Speaker
Dr
John Newberg
(Lawrence Berkeley National Laboratory)
Description
We present results of gas phase and adsorbed phase XPS and NEXAFS spectra of 1-propanol, 2-propanol, acetone, and 1-propanal on ice at -45°C using synchrotron based, ambient pressure X-ray photoemission spectroscopy. Uptake experiments give rise to Langmuirian isotherms. The two alcohols and acetone show little difference in the photoemission spectra between the gas phase and adsorbed phase, suggesting that adsorption occurs molecularly. However, adsorption of 1-propanal shows evidence of oxidation to an organic acid. Further studies are needed to understand this adsorption behavior.
Please list some keywords
Laboratory, adsorption, trace gas, organics
Primary author
Dr
John Newberg
(Lawrence Berkeley National Laboratory)
Co-author
Dr
Hendrik Bluhm
(Lawrence Berkeley National Laboratory)
