Sharma, V.
, Crozier, P.
, Sharma, R.
and Adams, J.
(2012),
Direct Observation of Hydrogen Spillover in Ni-Loaded Pr-Doped Ceria, Catalysis Today, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=908886
(Accessed October 11, 2025)
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Direct Observation of Hydrogen Spillover in Ni-Loaded Pr-Doped Ceria
Published
Author(s)
Vaneet Sharma, Peter A. Crozier, , James B. Adams
Abstract
Hydrogen-spillover in Ni-loaded Pr-doped ceria (PDC) was directly observed using an environmental transmission electron microscope (ETEM). Localized reduction of ceria in a H2 atmosphere was observed and attributed to gas-Ni-ceria interactions at the three phase boundary. The spatial extent of the localized reduction zones were experimentally determined and correlated with particle size. The spillover mechanism is discussed in terms of surface diffusion properties of atomic hydrogen and oxygen species.Citation
Catalysis Today
Volume
180
Issue
1
Pub Type
Journals
Download Paper
Keywords
In situ, Pr-doped ceria, reduction zone, hydrogen spillover, ETEM
Citation
Issues
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Created January 16, 2012, Updated October 12, 2021