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Chemistry of Ethylene Glycol on a Rh(100) Single‐Crystal Surface
Author(s) -
Jansen Maarten M. M.,
Nieuwenhuys Ben E.,
Niemantsverdriet Hans
Publication year - 2009
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.200900153
Subject(s) - chemistry , ethylene glycol , infrared spectroscopy , carbon monoxide , molecule , dehydrogenation , photochemistry , rhodium , catalysis , desorption , denticity , hydrogen bond , ethylene , inorganic chemistry , absorption spectroscopy , adsorption , polymer chemistry , organic chemistry , crystal structure , physics , quantum mechanics
The adsorption and decomposition of ethylene glycol on Rh(100) have been studied with temperature‐programmed reaction spectroscopy and reflection absorption infrared spectroscopy. Ethylene glycol adsorbs onto the surface via the hydroxyl groups. At 150 K, both hydroxyl bonds are broken, forming an ethylenedioxy intermediate. At high coverage, a portion of the ethylene glycol molecules dehydrogenate only one hydroxyl bond, forming a monodentate species. These intermediates decompose further, with complete dehydrogenation and simultaneous CC bond breaking occurring at around 290 K. Hydrogen and carbon monoxide are formed, which desorb at 290 and 500 K, respectively.