Adsorption of 2-propanol on ice probed by ambient pressure X-ray photoelectron spectroscopy
| Author(s) | Newberg, John T. | |
| Author(s) | Bluhm, Hendrik | |
| Ordered Author | John T. Newberg and Hendrik Bluhm | |
| UD Author | Newberg, John T. | en_US |
| Date Accessioned | 2015-12-15T16:11:56Z | |
| Date Available | 2015-12-15T16:11:56Z | |
| Copyright Date | Copyright ©2015 The Royal Society of Chemistry | en_US |
| Publication Date | 2015-08-18 | |
| Description | Publisher's PDF. | en_US |
| Abstract | The interaction of 2-propanol with ice was examined via ambient pressure X-ray photoelectron spectroscopy (APXPS), a surface sensitive technique that probes the adsorbed 2-propanol directly with submonolayer resolution. Isothermal uptake experiments were performed on vapor deposited ice at 227 K in the presence of the equilibrium water vapor pressure of 0.05 Torr and 2-propanol partial pressures ranging from 5 × 10−5 to 2 × 10−3 Torr. The C 1s APXPS spectra of adsorbed 2-propanol showed two characteristic peaks associated with the COH alcohol group and CMe methyl groups in a 1 : 2 ratio, respectively. Coverage increased with 2-propanol partial pressure and followed first order Langmuir kinetics with a Langmuir constant of K = 6.3 × 103 Torr−1. The 1 : 2 ratio of COH : CMe remained constant with increasing coverage, indicating there is no chemical reaction upon adsorption. The observed Langmuir kinetics using APXPS is consistent with previous observations of other small chain alcohols via indirect adsorption methods using, e.g., Knudsen cell and coated wall flow tube reactors. Graphical abstract: Adsorption of 2-propanol on ice probed by ambient pressure X-ray photoelectron spectroscopy | en_US |
| Department | University of Delaware. Department of Chemistry and Biochemistry. | en_US |
| Citation | Newberg JT, - Bluhm H. - Adsorption of 2-propanol on ice probed by ambient pressure X-ray photoelectron spectroscopy. - Phys Chem Chem Phys. (- 36):- 23554. | en_US |
| DOI | doi:10.1039/C5CP03821A | en_US |
| ISSN | 1463-9076 ; e- 1463-9084 | en_US |
| URL | http://udspace.udel.edu/handle/19716/17313 | |
| Language | en_US | en_US |
| Publisher | Royal Society of Chemistry | en_US |
| dc.rights | Creative Commons Attribution 3.0 Unported licence (CC BY 3.0) (http://creativecommons.org/licenses/by/3.0/) | en_US |
| dc.source | Physical Chemistry Chemical Physics | en_US |
| dc.source.uri | http://pubs.rsc.org/en/journals/journalissues/cp#!recentarticles&adv | en_US |
| Title | Adsorption of 2-propanol on ice probed by ambient pressure X-ray photoelectron spectroscopy | en_US |
| Type | Article | en_US |
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