Accession Number : ADA191512

Title :   The Application of SERS (Surface Enhanced Raman Scattering) to Study Surface Oxidation Reactions of Phosphonates.

Descriptive Note : Technical rept.,

Corporate Author : AMHERST COLL MA DEPT OF CHEMISTRY

Personal Author(s) : Dorain, Paul B

PDF Url : ADA191512

Report Date : 15 Feb 1988

Pagination or Media Count : 9

Abstract : Surface enhanced Raman scattering has developed into an important spectroscopic tool in the identification of adsorbates on silver, copper, or gold under in situ conditions. This paper describes the first use of this technique to study the kinetics of surface enhanced catalyzed chemical reactions. The reaction of NO2 gas with Ag powder is shown to proceed through the formation of AgNO2 which autocatalytically decomposes into AgNO3, NO, and free Ag which forms Ag microstructures. Recent experiments to elucidate the reactions of DMMP at these catalytically active sites show that H2PO4 and HPO4 are formed on the surface at room temperature. The use of dynamically produced active Ag sites as active filters for phosphonates is discussed. Keywords: Surface Enhanced Raman Scattering (SERS), Phosphonates, Kinetics, Catalysis.

Descriptors :   *PHOSPHONATES, *OXIDATION, *RAMAN SPECTROSCOPY, CATALYSIS, COPPER, KINETICS, LIGHT SCATTERING, MICROSTRUCTURE, OXIDATION REDUCTION REACTIONS, RAMAN SPECTRA, SILVER, SPECTROSCOPY, SURFACE REACTIONS, SURFACE TEMPERATURE, SURFACES, NITROGEN OXIDES, SILVER COMPOUNDS, ABSORPTION SPECTRA, GOLD

Subject Categories : Organic Chemistry
      Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE