Abstract
Abstract The adsorption and decomposition of N 2 H 4 on Pd(100) has been studied by measuring the sticking coefficient and by thermal desorption spectroscopy. Well-defined molecular beam dosing has been employed to limit the interaction of hydrazine to the palladium surface. Desorption of ammonia and hydrazine occurred at peak temperatures between 380 and 420 K. From the adsorption isosteres binding energies of (360 ± 50) meV and (190 ± 40) meV could be derived for NH 3 and N 2 H 4 , respectively. Low pre-exponential factors of ν 0 (NH 3 ) = 10 (1.1 ± 0.5) s −1 and ν 0 (N 2 H 4 ) = 10 (2.8 ± 0.4) s −1 were found. desorption was not detected which allows identification of the relevant surface reactions leading to hydrazine decomposition.
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