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 journalArticlepeer-review

20 Citations (Scopus)


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 languageEnglish
Pages (from-to)1573-1577
Number of pages5
JournalACS Catalysis
Issue number7
Publication statusPublished - 5 Jul 2013
Externally publishedYes


  • Brønsted acidity
  • Cannizzaro reaction
  • flame spray pyrolysis
  • phenylglyoxal
  • silica-alumina


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