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Development of Molybdenum Phosphide Catalysts for Higher Alcohol Synthesis from Syngas by Exploiting Support and Promoter Effects

ten Have, I.C., Valle, E., Gallo, A., Snider, J.L., Duyar, Melis S. and Jaramillo, T.F. (2019) Development of Molybdenum Phosphide Catalysts for Higher Alcohol Synthesis from Syngas by Exploiting Support and Promoter Effects Energy Technology, 7 (5), 1801102. pp. 1-14.

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Abstract

Molybdenum phosphide (MoP) catalysts have recently attracted attention due to their robust methanol synthesis activity from CO/CO2. Synthesis strategies are used to steer MoP selectivity toward higher alcohols by investigating the promotion effects of alkali (K) and CO-dissociating (Co, Ni) and non-CO-dissociating (Pd) metals. A systematic study with transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and X-ray absorption spectroscopy (XAS) showed that critical parameters governing the activity of MoP catalysts are P/Mo ratio and K loading, both facilitating MoP formation. The kinetic studies of mesoporous silica-supported MoP catalysts show a twofold role of K, which also acts as an electronic promoter by increasing the total alcohol selectivity and chain length. Palladium (Pd) increases CO conversion, but decreases alcohol chain length. The use of mesoporous carbon (MC) support has the most significant effect on catalyst performance and yields a KMoP/MC catalyst that ranks among the state-of-the-art in terms of selectivity to higher alcohols.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemical and Process Engineering
Authors :
NameEmailORCID
ten Have, I.C.
Valle, E.
Gallo, A.
Snider, J.L.
Duyar, Melis S.m.duyar@surrey.ac.uk
Jaramillo, T.F.
Date : 9 May 2019
DOI : 10.1002/ente.201801102
Copyright Disclaimer : © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Uncontrolled Keywords : Higher alcohol synthesis; Molybdenum phosphide; Promoter effects; Support effects; Syngas conversion
Depositing User : Clive Harris
Date Deposited : 12 Jun 2019 09:09
Last Modified : 12 Jun 2019 09:34
URI: http://epubs.surrey.ac.uk/id/eprint/851975

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