A new CO adsorption state on thermally treated PtTiO2 model catalysts

作者: Carmen Ocal , Salvador Ferrer

DOI: 10.1016/0039-6028(86)90360-2

关键词: AdsorptionOxideElectronic structureCatalysisMaterials scienceMoleculeBinding energyAtomStoichiometryPhysical chemistryCrystallography

摘要: Abstract Pt clusters on thin stoichiometric TiO2 films grown Ti single crystals were used as model catalysts. Heating the catalysts to ∼ 500 °C which is temperature for strong metal-support interaction (SMSI) in TiO 2 caused a change electronic structure of atoms that we designed alloying with oxide support. The uptake CO per atom thermally treated was factor smaller than non-annealed ones. molecules bounded alloyed unique way revealed by binding energy C1s electron level.

参考文章(8)
M. Alnot, A. Cassuto, R. Ducros, J.J. Ehrhardt, B. Weber, XPS and UPS study of the reaction of carbon monoxide with oxygen and nitrogen monoxide on platinum-rhenium alloy Surface Science Letters. ,vol. 114, ,(1982) , 10.1016/0039-6028(82)90688-4
M. G. Mason, Electronic structure of supported small metal clusters Physical Review B. ,vol. 27, pp. 748- 762 ,(1983) , 10.1103/PHYSREVB.27.748
S. Ferrer, M. Salmerón, C. Ocal, P. Roubin, J. Lecante, Core level photoemission study of Au deposited on Pt(111) in the submonolayer range Surface Science. ,vol. 160, ,(1985) , 10.1016/0039-6028(85)91020-9
H.P. Bonzel, G. Pirug, Photoelectron spectroscopy of NO adsorbed on Pt(100) Surface Science. ,vol. 62, pp. 45- 60 ,(1977) , 10.1016/0039-6028(77)90427-7
G. Ertl, M. Neumann, K.M. Streit, Chemisorption of CO on the Pt(111) surface Surface Science. ,vol. 64, pp. 393- 410 ,(1977) , 10.1016/0039-6028(77)90052-8
S. J. Tauster, S. C. Fung, R. L. Garten, Strong metal-support interactions. Group 8 noble metals supported on titanium dioxide Journal of the American Chemical Society. ,vol. 100, pp. 170- 175 ,(1978) , 10.1021/JA00469A029