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Effect of Particle Size and Support Type on Pd Catalysts for 1,3-Butadiene Hydrogenation

Decarolis, D; Lezcano-Gonzalez, I; Gianolio, D; Beale, AM; (2018) Effect of Particle Size and Support Type on Pd Catalysts for 1,3-Butadiene Hydrogenation. Topics in Catalysis , 61 (3-4) pp. 162-174. 10.1007/s11244-018-0887-4. Green open access

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Abstract

Pd nanoparticles supported on SiO 2 , Si 3 N 4 and Al 2 O 3 were studied to examine the effect of particle size and support type on the hydrogenation of 1,3-butadiene. Pd nanoparticles were produced using a reverse micelle method resulting in particles with a remarkably small particle size distribution (σ < < 1 nm). The support type and particle size were observed to affect both catalytic activity and product selectivity. All catalysts showed a decrease of their activity with time on stream, paired with an increase in selectivity to butenes (1-butene and cis/trans-2-butene) from a product stream initially dominated by n-butane. In situ XAFS demonstrated a correlation between the formation of palladium hydride and n-butane production in the early stages (~ 1 h) of reaction. The extent of palladium hydride formation, as well as its depletion with time on stream, was dependent on both particle size and support type. Metallic Pd was identified as the species selective towards the production of butenes.

Type: Article
Title: Effect of Particle Size and Support Type on Pd Catalysts for 1,3-Butadiene Hydrogenation
Open access status: An open access version is available from UCL Discovery
DOI: 10.1007/s11244-018-0887-4
Publisher version: http://doi.org/10.1007/s11244-018-0887-4
Language: English
Additional information: © The Author(s) 2018. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses /by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Keywords: Palladium; Butadiene; Particle size; Hydrogenation
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/10042478
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