TY  - JOUR
AU  - Kazempoor, M.
AU  - Pirug, G.
TI  - Complex Formation and Proton Transfer between Formic Acid and Water Adsorbed on Au(111) Surfaces under UHV Conditions
JO  - Applied physics / A
VL  - 87
SN  - 0947-8396
CY  - Berlin
PB  - Springer
M1  - PreJuSER-53334
SP  - 435 - 441
PY  - 2007
N1  - Record converted from VDB: 12.11.2012
AB  - 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.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000244950900015
DO  - DOI:10.1007/s00339-007-3926-8
UR  - https://juser.fz-juelich.de/record/53334
ER  -