Record number :
Title of article :
Angular and velocity distributions of desorbing molecules in steady-state NO+CO reaction on Pd(110)
Author/Authors :
Kobal، نويسنده , , Ivan and Kimura، نويسنده , , Kazushi and Ohno، نويسنده , , Yuichi and Matsushima، نويسنده , , Tatsuo، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2000
Pages :
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Abstract :
A Pd(110) surface was exposed to a constant flow of a (NO+CO) mixture. Rates of N2, N2O, and CO2 formation were determined over the surface temperature range from 350 K to 750 K in angular-resolved form in a plane in the [001] direction. N2 desorption showed a two-directional desorption approximated by cos28(θ±41°), while N2O followed a simple cos θ distribution, showing complete accommodation to the surface temperature. CO2 desorption was collimated in the surface normal direction, described by cos15 θ accompanied by a cos θ component. Desorbing N2 molecules were highly energetic as confirmed by velocity distribution measurements in which two components with kinetic energies of 0.46 eV and 0.23 eV were found.
Keywords :
Catalysis , PALLADIUM , nitrogen oxides , Single crystal surfaces , Surface chemical reactions
Journal title :
Surface Science
Link To Document :