Journal article · Preprint article
Reduction of a Ni/Spinel Catalyst for Methane Reforming
Department of Physics, Technical University of Denmark1
Atomic Scale Materials Modelling, Department of Energy Conversion and Storage, Technical University of Denmark2
Neutrons and X-rays for Materials Physics, Department of Physics, Technical University of Denmark3
Center for Individual Nanoparticle Functionality, Centers, Technical University of Denmark4
Department of Energy Conversion and Storage, Technical University of Denmark5
Imaging and Structural Analysis, Department of Energy Conversion and Storage, Technical University of Denmark6
Norwegian University of Science and Technology7
California Institute of Technology8
Haldor Topsoe AS9
Surface Physics and Catalysis, Department of Physics, Technical University of Denmark10
...and 0 moreA nickel/spinel (Ni/MgAl2O4) 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 – 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.
| Language: | English |
|---|---|
| Publisher: | American Chemical Society |
| Year: | 2015 |
| Pages: | 1424-1432 |
| ISSN: | 19327455 and 19327447 |
| Types: | Journal article and Preprint article |
| DOI: | 10.1021/jp510159m |
| ORCIDs: | Andreasen, Jens Wenzel , Chorkendorff, Ib , Nielsen, Jane Hvolbæk and Vegge, Tejs |
