Angular distributions of desorbing N2 in thermal N2O decomposition on Rh(100)
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The angular distribution of desorbing N2 was studied in the decomposition of N2O(a) on Rh(1 0 0) at 60–140 K by means of angle-resolved temperature-programmed desorption. N2 desorption shows two peaks at around 80 K and 110 K. At low N2O coverage, the former collimates far from the surface normal toward the [0 0 1] direction, whereas at high coverage, the desorption sharply collimates along the surface normal. The adsorption form of N2O and its dissociation were also examined by DFT-GGA calculations. Dissociating N2O is proposed to be lying along the [0 0 1] direction at low coverage and to change to an upright form bonding through the terminal oxygen at high coverage.
- Elsevier B.V.の論文
- 2007-09-15
Elsevier B.V. | 論文
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