Journal article
R. H. Adnan, V. B. Golovko
Catalysis Letters, 2019, p. 449
Catalysis Letters, 2019, p. 449
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APA
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Adnan, R. H., & Golovko, V. B. (2019). Benzyl Alcohol Oxidation Using Gold Catalysts Derived from Au8 Clusters on TiO2. Catalysis Letters, 449.
Chicago/Turabian
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Adnan, R. H., and V. B. Golovko. “Benzyl Alcohol Oxidation Using Gold Catalysts Derived from Au8 Clusters on TiO2.” Catalysis Letters (2019): 449.
MLA
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Adnan, R. H., and V. B. Golovko. “Benzyl Alcohol Oxidation Using Gold Catalysts Derived from Au8 Clusters on TiO2.” Catalysis Letters, 2019, p. 449.
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@article{r2019a,
title = {Benzyl Alcohol Oxidation Using Gold Catalysts Derived from Au8 Clusters on TiO2},
year = {2019},
journal = {Catalysis Letters},
pages = {449},
author = {Adnan, R. H. and Golovko, V. B.}
}
Abstract
Atomically-precise gold clusters have gained attraction in catalysis due to high fraction of low-coordinated gold atoms, unique structural geometry and ligand effect. Phosphine-ligated gold clusters offer an advantage in the light of the labile gold-phosphorous bond for easy ligand removal. Here, heterogeneous gold catalysts were prepared by depositing atomically-precise phosphine-ligated gold clusters, Au8(PPh3)8(NO3)2 onto anatase-phase TiO2 nanoparticles. The catalysts were then calcined under two different conditions: O2 (Au8/TiO2:O2) and O2 followed by H2 (Au8/TiO2:O2–H2) at 200 °C, to dislodge phosphine ligands from the Au core. It was found that Au8/TiO2:O2–H2 catalyst showed a decent catalytic activity in benzyl alcohol oxidation while Au8/TiO2 and Au8/TiO2:O2 were completely inactive. Such results imply that small-size gold clusters (2–3 nm) alone do not always contribute to high catalytic activity of gold catalysts. It is suggested that the presence of NO3− species defines the catalytic activity of supported gold clusters in benzyl alcohol oxidation in the case of these catalysts and reinforces our initial claim in the previous work.Graphical Abstract
