Efficient acid-catalyzed conversion of phenylglyoxal to mandelates on flame-derived silica/Alumina

Zichun Wang; Yijiao Jiang; Alfons Baiker; Jun Huang

doi:10.1021/cs400271e

Efficient acid-catalyzed conversion of phenylglyoxal to mandelates on flame-derived silica/Alumina

Zichun Wang, Yijiao Jiang, Alfons Baiker, Jun Huang^*

^*Corresponding author for this work

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

24 Citations (Scopus)

Abstract

Amorphous, nonporous silica/alumina (SA) made by flame-spray pyrolysis (FSP) efficiently catalyzes the direct conversion of phenylglyoxal (PG) to alkyl mandelates. The SAs exhibited a turnover frequency more than an order of magnitude higher than dealuminated zeolite Y, which hitherto has been considered as the most active solid acid for this reaction. The free diffusion of PG to surface acid sites and rapid removal of mandelate products are proposed to be at the origin of the superior performance of SAs. The recyclability of the catalyst was tested in five repetitive runs and showed no significant loss of catalyst performance.

Original language	English
Pages (from-to)	1573-1577
Number of pages	5
Journal	ACS Catalysis
Volume	3
Issue number	7
DOIs	https://doi.org/10.1021/cs400271e
Publication status	Published - 5 Jul 2013
Externally published	Yes

Keywords

Brønsted acidity
Cannizzaro reaction
flame spray pyrolysis
phenylglyoxal
silica-alumina

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10.1021/cs400271e

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abstract = "Amorphous, nonporous silica/alumina (SA) made by flame-spray pyrolysis (FSP) efficiently catalyzes the direct conversion of phenylglyoxal (PG) to alkyl mandelates. The SAs exhibited a turnover frequency more than an order of magnitude higher than dealuminated zeolite Y, which hitherto has been considered as the most active solid acid for this reaction. The free diffusion of PG to surface acid sites and rapid removal of mandelate products are proposed to be at the origin of the superior performance of SAs. The recyclability of the catalyst was tested in five repetitive runs and showed no significant loss of catalyst performance.",

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AU - Wang, Zichun

AU - Jiang, Yijiao

AU - Baiker, Alfons

AU - Huang, Jun

PY - 2013/7/5

Y1 - 2013/7/5

N2 - Amorphous, nonporous silica/alumina (SA) made by flame-spray pyrolysis (FSP) efficiently catalyzes the direct conversion of phenylglyoxal (PG) to alkyl mandelates. The SAs exhibited a turnover frequency more than an order of magnitude higher than dealuminated zeolite Y, which hitherto has been considered as the most active solid acid for this reaction. The free diffusion of PG to surface acid sites and rapid removal of mandelate products are proposed to be at the origin of the superior performance of SAs. The recyclability of the catalyst was tested in five repetitive runs and showed no significant loss of catalyst performance.

AB - Amorphous, nonporous silica/alumina (SA) made by flame-spray pyrolysis (FSP) efficiently catalyzes the direct conversion of phenylglyoxal (PG) to alkyl mandelates. The SAs exhibited a turnover frequency more than an order of magnitude higher than dealuminated zeolite Y, which hitherto has been considered as the most active solid acid for this reaction. The free diffusion of PG to surface acid sites and rapid removal of mandelate products are proposed to be at the origin of the superior performance of SAs. The recyclability of the catalyst was tested in five repetitive runs and showed no significant loss of catalyst performance.

KW - Brønsted acidity

KW - Cannizzaro reaction

KW - flame spray pyrolysis

KW - phenylglyoxal

KW - silica-alumina

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DO - 10.1021/cs400271e

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JO - ACS Catalysis

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ER -

Efficient acid-catalyzed conversion of phenylglyoxal to mandelates on flame-derived silica/Alumina

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Keywords

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