Nitrogen spill-over effect in the palladium-tungsten system

The system N 2-Pd-W has been used as a model of a bimetallic catalyst for ammonia synthesis. The role of the individual components can be fairly well seen in this system: tungsten is responsible for trapping and dissociation of nitrogen molecules, and palladium for hydrogenation of the chemisorbed s...

Full description

Saved in:
Bibliographic Details
Published inApplied surface science Vol. 25; no. 1; pp. 107 - 117
Main Authors Knor, Z., Edelmann, Ch, Rudny, J., Stachurski, J.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 01.02.1986
Elsevier Science
Subjects
Catalysis
Catalysts: preparations and properties
Catalytic reactions
Chemistry
Exact sciences and technology
General and physical chemistry
General. Nomenclature, chemical documentation, computer chemistry
Theory of reactions, general kinetics
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Mixed catalyst
Ammonia
Palladium
Adsorption
Hydrogen
Tungsten
Online AccessGet full text

Cover

More Information
Summary:The system N 2-Pd-W has been used as a model of a bimetallic catalyst for ammonia synthesis. The role of the individual components can be fairly well seen in this system: tungsten is responsible for trapping and dissociation of nitrogen molecules, and palladium for hydrogenation of the chemisorbed species. The transfer of reactant particles from trapping centers to reaction sites - i.e. in our case the spill-over of nitrogen from tungsten to the palladium surface - has been studied by means of a field emission microscope (FEM). A field ion microscope (FIM) has been used for the sample characterization.
ISSN:0169-4332
1873-5584
DOI:10.1016/0169-4332(86)90029-2