Palladium-Mediated Ethylation of the Imidazolium Cation Monitored In Operando on a Solid Catalyst with Ionic Liquid Layer

作者: Tanja Bauer , Veit Hager , Marc B. Williams , Mathias Laurin , Tibor Döpper

DOI: 10.1002/CCTC.201601222

关键词: Ionic liquidPalladiumDiffuse reflectionReaction mechanismMoietyNuclear magnetic resonance spectroscopyChemistryHeterogeneous catalysisCatalysisInorganic chemistry

摘要: The ionic liquid 1-ethyl-3-methylimidazolium ethylsulfate [EMIM][EtOSO3] was supported on Pd-Al2O3 to yield a solid catalyst with layer (SCILL) material. During the hydrogenation of ethene, it found that ethene incorporated into imidazolium moiety in reaction catalyzed by palladium surface. formation 1,2-diethyl-3-methylimidazolium confirmed ex situ means NMR spectroscopy. Moreover, itself could be monitored in situ diffuse reflection infrared Fourier transformation (DRIFT) A mechanism involving surface carbene species proposed basis analytical data.

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