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Reduction of a Ni/Spinel Catalyst for Methane Reforming
- Source :
- The Journal of Physical Chemistry C. 119:1424-1432
- Publication Year :
- 2015
- Publisher :
- American Chemical Society (ACS), 2015.
-
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.
- Subjects :
- Materials science
Methane reformer
Spinel
Metallurgy
Non-blocking I/O
Analytical chemistry
chemistry.chemical_element
engineering.material
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Catalysis
Nickel
General Energy
Lattice constant
chemistry
Transmission electron microscopy
engineering
Physical and Theoretical Chemistry
High-resolution transmission electron microscopy
Subjects
Details
- ISSN :
- 19327455 and 19327447
- Volume :
- 119
- Database :
- OpenAIRE
- Journal :
- The Journal of Physical Chemistry C
- Accession number :
- edsair.doi.dedup.....365e530c5bcd34bf021a6471f2f4736b