H2 catalysis through superhydrogenation of interstellar polycyclic aromatic hydrocarbons. Issue Volume 15:Issue S350(2019) (April 2019)

• Record Type: Journal Article
• Authors: Simonsen, Frederik Doktor S.; Jensen, Pernille A.; Skov, Anders W.; Jaganathan, Rijutha; Thrower, John D.; Hornekær, Liv
• Editors: Salama, Farid; Linnartz, Harold
• Is Part Of: Proceedings of the International Astronomical Union. Volume 15:Issue S350(2019)
• Page Start: 264
• Page End: 266
• Publication Date: 2019-04
• Subjects: Astrochemistry, -- laboratory, -- ISM, -- molecules, -- clouds; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921320000034
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: Experimental data showing superhydrogenation of neutral polycyclic aromatic hydrocarbons (PAHs) coronene, pentacene and pentacenequinone is presented. PAH monolayers were prepared on a highly oriented pyrolytic graphite surface and subsequently exposed to a beam of atomic hydrogen. The superhydrogenated PAH species were examined via temperature programmed desorption measurements. Stable intermediate superhydrogenation degrees as well as fully superhydrogenated species are observed and the initial reaction cross section for coronene has been determined.