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Reductive Amination of Ketones with Benzylamine Over Gold Supported on Different Oxides

AuthorsKolobova, Ekaterina; Mäki-Arvela, P.; Pestryakov, Alexey; Pakrieva, Ekaterina; Pascual, Laura CSIC ORCID ; Smeds, A.; Rahkila, J.; Sandberg, T.; Peltonen, J.; Murzin, D.Y.
KeywordsReductive amination
Gold catalysts
Issue Date2019
PublisherKluwer Academic Publishers
CitationCatalysis Letters (2019)
Abstract[EN] Reductive amination of cyclohexanone with benzylamine was investigated at 100 °C under 30 bar hydrogen in toluene with five different gold catalysts prepared by deposition–precipitation method and supported on TiO, LaO/TiO, CeO/TiO, LaO and CeO. Size of metallic gold varied in the range of 2.6–3.6 nm. The best catalysts in reductive amination of cyclohexanone with benzylamine were 4 wt% Au/TiO and 4 wt% Au/CeO/TiO giving 72% and 79% yield of the desired amine. The most acidic and basic catalysts were also unselective and exhibited low activity towards imine hydrogenation. The best catalyst 4 wt% Au/CeO/TiO gave in reductive amination of propiophenone 56% selectivity to the corresponding amine at 20% conversion in 5 h. Graphical Abstract: [Figure not available: see fulltext.]
Publisher version (URL)http://dx.doi.org/10.1007/s10562-019-02917-1
Identifiersdoi: 10.1007/s10562-019-02917-1
issn: 1572-879X
issn: 1011-372X
Appears in Collections:(ICP) Artículos
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