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Article Dans Une Revue ChemCatChem Année : 2018

Surprising Differences of Alkane C‐H Activation Catalyzed by Ruthenium Nanoparticles: Complex Surface‐Substrate Recognition?

Résumé

The activation of C-H bonds of alkanes remains a major challenge for chemistry. In a series of deuteration experiments with D2 in contact with bis-(diphenylphosphino)butane (dppb) stabilized ruthenium nanoparticles (liquid substrates, 60°C, 6 bar D2) we have observed a surprisingly large reactivity of cyclopentane as compared to cyclohexane and other alkanes. DFT calculations using a ligand-free Ru13H17 model cluster as catalyst indicate oxidative C-H cleavage of the bound substrates as rate limiting reaction step. They also indicate similar binding and activation enthalpies of reactions of cyclopentane and cyclohexane.
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hal-02296026 , version 1 (24-09-2019)

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Niels Rothermel, Donia Bouzouita, Tobias Röther, Torsten Gutmann, Iker Del rosal, et al.. Surprising Differences of Alkane C‐H Activation Catalyzed by Ruthenium Nanoparticles: Complex Surface‐Substrate Recognition?. ChemCatChem, 2018, 10 (19), pp.4243-4247. ⟨10.1002/cctc.201801022⟩. ⟨hal-02296026⟩
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