A transition-metal-free hydrogenation catalyst: Pore-confined sodium alanate for the hydrogenation of alkynes and alkenes

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• 作者：Peter L. Bramwell^a ; Jinbao Gao^a ; Bernd de Waal^a ; Krijn P. de Jong^a ; Robertus J.M. Klein Gebbink^b ; Petra E. de Jongh^a ; ^{P.E.dejongh@uu.nl}
• 关键词：XRD ; X-ray diffraction ; SEM ; scanning electron microscopy ; EDX ; energy dispersive X-ray spectroscopy ; TPD ; temperature programmed desorption ; TCD ; thermal conductivity detector ; DPA ; diphenylacetylene ; PEG ; polyethylene glycol ; GC ; gas chromatography
• 刊名：Journal of Catalysis
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：344
• 期：Complete
• 页码：129-135
• 全文大小：1236 K
• 卷排序：344

文摘

A NaAlH4/C nanocomposite is active in alkene and alkyne hydrogenation at 150 °C, 100 bar H2. The catalyst is active in the hydrogenation of a number of substrates with different functionalities. A toluene solvent yields a lower activity than cyclohexane due to competitive adsorption. Isomerization from cis- to trans-stilbene is catalyzed by the catalyst. Pre-treatment under an argon atmosphere gives a higher selectivity towards cis-stilbene.