Published January 22, 2015
| Supplemental Material
Journal Article
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Reduction of a Ni/Spinel Catalyst for Methane Reforming
- Creators
- Kehres, Jan
- Andreasen, Jens Wenzel
Abstract
A nickel/spinel (Ni/MgAl_2O_4) catalyst, w(Ni) = 22 wt %, was investigated in situ during reduction with wide-angle X-ray scattering (WAXS) in a laboratory setup and with anomalous small-angle X-ray scattering (ASAXS) at a synchrotron source. Complementary high-resolution transmission electron microscopy (HRTEM) was performed on the fresh catalyst sample. The Ni particles in the fresh catalyst sample were observed to exhibit a Ni/NiO core-shell structure. A decrease of the Ni lattice parameter is observed during the reduction in a temperature interval from 413 to 453 K, which can be related to the reduction of the NiO shell, whereby stress due to the lattice mismatch of Ni and NiO is relieved.
Additional Information
© 2014 American Chemical Society. Received: October 8, 2014; Revised: December 17, 2014; Published: December 17, 2014. We thank Steen Bang, Ove Rasmussen, Torben Kjær, and Jens Borchsenius for maintenance of the equipment and technical support during the implementation of the in situ laboratory setup, Hjalte Sylvest Jacobsen for improvement of the WAXS 1D data transformation, Henning Engelbrecht for guidance regarding LabVIEW and data acquisition during the implementation of the sample gas system, beamline scientist Ulla Vainio from B1 at HASYLAB for all the help provided during our beam time and the Danish National Research Foundation's Center for Individual Nanoparticle Functionality (DNRF54), the Copenhagen Graduate School for Nanoscience and Nanotechnology (C:O:N:T), the Danish Council for Independent Research Natural Sciences (DANSCATT) and Haldor Topsøe A/S for financial support. The Norwegian Research Council is acknowledged for financial funding through the SYNKROTRON program. CINF is funded by the Danish National Research Foundation.Attached Files
Supplemental Material - jp510159m_si_001.pdf
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Additional details
- Eprint ID
- 55667
- DOI
- 10.1021/jp510159m
- Resolver ID
- CaltechAUTHORS:20150310-112642095
- DNRF54
- Danish National Research Foundation, Center for Individual Nanoparticle Functionality
- Copenhagen Graduate School for Nanoscience and Nanotechnology
- Danish Council for Independent Research−Natural Sciences (DANSCATT)
- Haldor Topsøe A/S
- Norwegian Research Council
- Created
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2015-03-11Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field