01755nas a2200181   4500008004100000022001400041245011700055210006900172260007100241300001600312490000800328520099400336100003201330700003201362700003001394700002501424856012401449       2011                        eng d  a1932-744700aKinetics of nitric oxide adsorption on Pd(111) surfaces through molecular beam experiments: a quantitative study0 aKinetics of nitric oxide adsorption on Pd111 surfaces through mo  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcAUG  a15487-154950 v1153 a<p>A detailed kinetic picture derived by molecular beam studies of the adsorption-desorption of the NO/Pd(111) system is presented. Numerical simulations and detailed kinetic analysis show that the precursor state model of adsorption provides a valid picture of the sticking coefficient variation with surface coverage, especially at low temperatures. At higher temperatures, the precursor model gives way to the Langmuir molecular model of adsorption. All the parameters of the precursor state model have been quantified. Temperature programmed desorption (TPD) studies further show that there is a slight repulsive interaction between adsorbed NO molecules and there is only a negligible fraction of dissociated molecules on the surface for temperatures less than 500 K, as the Pd(111) surface is defect free. A Bragg-Williams (BW) lattice gas model with repulsive interactions, within the framework of mean field approach (MFA), is shown to describe the TPD spectra reasonably well.</p>1 aNagarajan, Sankaranarayanan1 aThirunavukkarasu, Kandasamy1 aGopinath, Chinnakonda, S.1 aPrasad, Sudarsan, D.  uhttps://library.ncl.res.in/content/kinetics-nitric-oxide-adsorption-pd111-surfaces-through-molecular-beam-experiments-0