Disentangling Reaction Processes of Zeolites within Single‐Oriented Channels

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Abstract: Establishing structure–reactivity relationships for specific channel orientations of zeolites is vital to developing new, superior materials for various applications, including oil and gas conversion processes. Herein, a well‐defined model system was developed to build structure–reactivity relationships for specific zeolite‐channel orientations during various catalytic reaction processes, for example, the methanol‐ and ethanol‐to‐hydrocarbons (MTH and ETH) process as well as oligomerization reactions. The entrapped and effluent hydrocarbons from single‐oriented zeolite ZSM‐5 channels during the MTH process were monitored by using operando UV/Vis diffuse reflectance spectroscopy (DRS) and on‐line mass spectrometry (MS), respectively. The results reveal that the straight channels favor the formation of internal coke, promoting the aromatic cycle. Furthermore, the sinusoidal channels produce aromatics, (e.g., toluene) that further grow into larger polyaromatics (e.g., graphitic coke) leading to deactivation of the zeolites. This underscores the importance of careful engineering of materials to suppress coke formation and tune product distribution by rational control of the location of zeolite acid sites and crystallographic orientations.

Location: Deutsche Nationalbibliothek Frankfurt am Main

Extent: Online-Ressource

Language: Englisch

Bibliographic citation: Disentangling Reaction Processes of Zeolites within Single‐Oriented Channels ; volume:59 ; number:36 ; year:2020 ; pages:15502-15506 ; extent:5
Angewandte Chemie / International edition. International edition ; 59, Heft 36 (2020), 15502-15506 (gesamt 5)

Creator: Fu, Donglong
van der Heijden, Onno
Stanciakova, Katarina
Schmidt, Joel E.
Weckhuysen, Bert

DOI: 10.1002/anie.201916596

URN: urn:nbn:de:101:1-2022061313154261770581

Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.

Last update: 15.08.2025, 7:21 AM CEST

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Fu, Donglong
van der Heijden, Onno
Stanciakova, Katarina
Schmidt, Joel E.
Weckhuysen, Bert

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