Acid-Promoter-Free Ethylene Methoxycarbonylation over Ru-Clusters/Ceria: The Catalysis of Interfacial Lewis Acid-Base Pair

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Date: Mar. 21, 2018
From: Journal of the American Chemical Society(Vol. 140, Issue 11)
Publisher: American Chemical Society
Document Type: Report
Length: 80 words

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Abstract :

The article reports the high activity of nanostructured Ru/ceria (Ru-clusters/ceria) in the ethylene methoxycarbonylation (EMC) reaction in the absence of acid promoter.The interfacial Lewis acid-base pair [Ru-O-Ce-Vo], which consists of acidic Ce-Vo (oxygen vacancy) site and basic interfacial oxygen of Ru-O-Ce linkage, acts as active site for the dissociation of methanol and the subsequent transfer of hydrogen to the activated ethylene.The combination of 1H MAS NMR, pyridine-IR and DFT calculations reveals the hydrogen species derived from methanol contains Bronsted acidity.

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Gale Document Number: GALE|A540533193