Applications of magnetochemistry to the characterization of calcium-nickel-potassium oxide catalysts
Conference
·
OSTI ID:141002
- Lawrence Berkely Laboratory, CA (United States)
Magnetochemical studies, using SQUID magnetometry, have been conducted on calcium-nickel-potassium oxide phases that have been shown to be active in the catalyzed gasification of carbonaceous materials. The research has focused on the chemical state of the paramagnetic nickel(II) oxide system and the paramagnetic oxygen binary compounds with potassium. Studies were performed on various samples of the quaternary metal oxide system that has been synthesized by a variety of routes, including dehydration of hydroxides, thermal decomposition of the parent metal salts (such as nitrates), and the calcining of their parent metal oxides. The magetochemistry is discussed in relationship to the different particles sizes of NiO{sub 3}, the temperature and periods of time of annealing the oxide system, and the synthetic routes used to prepare the compounds. Data are compared to those obtained for the compounds using x-ray photoelectron spectroscopy.
- OSTI ID:
- 141002
- Report Number(s):
- CONF-930304--
- Country of Publication:
- United States
- Language:
- English
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