%0 Journal Article %1 Kaichev2004 %A Kaichev, V. V. %A Morkel, M. %A Unterhalt, H. %A Prosvirin, I. P. %A Bukhtiyarov, V. I. %A Rupprechter, G. %A Freund, H. J. %D 2004 %J Surf. Sci. %K crystal frequency index photoelectron single spectroscopy {Alcohols,Carbon} {generation,X-ray} {monoxide,Catalysis,Low} {surfaces,Palladium,Sum} %N Part 2 %P 1024--1029 %R 10.1016/j.susc.2004.06.100 %T C-O bond scission on "defect-rich and perfect" Pd(1 1 1)? %U http://www.sciencedirect.com/science/article/B6TVX-4CN9FY7-9/2/db6ee20aba55222109a067d81821c0d1 %V 566-568 %X To investigate the influence of surface defects on CO adsorption and dissociation, well-annealed and "defect-rich" Pd(1 1 1) were examined by sum frequency generation (SFG) and X-ray photoelectron spectroscopy (XPS) within the pressure range 10-6-1 mbar. Ar+ ion sputtering was employed to produce surface defects which exhibited vibrational and photoemission characteristics different from the regular adsorption sites on Pd(1 1 1). Even under high-pressure, SFG and XPS indicated that no CO dissociation occurred on both surfaces at 300-400 K. By contrast, C-O bond scission was observed during methanol decomposition producing carbonaceous deposits beside CO and H2. A possible relationship between the adsorption geometry and C-O bond scission is discussed.

@article{Kaichev2004, abstract = {To investigate the influence of surface defects on {CO} adsorption and dissociation, well-annealed and "defect-rich" Pd(1 1 1) were examined by sum frequency generation {(SFG)} and X-ray photoelectron spectroscopy {(XPS)} within the pressure range 10-6-1 mbar. Ar+ ion sputtering was employed to produce surface defects which exhibited vibrational and photoemission characteristics different from the regular adsorption sites on Pd(1 1 1). Even under high-pressure, {SFG} and {XPS} indicated that no {CO} dissociation occurred on both surfaces at 300-400 K. By contrast, {C-O} bond scission was observed during methanol decomposition producing carbonaceous deposits beside {CO} and H2. A possible relationship between the adsorption geometry and {C-O} bond scission is discussed.}, added-at = {2009-10-30T10:04:05.000+0100}, author = {Kaichev, V. V. and Morkel, M. and Unterhalt, H. and Prosvirin, I. P. and Bukhtiyarov, V. I. and Rupprechter, G. and Freund, H. J.}, biburl = {https://www.bibsonomy.org/bibtex/2a1e74fd8f7bf7240bba21eca196603d9/jfischer}, doi = {10.1016/j.susc.2004.06.100}, groups = {public}, interhash = {2ecb88f8511a67fcb073b3e3a5c45318}, intrahash = {a1e74fd8f7bf7240bba21eca196603d9}, issn = {0039-6028}, journal = {Surf. Sci.}, keywords = {crystal frequency index photoelectron single spectroscopy {Alcohols,Carbon} {generation,X-ray} {monoxide,Catalysis,Low} {surfaces,Palladium,Sum}}, month = {September}, number = {Part 2}, pages = {1024--1029}, timestamp = {2009-10-30T10:04:13.000+0100}, title = {C-O bond scission on "defect-rich and perfect" Pd(1 1 1)?}, url = {http://www.sciencedirect.com/science/article/B6TVX-4CN9FY7-9/2/db6ee20aba55222109a067d81821c0d1}, volume = {566-568}, year = 2004 }