THE ADSORPTION AND DECOMPOSITION OF NITROUS OXIDE ON RH(110) AND RH(111)

摘要

The adsorption and decomposition of nitrous oxide on the surfaces of Rh(110) and Rh(111) planes have been investigated using molecular beam adsorption and reaction, LEED, and XPS. A clear structural effect was observed. On Rh(110) nitrous oxide adsorbs, at room temperature, with an initial sticking coefficient of around 0.5. The molecules decompose into molecular nitrogen and atomic oxygen, the former is desorbed while the latter is left on the surface. On Rh(111), on the other hand, the surface is rather inert to the incoming nitrous oxide, little adsorption and decomposition can be found at all temperatures studied even when the dosed gas is heated up to 900 K before being introduced onto the surface. References: 30