Particle size and support effects in NO adsorption on model Pt and Rh catalysts
Creators
- 1. Pittsburgh Univ., PA (United States). Dept. of Chemical Engineering
Description
The adsorption of NO on Rh particles supported on ZrO2 (100) and α-Al2O3(0001) and on Pt particles supported on CeO2, α-Al2O3(0001), and the Zn- and O-polar surfaces of ZnO(0001) has been studied using temperature programmed desorption (TPD). For Rh, the support affected the stability of the metal films and the final particle size but made no observable changes in NO adsorption properties. However, the TPD curves were found to be strongly dependent on the particle size for Rh. A low-temperature N2 feature which is observed on bulk metals and large particles was not seen with small Rh particles. For Pt, both support composition and particle size influenced the TPD results. The results for CeO2 and α-Al2O3(0001) were essentially identical, and the changes in the NO TPD curves appear to be due to particle size only. The implications of these results on particle size and support effects in NO reduction catalysis will be discussed
Additional details
Publishing Information
- Publisher
- American Chemical Society.
- Imprint Place
- Washington, DC (United States)
- ISBN
- 0-8412-2455-2
- Imprint Title
- Catalytic control of air pollution
- Imprint Pagination
- 175 p.
- Journal Page Range
- p. 73-82.
Conference
- Title
- 202. national meeting of the American Chemical Society (ACS).
- Dates
- 25-30 Aug 1991.
- Place
- New York, NY (United States).
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 24014048
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ADSORPTION; AIR POLLUTION CONTROL; ALUMINIUM OXIDES; AUGER ELECTRON SPECTROSCOPY; AUTOMOTIVE FUELS; CATALYST SUPPORTS; CATALYTIC CONVERTERS; CATALYTIC EFFECTS; CERIUM OXIDES; CHEMICAL COMPOSITION; NITROGEN OXIDES; PARTICLE SIZE; PLATINUM; RHENIUM; ZINC; ZIRCONIUM OXIDES
- Descriptors DEC
- ALUMINIUM COMPOUNDS; CERIUM COMPOUNDS; CHALCOGENIDES; CONTROL; ELECTRON SPECTROSCOPY; ELEMENTS; EQUIPMENT; FUELS; METALS; NITROGEN COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PLATINUM METALS; POLLUTION CONTROL; POLLUTION CONTROL EQUIPMENT; RARE EARTH COMPOUNDS; SIZE; SORPTION; SPECTROSCOPY; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; ZIRCONIUM COMPOUNDS
Optional Information
- Funding organization
- National Science Foundation, Washington, DC (United States).
- Secondary number(s)
- CONF-910812--.