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Formic acid decomposition over palladium based catalysts doped by potassium carbonate

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Show simple item record Jia, Lijun Bulushev, Dmitri A. Ross, Julian R.H. 2016-06-21T11:27:51Z 2016
dc.description peer-reviewed en_US
dc.description.abstract The introduction of potassium carbonate into Pd/Al2O3, Pd/SiO2 and Pd/C catalysts promoted both the catalytic activities and the hydrogen selectivities for the vapor-phase formic acid decomposition, giving values of the turnover frequency (TOF) at 343 K that were 8-33 times higher than those for the undoped samples. The apparent activation energies over all the K-doped samples increased considerably, this showing that there is a difference in the reaction path between the doped and the undoped catalysts. Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS) has been used to gain an understanding of the nature of the species formed in the Pd/SiO2 catalysts during the reaction. This study showed that a considerable fraction of the HCOOH was condensed in the pores of the catalysts and that the introduction of potassium contributed to the formation of buffer-like solution. The existence of mobile formate ions present in the buffer solution and stabilized by K ions in a K-doped catalyst is an essential factor in the promotion of its activity. (C) 2015 Elsevier B.V. All rights reserved. en_US
dc.language.iso eng en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Catalysis Today;259 (2), pp. 453-459
dc.rights This is the author’s version of a work that was accepted for publication in Catalysis Today. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Catalysis Today, 259, (2), pp. 453-459, en_US
dc.subject hydrogen production en_US
dc.subject decomposition of formic acid en_US
dc.subject K-doped Pd catalysts en_US
dc.title Formic acid decomposition over palladium based catalysts doped by potassium carbonate en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US 2016-06-21T11:00:13Z
dc.description.version ACCEPTED
dc.identifier.doi 10.1016/j.cattod.2015.04.008
dc.contributor.sponsor SFI en_US
dc.relation.projectid 06/CP/E007 en_US 2017-05-02
dc.embargo.terms 2017-05-02 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US
dc.internal.rssid 1622644
dc.internal.copyrightchecked Yes
dc.description.status peer-reviewed

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