The Catalytic Role of Coronene for Molecular Hydrogen Formation

Details The Catalytic Role of Coronene for Molecular Hydrogen Formation The Catalytic Role of Coronene for Molecular Hydrogen Formation

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012apj...745l...2m&link_type=abstract

The Astrophysical Journal Letters, Volume 745, Issue 1, article id. L2 (2012).

Astronomy and Astrophysics

Astronomy

Astrochemistry, Methods: Laboratory

Scientific paper

We present the results of an experimental study on the interaction of atomic deuterium with coronene films. The effects of D atom irradiation have been analyzed with infrared spectroscopy. The spectral changes provide evidence for deuteration of the outer edge coronene C sites via a D addition reaction. A cross section of 1.1 Å2 is estimated for the deuteration process of coronene. HD and D2 molecules form, through abstraction reactions, on deuterated coronene sites with a cross section of 0.06 Å2. The magnitude of both cross sections is in line with an Eley-Rideal type process. The results show that hydrogenated neutral polycyclic aromatic hydrocarbon molecules act as catalysts for the formation of molecular hydrogen.

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