Graphene and graphite, low-temperature catalysts producing weakly-excited hydrogen molecules

Wilhelm Brenig, Tanglaw Roman

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


A model for the low-temperature catalysis of hydrogen molecules on graphene and graphite, relevant for interstellar chemistry, is proposed: hydrogen atoms are either chemisorbed at the edges, or physisorbed on graphene and transported to a chemisorbed state at the edges. A second atom can then produce a molecule via a hot atom or an Eley-Rideal process. Since much of the energy is needed to desorb the molecule from the tightly-bound chemisorbed state, the desorbing molecules have only low internal excitation energy, in agreement with astronomical observations.

Original languageEnglish
Pages (from-to)117-120
Number of pages4
JournalChemical Physics
Publication statusPublished - 17 Aug 2014
Externally publishedYes


  • Coupled-channel calculations
  • Graphene
  • Graphite
  • Heterogeneous catalysis at surfaces
  • Hydrogen production
  • Interplanetary dust and gas


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