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Nano-flowered Ce@MOR hybrids with modulated acid properties for the vapor-phase dehydration of 1,3-butanediol into butadiene

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Abstract

A series of Ce@MOR hybrids based on CeOx nanoparticles (1–2.5 nm) encapsulated in mordenite exhibiting a genuine flower-like morphology were prepared by simple hydrothermal synthesis. The cerium content in the catalysts could be easily tuned by adjusting the Si : Al : Ce composition of the preformed gel, affecting the textural properties and the density of acid sites of the catalysts. The genesis of acid sites with medium strength was directly correlated to the catalytic activity for the vapor-phase dehydration of 1,3-butanediol into butadiene. A Ce@MOR hybrid with a Si/Ce atomic ratio of 50 displayed a superior activity and selectivity compared to the parent MOR at a comparable Si/Al atomic ratio (10), as well as to control Ce-MOR catalysts post-synthesized by incipient wetness impregnation from the parent mordenite. A higher density of Brønsted acid sites with medium strength induced by encapsulated CeOx nanoparticles was argued as the main reason for such an enhanced catalytic performance.

Graphical abstract: Nano-flowered Ce@MOR hybrids with modulated acid properties for the vapor-phase dehydration of 1,3-butanediol into butadiene

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Publication details

The article was received on 21 Jul 2017, accepted on 16 Aug 2017 and first published on 16 Aug 2017


Article type: Paper
DOI: 10.1039/C7GC02223A
Citation: Green Chem., 2017, Advance Article
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    Nano-flowered Ce@MOR hybrids with modulated acid properties for the vapor-phase dehydration of 1,3-butanediol into butadiene

    L. Fang, F. Jing, J. Lu, B. Hu and M. Pera-Titus, Green Chem., 2017, Advance Article , DOI: 10.1039/C7GC02223A

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