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Coking can increase the performance of Keggin H3PW12O40 in the gas phase methanol-to-DME reaction

Abstract

The gas phase dehydration of methanol to dimethylether (DME) nowadays attracts more and more interest as DME is one of the most promising renewable fuels for the future. As catalysts, many studies now use heteropolyacids (HPAs) which have an exceptionally high Brönsted acidity. In the present work, we show that, in contrast to what is generally admitted, H3PW12O40 (most widely used Keggin-type HPA) is not necessarily less active in the methanol reaction when it is covered with coke (carbonaceous deposits). Indeed, in conditions where otherwise only the surface of H3PW12O40 particles is active, the bulk of coked H3PW12O40 might get additionally activated, what leads to a higher methanol conversion than achieved with the non-coked reference sample.

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Publication details

The article was received on 01 Jun 2017, accepted on 26 Aug 2017 and first published on 28 Aug 2017


Article type: Paper
DOI: 10.1039/C7CY01097D
Citation: Catal. Sci. Technol., 2017, Accepted Manuscript
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    Coking can increase the performance of Keggin H3PW12O40 in the gas phase methanol-to-DME reaction

    J. Schnee, L. Fusaro, C. Aprile and E. Gaigneaux, Catal. Sci. Technol., 2017, Accepted Manuscript , DOI: 10.1039/C7CY01097D

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