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Hydrogen: Unraveling the Dynamic Nanoscale Reducibility (Ce 4+ → Ce 3+ ) of CeO x –Ru in Hydrogen Activation (Adv. Mater. Interfaces 18/2015)
Author(s) -
Höcker Jan,
Menteş Tevfik Onur,
Sala Alessandro,
Locatelli Andrea,
Schmidt Thomas,
Falta Jens,
Senanayake Sanjaya D.,
Flege Jan Ingo
Publication year - 2015
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201570089
Subject(s) - materials science , hydrogen , nanoscopic scale , analytical chemistry (journal) , chemistry , crystallography , nanotechnology , organic chemistry
When exposed to a reactive H 2 environment, a cerium oxide model catalyst is shown to undergo complex structural transformations, resulting in a heterogeneous composition. J. I. Flege and co‐workers illustrate this process in article number 1500314 with electron microscopy images showing triangular ceria particles at different stages of reduction by hydrogen, leading to the production of water. In situ and real‐time micro‐spectroscopy and diffraction reveal the nanoscale coexistence of crystallographically‐ordered ceria phases, with profound implications on the nature of the reduction and the mechanism for H 2 scission.