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Open AccessArticle

Hydrotalcite-Supported Ag/Pd Bimetallic Nanoclusters Catalyzed Oxidation and One-Pot Aldol Reaction in Water

1
Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Sho-machi, Tokushima 770-8505, Japan
2
International Center for Materials Nanoarchitectonics, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba Ibaraki 305-0044, Japan
3
Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
*
Authors to whom correspondence should be addressed.
Catalysts 2020, 10(10), 1120; https://doi.org/10.3390/catal10101120
Received: 1 September 2020 / Revised: 23 September 2020 / Accepted: 27 September 2020 / Published: 29 September 2020
(This article belongs to the Special Issue Palladium-Catalyzed Reactions)
A highly active hydrotalcite-supported Ag/Pd bimetallic nanocluster catalyst has been developed by a simple, easy and safe chemical reduction method. The catalyst was characterized by high-resolution transmission electron microscopy (HR-TEM), which revealed very small (3.2 ± 0.7 nm) nanoclusters with a narrow size distribution. The bimetallic Ag/Pd catalyst showed strong cooperation between Ag and Pd for the alcohol oxidation reaction. The developed catalyst provided an efficient and environmentally friendly method for alcohol oxidation and one-pot cross-aldol condensation in water. A broad scope of α,β-unsaturated ketones with good to excellent yields were obtained under very mild conditions. This catalytic system offers an easy preparation method with a simple recovery process, good activity and reusability of up to five cycles without significant loss in the catalytic activity. View Full-Text
Keywords: heterogeneous catalyst; bimetallic catalyst; hydrotalcites; alcohol oxidation; aldol reaction heterogeneous catalyst; bimetallic catalyst; hydrotalcites; alcohol oxidation; aldol reaction
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MDPI and ACS Style

Karanjit, S.; Tamura, A.; Kashihara, M.; Ushiyama, K.; Shrestha, L.K.; Ariga, K.; Nakayama, A.; Namba, K. Hydrotalcite-Supported Ag/Pd Bimetallic Nanoclusters Catalyzed Oxidation and One-Pot Aldol Reaction in Water. Catalysts 2020, 10, 1120. https://doi.org/10.3390/catal10101120

AMA Style

Karanjit S, Tamura A, Kashihara M, Ushiyama K, Shrestha LK, Ariga K, Nakayama A, Namba K. Hydrotalcite-Supported Ag/Pd Bimetallic Nanoclusters Catalyzed Oxidation and One-Pot Aldol Reaction in Water. Catalysts. 2020; 10(10):1120. https://doi.org/10.3390/catal10101120

Chicago/Turabian Style

Karanjit, Sangita; Tamura, Ayumu; Kashihara, Masaya; Ushiyama, Kazuki; Shrestha, Lok K.; Ariga, Katsuhiko; Nakayama, Atsushi; Namba, Kosuke. 2020. "Hydrotalcite-Supported Ag/Pd Bimetallic Nanoclusters Catalyzed Oxidation and One-Pot Aldol Reaction in Water" Catalysts 10, no. 10: 1120. https://doi.org/10.3390/catal10101120

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