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Materials 2017, 10(12), 1435; doi:10.3390/ma10121435

Enhanced Activity of Au/NiO Nanohybrids for the Reductive Amination of Benzyl Alcohol

1
Department of Chemistry, Università degli Studi di Milano via Golgi 19, 20133 Milan, Italy
2
Canadian Centre of Electron Microscopy and Department of Materials Science and Engineering, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1, Canada
3
Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF103AT, UK
*
Authors to whom correspondence should be addressed.
Received: 16 November 2017 / Revised: 14 December 2017 / Accepted: 15 December 2017 / Published: 16 December 2017
(This article belongs to the Special Issue Polyoxometalate and Nanohybrid Materials)
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Abstract

Gold nanoparticles were prepared by sol immobilization (AuSI) or deposition precipitation (AuDP), then deposited on NiO and commercial TiO2 (P25). The Au/NiO catalysts showed higher activity and yield to the secondary amine, compared to Au/TiO2 catalysts, when tested for the reductive amination of benzyl alcohol with isopropylamine. We attribute this result to a synergistic effect between Au and NiO. Moreover, as a result of the protective effect of the polyvinyl alcohol used in the sol immobilization synthesis, the gold nanoparticles on NiO demonstrate an increased resistance to structural changes during the reaction. This effect results in enhanced catalytic efficiency in terms of activity, and better stability against deactivation. View Full-Text
Keywords: gold; NiO nanohybrids; reductive amination gold; NiO nanohybrids; reductive amination
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Chan-Thaw, C.E.; Chinchilla, L.E.; Sanchez Trujillo, F.J.; Dimitratos, N.; Botton, G.A.; Prati, L.; Villa, A. Enhanced Activity of Au/NiO Nanohybrids for the Reductive Amination of Benzyl Alcohol. Materials 2017, 10, 1435.

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