Abstract
Temperature-programmed desorption (TPD), high-resolution electron energy loss spectroscopy (HREELS), and density functional theory (DFT) were used to investigate the thermal surface chemistry of 2-iodoethanol (ICH2CH2OH) on Pd(111). 2-Iodoethanol undergoes C–I scission upon adsorption at low temperatures, resulting in 2-hydroxyethyl (−CH2CH2OH) formation. At low coverage, this intermediate decomposes to form carbon monoxide and hydrogen during TPD. At higher coverage, hydroxyethyl reacts to produce ethanol, ethylene, water, 2-iodoethanol, and acetaldehyde, with nearly complete suppression of the decarbonylation pathway. DFT and HREELS results indicate that the coverage dependence of the reaction pathways is correlated with a change in the adsorption geometry of hydroxyethyl. At low coverage the C–O bond lies parallel to the surface, while at higher coverage it is shifted into a perpendicular position. Adsorbed iodine is observed to play a significant role in blocking sites and favoring the upright adsorpt...
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
