Identification of active catalysts for the acceptorless dehydrogenation of alcohols to carbonyls - Archive ouverte HAL
Article Dans Une Revue Nature Communications Année : 2021

Identification of active catalysts for the acceptorless dehydrogenation of alcohols to carbonyls

Résumé

Abstract Acceptorless dehydrogenation into carbonyls and molecular hydrogen is an attractive strategy to valorize (biobased) alcohols. Using 2-octanol dehydrogenation as benchmark reaction in a continuous reactor, a library of metal-supported catalysts is tested to validate the predictive level of catalytic activity for combined DFT and micro-kinetic modeling. Based on a series of transition metals, scaling relations are determined as a function of two descriptors, i.e. the surface binding energies of atomic carbon and oxygen. Then, a volcano-shape relation based on both descriptors is derived, paving the way to further optimization of active catalysts. Evaluation of 294 diluted alloys but also a series of carbides and nitrides with the volcano map identified 12 promising candidates with potentially improved activity for alcohol dehydrogenation, which provides useful guidance for experimental catalyst design. Further screening identifies β-Mo 2 N and γ-Mo 2 N exposing mostly (001) and (100) facets as potential candidates for alcohol dehydrogenation.
Fichier principal
Vignette du fichier
2021_NatComm_s41467-021-25214-1-1.pdf (1007.2 Ko) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-03374334 , version 1 (12-10-2021)

Identifiants

Citer

Tao Wang, Jin Sha, Maarten Sabbe, Philippe Sautet, Marc Pera-Titus, et al.. Identification of active catalysts for the acceptorless dehydrogenation of alcohols to carbonyls. Nature Communications, 2021, 12 (1), ⟨10.1038/s41467-021-25214-1⟩. ⟨hal-03374334⟩
87 Consultations
76 Téléchargements

Altmetric

Partager

More