Ethanol Adsorption, Decomposition and Oxidation on Ir(111): A High Resolution XPS Study
- 11 April 2007
- journal article
- research article
- Published by Wiley in Chemphyschem
- Vol. 8 (6) , 932-937
- https://doi.org/10.1002/cphc.200700055
Abstract
Ethanol (C2H5OH) adsorption, decomposition and oxidation is studied on Ir(111) using high-energy resolution, fast XPS and temperature-programmed desorption. During heating of an adsorbed ethanol layer a part of the C2H5OHad desorbs molecularly, and another part remains on the surface and decomposes around 200 K; these two decomposition pathways are identified, as via acetyl (H3CCO) and via COad+CH3ad, respectively. Acetyl and CH3ad decompose around 300 K into CHad (and COad). CHad decomposes forming Cx and H2 around 520 K. In the presence of Oad an acetate intermediate is formed around 180 K, as well as a small amount of CH3ad and COad. Acetate decomposes between 400–480 K into CO2, H2(/H2O) and CHad.Keywords
This publication has 32 references indexed in Scilit:
- Ethanol auto-thermal reforming on rhodium catalysts and initial steps simulation on single crystals under UHV conditionsApplied Catalysis A: General, 2005
- Ethanol Decomposition: C-C Cleavage Selectivity on Rh(111)Chemphyschem, 2004
- A Fast XPS study of the surface chemistry of ethanol over Pt{111}Surface Science, 2004
- DFT studies for cleavage of C$z.sbnd;C and C$z.sbnd;O bonds in surface species derived from ethanol on Pt(111)Journal of Catalysis, 2003
- Adsorption of methanol, ethanol and water on well-characterized PtSn surface alloysSurface Science, 1998
- Low temperature CC bond scission during ethanol decomposition on Pt(331)Surface Science, 1997
- Synchronous Thermal Desorption and Decomposition of Ethanol on Rh{111}The Journal of Physical Chemistry, 1995
- Divergent pathways of acetaldehyde and ethanol decarbonylation on the Rh(111) surfaceJournal of Catalysis, 1991
- Spectroscopic identification of alkoxide, aldehyde, and acyl intermediates in alcohol decomposition on Pd(111)Surface Science, 1990
- The influence of oxygen on the selectivity of alcohol conversion on the Pd(111) surfaceSurface Science, 1988