Thin film ceramic catalyst support materials
- Sandia National Labs., Albuquerque, NM (United States)
- Univ. of New Mexico, Albuquerque, NM (United States)
Hydrous metal oxide materials (HMO) show great potential as ceramic catalyst supports due to a number of interesting properties. First, these materials contain large concentrations of alkali ions, imparting a high, intrinsic ion-exchange capacity which facilitates loading of transition metal cations. Through proper control of ion-exchange conditions high metal loadings can be achieved with essentially atomic dispersion of the metal. The unusual distribution of the transition metal cations on HMO supports after ion-exchange has important implications for the reduction of these cations to the metallic state. Results of studies of the reduction, activation, and catalytic activity of rhodium and nickel cations supported on bulk hydrous titanium oxide (HTO) materials will be presented. A second useful property of HMO catalyst support materials is the ability to form thin films on a wide variety of substrates. This property raises the possibility of forming a thin, catalytic HMO film on another high surface area oxide, thereby allowing the catalytic and structural properties of the catalyst to be engineered independently. Two important challenges in the development of thin film HMO catalysts are the creation of porosity within the films, and the attainment of high coverage of the host substrate by the HMO film. For HTO films, we are addressing these challenges through variation of the properties of the sol-gel precursors used to form the HTO film.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- OSTI ID:
- 140121
- Report Number(s):
- ORNL/FMP-93/1; CONF-9305135-; ON: DE94001091; TRN: 93:003927-0015
- Resource Relation:
- Conference: 7. annual conference on fossil energy materials, Oak Ridge, TN (United States), 11-13 May 1993; Other Information: PBD: Jul 1993; Related Information: Is Part Of Proceedings of the Seventh Annual Conference on Fossil Energy Materials; Fossil Energy AR and TD Materials Program; Cole, N.C.; Judkins, R.R. [comps.]; PB: 402 p.
- Country of Publication:
- United States
- Language:
- English
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