Isomer-Selective Detection of Aromatic Molecules in Temperature-Programmed Desorption for Model Catalysis

Andreas Winbauer, Sebastian L. Kollmannsberger, Constantin A. Walenta, Patrick Schreiber, Josef Kiermaier, Martin Tschurl, Ueli Heiz

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Based on three different molecules dosed on a Pt(111) single crystal the selectivity and sensitivity of REMPI-TPD in UHV is investigated for a potential application in heterogeneous catalysis. It is shown that the two structural isomers ethylbenzene and p-xylene can be discriminated by REMPI in a standard TPD experiment. The latter is not possible for the ionization with electrons in a Q-MS. It is further demonstrated by benzene TPD studies that the sensitivity of the REMPI-TOF-MS is comparable to commercial EI-Q-MS solutions and enables the detection of less than 0.6% molecules of a monolayer.

Original languageEnglish
Pages (from-to)5392-5397
Number of pages6
JournalAnalytical Chemistry
Volume88
Issue number10
DOIs
StatePublished - 17 May 2016
Externally publishedYes

Fingerprint

Dive into the research topics of 'Isomer-Selective Detection of Aromatic Molecules in Temperature-Programmed Desorption for Model Catalysis'. Together they form a unique fingerprint.

Cite this