Variation of surface reaction probability with reactant angle of incidence: A molecular beam study of the asymmetry of stepped platinum crystal surfaces for H-H bond breaking

Journal Article · Mon May 02 04:00:00 EDT 1977 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.38.1027· OSTI ID:7317097

Gale, R J; Salmeron, M; Somorjai, G A

A molecular beam of H/sub 2/ and D/sub 2/ was used to investigate the angular dependence of the reaction probability for H/sub 2/-D/sub 2/ exchange (H/sub 2/ + D/sub 2/ ..-->.. 2HD) on the Pt(111) and Pt(S ) -(6(111) x (111)) surfaces. On the stepped surface, a marked increase in the production of HD is observed when the beam of reactants strikes the open side of the step structure. The Pt(111) surface exhibits a smooth decrease in HD production from normal incidence to grazing angles.

• Research Organization: Materials and Molecular Research Division, Lawrence Berkeley Laboratory, and Department of Chemistry, University of California, Berkeley, California 94720
• OSTI ID: 7317097
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 38:18; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
BEAMS
CATALYSIS
CHEMICAL REACTION KINETICS
CRYOGENIC FLUIDS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
CRYSTALS
DEUTERIDES
DEUTERIUM
DEUTERIUM COMPOUNDS
DISSOCIATION
ELEMENTS
FLUIDS
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN DEUTERIDE
HYDROGEN ISOTOPES
ISOTOPES
ISOTOPIC EXCHANGE
KINETICS
LIGHT NUCLEI
MASS SPECTROSCOPY
METALS
MOLECULAR BEAMS
MONOCRYSTALS
NONMETALS
NUCLEI
ODD-ODD NUCLEI
PLATINUM
PLATINUM METALS
REACTION KINETICS
SPECTROSCOPY
STABLE ISOTOPES
SURFACES
TRANSITION ELEMENTS