EFFECTS OF TiO//2 SURFACE SPECIES ON THE ADSORPTION AND COADSORPTION OF CO AND H//2 ON Ni: IMPLICATIONS FOR METHANATION OVER TiO//2-SUPPORTED Ni.

Gregory Raupp, J. A. Dumesic

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Temperature-programmed desorption (TPD) under ultra-high vacuum conditions of CO and H//2 from polycrystalline nickel surfaces containing varying amounts of titania showed that the effects of titania are short-ranged. Carbon monoxide adsorption was weakened while hydrogen adsorption was strengthened with increasing concentration of surface titania. Coadsorption measurements confirmed that hydrogen and CO compete for sites on nickel. Using adsorption and desorption kinetic parameters derived from the TPD experiments, calculations indicated that shifts in heats of adsorption due to the presence of titania may result in a one to two order of magnitude higher hydrogen adatom coverage under steady-state methanation conditions relative to a clean Ni surface.

Original languageEnglish (US)
Title of host publicationACS Symposium Series
EditorsR.T.K. Baker, S.J. Tauster, J.A. Dumesic
PublisherACS
Pages34-47
Number of pages14
ISBN (Print)0841209553
StatePublished - Dec 1 1986

Publication series

NameACS Symposium Series
ISSN (Print)0097-6156

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Fingerprint Dive into the research topics of 'EFFECTS OF TiO//2 SURFACE SPECIES ON THE ADSORPTION AND COADSORPTION OF CO AND H//2 ON Ni: IMPLICATIONS FOR METHANATION OVER TiO//2-SUPPORTED Ni.'. Together they form a unique fingerprint.

Cite this