Catalytic hydrogenation and hydrodeoxygenation of furfural over Pt(111): A model system for the rational design and operation of practical biomass conversion catalysts

Taylor, M, Jiang, L, Reichert, J, Papageorgiou, A, Beaumont, S, Wilson, K, Lee, A, Barth, J and Kyriakou, G 2017, 'Catalytic hydrogenation and hydrodeoxygenation of furfural over Pt(111): A model system for the rational design and operation of practical biomass conversion catalysts', Journal of Physical Chemistry C, vol. 121, no. 15, pp. 8490-8497.


Document type: Journal Article
Collection: Journal Articles

Title Catalytic hydrogenation and hydrodeoxygenation of furfural over Pt(111): A model system for the rational design and operation of practical biomass conversion catalysts
Author(s) Taylor, M
Jiang, L
Reichert, J
Papageorgiou, A
Beaumont, S
Wilson, K
Lee, A
Barth, J
Kyriakou, G
Year 2017
Journal name Journal of Physical Chemistry C
Volume number 121
Issue number 15
Start page 8490
End page 8497
Total pages 8
Publisher American Chemical Society
Abstract Furfural is a key bioderived platform chemical whose reactivity under hydrogen atmospheres affords diverse chemical intermediates. Here, temperature-programmed reaction spectrometry and complementary scanning tunneling microscopy (STM) are employed to investigate furfural adsorption and reactivity over a Pt(111) model catalyst. Furfural decarbonylation to furan is highly sensitive to reaction conditions, in particular, surface crowding and associated changes in the adsorption geometry: furfural adopts a planar geometry on clean Pt(111) at low coverage, tilting at higher coverage to form a densely packed furfural adlayer. This switch in adsorption geometry strongly influences product selectivity. STM reveals the formation of hydrogen-bonded networks for planar furfural, which favor d ecarbonylation on clean Pt(111) and hydrogenolysis in the presence of coadsorbed hydrogen. Preadsorbed hydrogen promotes furfural hydrogenation to furfuryl alcohol and its subsequent hydrogenolysis to methyl furan, while suppressing residual surface carbon. Furfural chemistry over Pt is markedly different from that over Pd, with weaker adsorption over the former affording a simpler product distribution than the latter; Pd catalyzes a wider range of chemistry, including ring-opening to form propene. Insight into the role of molecular orientation in controlling product selectivity will guide the design and operation of more selective and stable Pt catalysts for furfural hydrogenation. (Chemical Equation Presented).
Subject Catalysis and Mechanisms of Reactions
Keyword(s) Highly selective hydrogenation
liquid-phase
fuel additives
PD Catalysts
Alcohol
Adsorption
PD(111)
Nanoparticles
Chemicals
Chemistry
DOI - identifier 10.1021/acs.jpcc.7b01744
Copyright notice © 2017 American Chemical Society. This is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium,
ISSN 1932-7447
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