operation (393-413 K, 1 atm) was achieved over Au/Al 2O3, Au/TiO2 and Au/ZrO2. Synthesis of Au/Al2O3 by deposition-precipitation generated a narrower distribution (2-8 nm) of smaller (mean = 4.3 nm) Au particles relative to impregnation (1-21 nm, mean = 7.9 nm) with increased H2 uptake under reaction conditions and higher benzaldehyde turnover. Switching reactant carrier from ethanol to water resulted in a significant enhancement of selective hydrogenation rate over Au/Al2O3 with 100% benzyl alcohol yield, attributed to increased available reactive hydrogen. This response extends to reaction over Au/TiO2 and Au/ZrO2.",

keywords = "Au/AlO, Benzaldehyde, Benzyl alcohol, Selective hydrogenation, Water as carrier",

author = "Maoshuai Li and Xiaodong Wang and No{\'e}mie Perret and Keane, {Mark A.}",

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journal = "Catalysis Communications",

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TY - JOUR

T1 - Enhanced production of benzyl alcohol in the gas phase continuous hydrogenation of benzaldehyde over Au/Al2O3

AU - Li, Maoshuai

AU - Wang, Xiaodong

AU - Perret, Noémie

AU - Keane, Mark A.

PY - 2014/2/10

Y1 - 2014/2/10

N2 - Exclusive hydrogenation of benzaldehyde to benzyl alcohol in gas phase continuous operation (393-413 K, 1 atm) was achieved over Au/Al 2O3, Au/TiO2 and Au/ZrO2. Synthesis of Au/Al2O3 by deposition-precipitation generated a narrower distribution (2-8 nm) of smaller (mean = 4.3 nm) Au particles relative to impregnation (1-21 nm, mean = 7.9 nm) with increased H2 uptake under reaction conditions and higher benzaldehyde turnover. Switching reactant carrier from ethanol to water resulted in a significant enhancement of selective hydrogenation rate over Au/Al2O3 with 100% benzyl alcohol yield, attributed to increased available reactive hydrogen. This response extends to reaction over Au/TiO2 and Au/ZrO2.

AB - Exclusive hydrogenation of benzaldehyde to benzyl alcohol in gas phase continuous operation (393-413 K, 1 atm) was achieved over Au/Al 2O3, Au/TiO2 and Au/ZrO2. Synthesis of Au/Al2O3 by deposition-precipitation generated a narrower distribution (2-8 nm) of smaller (mean = 4.3 nm) Au particles relative to impregnation (1-21 nm, mean = 7.9 nm) with increased H2 uptake under reaction conditions and higher benzaldehyde turnover. Switching reactant carrier from ethanol to water resulted in a significant enhancement of selective hydrogenation rate over Au/Al2O3 with 100% benzyl alcohol yield, attributed to increased available reactive hydrogen. This response extends to reaction over Au/TiO2 and Au/ZrO2.

KW - Au/AlO

KW - Benzaldehyde

KW - Benzyl alcohol

KW - Selective hydrogenation

KW - Water as carrier

U2 - 10.1016/j.catcom.2013.12.024

DO - 10.1016/j.catcom.2013.12.024

M3 - Article

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VL - 46

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JO - Catalysis Communications

JF - Catalysis Communications

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