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Cover Picture: Strong Metal–Support Interactions for Palladium Supported on TiO 2 Catalysts in the Heterogeneous Hydrogenation with Parahydrogen (ChemCatChem 17/2015)
Author(s) -
Kovtunov Kirill V.,
Barskiy Danila A.,
Salnikov Oleg G.,
Burueva Dudari B.,
Khudorozhkov Alexander K.,
Bukhtiyarov Andrey V.,
Prosvirin Igor P.,
Gerasimov Evgeny Y.,
Bukhtiyarov Valerii I.,
Koptyug Igor V.
Publication year - 2015
Publication title -
chemcatchem
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201500910
Subject(s) - palladium , catalysis , spin isomers of hydrogen , chemisorption , hydrogen , x ray photoelectron spectroscopy , chemistry , metal , heterogeneous catalysis , photochemistry , inorganic chemistry , chemical engineering , organic chemistry , engineering
The Front Cover shows that the SMSI (strong metal–support interaction) observed for palladium supported on titania catalysts, along with the formation of a Pd δ+ state during high‐temperature (500 °C) hydrogen treatment, dramatically reduces the pairwise hydrogen addition activity of the Pd/TiO 2 catalyst. In their Communication, Kovtunov et al. demonstrate that formation of the Pd δ+ state by encapsulation of Pd metal nanoparticles, confirmed by XPS and TEM techniques, correlates with the decrease in the number of active sites responsible for pairwise hydrogen addition. Utilization of the PHIP (parahydrogen–induced polarization) technique to investigate the SMSI effects, along with TEM and XPS analysis, demonstrated that PHIP effects are more sensitive to the onset of SMSI effects compared with catalytic activity or chemisorption measurements. More details can be found in the Communication by Kovtunov et al. on page 2581 in Issue 17, 2015 . (DOI: 10.1002/cctc.201500618 ).