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Article Dans Une Revue Angewandte Chemie International Edition Année : 2021

Unlocking the potential of hidden sites in FAUJASITE: new insights in a proton transfer mechanism

Louwanda Lakiss
Cassandre Kouvatas
Jean-Pierre Gilson
Hristiyan A Aleksandrov
Georgi N Vayssilov
Nikolai Nesterenko
Svetlana Mintova

Résumé

Zeolite Y and its ultra-stabilized hierarchical derivative (USY) are the most widely used zeolite-based heterogeneous catalysts in oil refining, petrochemisty, and other chemicals manufacturing. After almost 60 years of academic and industrial research, their resilience is unique as no other catalyst displaced them from key processes such as FCC and hydrocracking. The present study highlights the key difference leading to the exceptional catalytic performance of USY versus the parent zeolite Y in a multi-technique study combining advanced spectroscopies (IR and solid-state NMR) and molecular modeling. The set of results highlights a hitherto unreported proton transfer involving inaccessible active sites in sodalite cages that contributes to the exceptional catalytic performance of USY.

Domaines

Chimie
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Dates et versions

hal-03428457 , version 1 (15-11-2021)

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Louwanda Lakiss, Cassandre Kouvatas, Jean-Pierre Gilson, Hristiyan A Aleksandrov, Georgi N Vayssilov, et al.. Unlocking the potential of hidden sites in FAUJASITE: new insights in a proton transfer mechanism. Angewandte Chemie International Edition, inPress, ⟨10.1002/anie.202110107⟩. ⟨hal-03428457⟩
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