Premium
Low‐Temperature Catalytic H 2 Oxidation over Au Nanoparticle/TiO 2 Dual Perimeter Sites
Author(s) -
Green Isabel Xiaoye,
Tang Wenjie,
Neurock Matthew,
Yates John T.
Publication year - 2011
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201101612
Subject(s) - dissociation (chemistry) , catalysis , nanoparticle , spectroscopy , atmospheric temperature range , perimeter , activation energy , physics , chemistry , materials science , nanotechnology , thermodynamics , organic chemistry , quantum mechanics , mathematics , geometry
The catalytic reaction of H 2 +O 2 over a Au/TiO 2 catalyst was studied by transmission IR spectroscopy and DFT calculations. A reaction path of O 2 ‐assisted H 2 dissociation at the Au/TiO 2 dual perimeter site was found to proceed through a TiOOH intermediate (see scheme). The calculated barrier range (0.13–0.25 eV) for the sequence of low‐energy steps agree with the experimental E a of 0.22 eV.