Aqueous phase reforming by platinum catalysts: Effect of particle size and carbon support

Nguyen, Xuan Trung, Kitching, Ella, Slater, Thomas ORCID: https://orcid.org/0000-0003-0372-1551, Pitzalis, Emanuela, Filippi, Jonathan, Oberhauser, Werner and Evangelisti, Claudio 2024. Aqueous phase reforming by platinum catalysts: Effect of particle size and carbon support. Catalysts 14 (11) , 798. 10.3390/catal14110798

Preview

PDF - Published Version Available under License Creative Commons Attribution. Download (7MB) | Preview

Abstract

Aqueous phase reforming (APR) is a promising method for producing hydrogen from biomass-derived feedstocks. In this study, carbon-supported Pt catalysts containing particles of different sizes (below 3 nm) were deposited on different commercially available carbons (i.e., Vulcan XC72 and Ketjenblack EC-600JD) using the metal vapor synthesis approach, and their catalytic efficiency and stability were evaluated in the aqueous phase reforming of ethylene glycol, the simplest polyol containing both C–C and C–O bonds. High-surface-area carbon supports were found to stabilize Pt nanoparticles with a mean diameter of 1.5 nm, preventing metal sintering. In contrast, Pt single atoms and clusters (below 0.5 nm) were not stable under the reaction conditions, contributing minimally to catalytic activity and promoting particle growth. The most effective catalyst PtA/CK, containing a mean Pt NP size of 1.5 nm and highly dispersed on Ketjenblack carbon, demonstrated high hydrogen site time yield (8.92 min−1 at 220 °C) and high stability under both high-temperature treatment conditions and over several recycling runs. The catalyst was also successfully applied to the APR of polyethylene terephthalate (PET), showing potential for hydrogen production from plastic waste.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Chemistry Cardiff Catalysis Institute (CCI)
Additional Information:	License information from Publisher: LICENSE 1: URL: https://creativecommons.org/licenses/by/4.0/, Start Date: 2024-11-07
Publisher:	MDPI
Date of First Compliant Deposit:	2 December 2024
Date of Acceptance:	30 October 2024
Last Modified:	02 Dec 2024 10:30
URI:	https://orca.cardiff.ac.uk/id/eprint/174064

Actions (repository staff only)

Edit Item