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Effect of particle size and support type on Pd catalysts for 1,3-butadiene hydrogenation

Decarolis, Donato, Lezcano-Gonzalez, Ines, Gianolio, Diego and Beale, Andrew M. 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

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Abstract

Pd nanoparticles supported on SiO2, Si3N4 and Al2O3 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.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Cardiff Catalysis Institute (CCI)
Publisher: Springer Verlag
ISSN: 1022-5528
Date of First Compliant Deposit: 24 April 2019
Date of Acceptance: 19 January 2018
Last Modified: 25 Apr 2019 12:30
URI: http://orca.cf.ac.uk/id/eprint/121923

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