Dynamics of Pd Subsurface Hydride Formation and Their Impact on the Selectivity Control for Selective Butadiene Hydrogenation Reaction.

Content Provider	Europe PMC
Author	Asedegbega-Nieto, Esther Iglesias-Juez, Ana Di Michiel, Marco Fernandez-Garcia, Marcos Rodriguez-Ramos, Inmaculada Guerrero-Ruiz, Antonio
Editor	Zhang, Genqiang
Copyright Year	2023
Abstract	Structure-sensitive catalyzed reactions can be influenced by a number of parameters. So far, it has been established that the formation of Pd-C species is responsible for the behavior of Pd nanoparticles employed as catalysts in a butadiene partial hydrogenation reaction. In this study, we introduce some experimental evidence indicating that subsurface Pd hydride species are governing the reactivity of this reaction. In particular, we detect that the extent of formation/decomposition of PdHx species is very sensitive to the Pd nanoparticle aggregate dimensions, and this finally controls the selectivity in this process. The main and direct methodology applied to determine this reaction mechanism step is time-resolved high-energy X-ray diffraction (HEXRD).
Journal	Nanomaterials (Basel, Switzerland)
Volume Number	13
PubMed Central reference number	PMC10058484
Issue Number	6
PubMed reference number	36985993
e-ISSN	20794991
DOI	10.3390/nano13061099
Language	English
Publisher	MDPI
Publisher Date	2023-03-19
Access Restriction	Open
Rights License	Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). © 2023 by the authors.
Subject Keyword	palladium catalysts subsurface hydride butadiene partial hydrogenation HEXRD
Content Type	Text
Resource Type	Article
Subject	Chemical Engineering Materials Science