Palladium Promoted Production of Higher Amines from a Lower Amine Feedstock

ABSTRACT: The catalytic (Pd/Al(2)O(3) and Pd/C; mean Pd size 2.5–3.0 nm from (S)TEM analysis) synthesis of di-butylamine (DBA) and tri-butylamine (TBA) from mono-butylamine (MBA) and DBA, respectively, in continuous gas phase operation is demonstrated. Exclusive production of DBA (from MBA) has been...

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Detalles Bibliográficos
Autores principales: Hao, Yufen, Cárdenas-Lizana, Fernando, Keane, Mark A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7089641/
https://www.ncbi.nlm.nih.gov/pubmed/32226263
http://dx.doi.org/10.1007/s10562-016-1902-7
Descripción
Sumario:ABSTRACT: The catalytic (Pd/Al(2)O(3) and Pd/C; mean Pd size 2.5–3.0 nm from (S)TEM analysis) synthesis of di-butylamine (DBA) and tri-butylamine (TBA) from mono-butylamine (MBA) and DBA, respectively, in continuous gas phase operation is demonstrated. Exclusive production of DBA (from MBA) has been established over both catalysts where 453 ≤ T ≤ 523 K (∆E(a) = 79 kJ mol(−1)). Greater activity for Pd/C is associated with higher levels of surface acidity (from NH(3) chemisorption/TPD) and spillover hydrogen (from H(2) TPD). Reaction of DBA over both catalysts when configured in series delivered full selectivity to TBA. Our results establish a novel clean alternative route for the continuous production of higher (secondary and tertiary) amines. GRAPHICAL ABSTRACT: [Image: see text]

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