%0 Journal Article
%A Kazempoor, M.
%A Pirug, G.
%T Complex Formation and Proton Transfer between Formic Acid and Water Adsorbed on Au(111) Surfaces under UHV Conditions
%J Applied physics / A
%V 87
%@ 0947-8396
%C Berlin
%I Springer
%M PreJuSER-53334
%P 435 - 441
%D 2007
%Z Record converted from VDB: 12.11.2012
%X The coadsorption of formic acid and water on Au(111) surfaces has been investigated by means of vibrational and photoelectron spectroscopy (HREELS, XPS). Formic acid adsorbs at 90 K molecularly with vibrational modes characteristic for flat lying zig-zag chains in the mono- and multilayer regime, like in solid formic acid. Annealing results in a complete desorption at 190 K. Sequential adsorption of formic acid and water at 90 K shows no significant chemical interaction. Upon annealing the coadsorbed layer to 140 K a hydrogen-bonded cyclic complex of formic acid with one water molecule could be identified using isotopically labelled adsorbates (D2O, (HCOOD)-C-13). Upon further annealing this complex decomposes leaving molecularly adsorbed formic acid on the surface at 160 K, accompanied by a proton exchange between formic acid and water.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000244950900015
%R 10.1007/s00339-007-3926-8
%U https://juser.fz-juelich.de/record/53334