Accession Number : AD0623341

Title :   SURFACE STATES IN PURE PALLADIUM.

Descriptive Note : Final rept. for 1 Oct 62-1 Mar 65,

Corporate Author : LAWRENCE UNIV APPLETON WIS DEPT OF CHEMISTRY

Personal Author(s) : Zuehlke,Richard W.

Report Date : JUL 1965

Pagination or Media Count : 17

Abstract : Magnetic susceptibility studies on small crystal (112A 500A) palladium blacks and studies of the interaction of adsorbed nitric oxide with palladium surfaces through magnetic susceptibility and standard adsorption techniques were made. The observed dependence of the magnetic susceptibility of palladium on particle size is consistent with a postulate of a band of electronic surface states lying slightly above the bulk 4-d band. Sorption studies indicate that nitric oxide is adsorbed at room temperatures to slightly more than monolayer coverage in both a physisorbed and a weakly energetic chemisorption state (whose precursor is the physisorbed state). In addition, a complex cooperative electronic rearrangement apparently occurs over a small temperature range around room temperature and at monolayer coverage. (Author)

Descriptors :   (*SURFACE PROPERTIES, PALLADIUM), (*PALLADIUM, MAGNETIC PROPERTIES), PARTICLE SIZE, CRYSTAL LATTICES, ATOMIC ENERGY LEVELS, ADSORPTION, CHEMISORPTION, NITROGEN COMPOUNDS, OXIDES, MONOMOLECULAR FILMS

Distribution Statement : APPROVED FOR PUBLIC RELEASE