Surface science of heterogeneous catalysis
Through studies of model catalysts, the following three reaction parameters for selective molecular scale catalysis have been identified: (1) atomic surface structure; (2) an active carbonaceous deposit; and (3) the proper oxidation states of surface atoms. Each of these reaction parameters are discussed citing examples in order to understand how the catalytic reaction occurs. Two examples which illustrate the importance of the presence of higher oxidation states of transition metal ions at the catalyst surface are discussed. These are carbon monoxide hydrogenation over rhodium and photodissociation of water over reduced SrTiO/sub 3/ surfaces. As a result of combined surface science and catalytic studies on well defined model catalyst systems many of the molecular ingredients of heterogeneous catalysis have been uncovered. Brief descriptions of several attempts to build a new catalyst that incorporate the three reaction parameters are discussed. (ATT)
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6654588
- Report Number(s):
- LBL-14135; CONF-8111128-1; ON: DE83002227
- Country of Publication:
- United States
- Language:
- English
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The surface science of heterogeneous catalysis
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ALKALINE EARTH METAL COMPOUNDS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL PROPERTIES
CHEMICAL REACTIONS
DECOMPOSITION
DEPOSITS
ELEMENTS
HYDROGEN COMPOUNDS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
METALS
METHANATION
MINERALS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
PLATINUM METALS
RHODIUM
STRONTIUM COMPOUNDS
STRONTIUM TITANATES
SURFACE PROPERTIES
SYNTHESIS
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
WATER
ZEOLITES