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Effect of retained chlorine in ENCAT™ 30 catalysts on the development of encapsulated Pd : insights from in situ Pd K, L3 and Cl K-edge XAS

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Newton, Mark E., Nicholls, Rachel, Brazier, John B., Nguyen, Bao N., Mulligan, Christopher J., Hellgardt, Klaus, Barreiro, Elena M., Emerich, Hermann, Hii, King Kuok (Mimi), Snigireva, Irina and Thompson, Paul B. J. (2017) Effect of retained chlorine in ENCAT™ 30 catalysts on the development of encapsulated Pd : insights from in situ Pd K, L3 and Cl K-edge XAS. Catalysis, Structure & Reactivity, 3 (4). pp. 149-156. doi:10.1080/2055074x.2017.1348711

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Official URL: http://dx.doi.org/10.1080/2055074X.2017.1348711

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Abstract

In situ X-ray absorption spectroscopy (XAS) and Pd K, LIII, and Cl K-edges shows that Cl can be present in significant amounts in ENCAT™ 30 catalysts and that it can severely retard Pd nanoparticle (NP) development in flowing solvents. We also show that whilst polymeric encapsulation protects the Pd against solvent induced agglomeration of Pd nanoparticles the evidence suggests it does not prevent the formation PdHx through reaction with the aqeous ethanol solvent, and that, as received, ENCAT™ 30 NP catalysts are not, for the most part, comprised of nanoparticulate Pd0 irrespective of the presence of Cl.

Item Type: Journal Article
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Science > Physics
SWORD Depositor: Library Publications Router
Library of Congress Subject Headings (LCSH): Palladium, Catalysis
Journal or Publication Title: Catalysis, Structure & Reactivity
Publisher: Informa UK Limited
ISSN: 2055-0758
Official Date: 2 August 2017
Dates:
DateEvent
2 August 2017Published
26 June 2017Accepted
Volume: 3
Number: 4
Page Range: pp. 149-156
DOI: 10.1080/2055074x.2017.1348711
Status: Peer Reviewed
Publication Status: Published
Publisher Statement: ** From Crossref via Jisc Publications Router.
Access rights to Published version: Open Access
Funder: Engineering and Physical Sciences Research Council (EPSRC), AstraZeneca (Firm), GlaxoSmithKline, Pfizer Inc.
Grant number: EP/G070172/1, P/L003279/1 (EPSRC)

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