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Zeolite‐Stabilized Di‐ and Tetranuclear Molybdenum Sulfide Clusters Form Stable Catalytic Hydrogenation Sites
Author(s) -
Weindl Roland,
Khare Rachit,
Kovarik Libor,
Jentys Andreas,
Reuter Karsten,
Shi Hui,
Lercher Johannes A.
Publication year - 2021
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202015769
Subject(s) - molybdenum , cubane , catalysis , sulfide , cluster (spacecraft) , faujasite , nitrogenase , chemistry , zeolite , crystallography , inorganic chemistry , materials science , crystal structure , organic chemistry , nitrogen fixation , computer science , nitrogen , programming language
Supercages of faujasite (FAU)‐type zeolites serve as a robust scaffold for stabilizing dinuclear (Mo 2 S 4 ) and tetranuclear (Mo 4 S 4 ) molybdenum sulfide clusters. The FAU‐encaged Mo 4 S 4 clusters have a distorted cubane structure similar to the FeMo‐cofactor in nitrogenase. Both clusters possess unpaired electrons on Mo atoms. Additionally, they show identical catalytic activity per sulfide cluster. Their catalytic activity is stable (>150 h) for ethene hydrogenation, while layered MoS 2 structures deactivate significantly under the same reaction conditions.