skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Imaging Chemical Aggregation of Ni/NiO Particles from Reduced NiO-YSZ

Abstract

Energy dispersive X-ray spectroscopy (EDS) mapping of nickel oxide yttria-stabilized zirconia (NiO-YSZ) was carried out after various hydrogen reducing and methane steam reforming conditions. Nickel aggregation was visualized after methane steam reforming by correlating Ni K{sub {alpha}} map with scanning transmission electron microscopy (STEM) images. From the reduced O K{sub {alpha}} intensities in the Ni K{sub {alpha}} dominated regions after methane steam reforming, NiO reduction in to Ni can be interpreted. From correlation between Zr K{sub {alpha}} and O K{sub {alpha}} maps, high stability of YSZ was also realized. Examples of NiO-YSZ overlapped particles are considered to discuss chemical imaging of a single particle.

Authors:
Publication Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org.:
USDOE
OSTI Identifier:
1029067
Report Number(s):
PNNL-SA-80890
18191; KP1704020; TRN: US201122%%698
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Electrochemical and Solid-State Letters
Additional Journal Information:
Journal Volume: 14; Journal Issue: 10
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS; 08 HYDROGEN; HYDROGEN; METHANE; NICKEL; NICKEL OXIDES; STABILITY; STEAM; TRANSMISSION ELECTRON MICROSCOPY; X-RAY SPECTROSCOPY; NiO-YSZ; EDS; Ni; aggregation; Chemical; imaging; Environmental Molecular Sciences Laboratory

Citation Formats

Saraf, Laxmikant V. Imaging Chemical Aggregation of Ni/NiO Particles from Reduced NiO-YSZ. United States: N. p., 2011. Web. doi:10.1149/1.3610426.
Saraf, Laxmikant V. Imaging Chemical Aggregation of Ni/NiO Particles from Reduced NiO-YSZ. United States. doi:10.1149/1.3610426.
Saraf, Laxmikant V. Wed . "Imaging Chemical Aggregation of Ni/NiO Particles from Reduced NiO-YSZ". United States. doi:10.1149/1.3610426.
@article{osti_1029067,
title = {Imaging Chemical Aggregation of Ni/NiO Particles from Reduced NiO-YSZ},
author = {Saraf, Laxmikant V.},
abstractNote = {Energy dispersive X-ray spectroscopy (EDS) mapping of nickel oxide yttria-stabilized zirconia (NiO-YSZ) was carried out after various hydrogen reducing and methane steam reforming conditions. Nickel aggregation was visualized after methane steam reforming by correlating Ni K{sub {alpha}} map with scanning transmission electron microscopy (STEM) images. From the reduced O K{sub {alpha}} intensities in the Ni K{sub {alpha}} dominated regions after methane steam reforming, NiO reduction in to Ni can be interpreted. From correlation between Zr K{sub {alpha}} and O K{sub {alpha}} maps, high stability of YSZ was also realized. Examples of NiO-YSZ overlapped particles are considered to discuss chemical imaging of a single particle.},
doi = {10.1149/1.3610426},
journal = {Electrochemical and Solid-State Letters},
number = 10,
volume = 14,
place = {United States},
year = {2011},
month = {7}
}