Sugar-based synthesis of an enantiomorphically pure zeolite

Andrés Sala, José L. Jordá, German Sastre, Antonio L. Llamas-Saiz, Fernando Rey () and Susana Valencia ()
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Andrés Sala: Universitat Politècnica de València - Consejo Superior de Investigaciones Científicas (UPV-CSIC)
José L. Jordá: Universitat Politècnica de València - Consejo Superior de Investigaciones Científicas (UPV-CSIC)
German Sastre: Universitat Politècnica de València - Consejo Superior de Investigaciones Científicas (UPV-CSIC)
Antonio L. Llamas-Saiz: Universidad de Santiago de Compostela; Edificio CACTUS
Fernando Rey: Universitat Politècnica de València - Consejo Superior de Investigaciones Científicas (UPV-CSIC)
Susana Valencia: Universitat Politècnica de València - Consejo Superior de Investigaciones Científicas (UPV-CSIC)

Nature Communications, 2024, vol. 15, issue 1, 1-8

Abstract: Abstract Zeolites, well-known by their high selectivities in catalytic and separation processes due to their porous nature, play a crucial role in various applications. One significant long-term objective is the synthesis of enantiopure zeolites, potentially enabling enantioselective processes. Earlier attempts result in partial success, yielding some enantiomorphically enriched zeolites. In this study, we introduce a zeolite synthesis approach utilizing chiral organic structure directing agents (ch-OSDAs) derived from sugars, guiding the crystallization process toward achieving enantiomorphically pure S-STW zeolite. The purity of the zeolite is confirmed through extensive analyses of individual crystals using single-crystal X-ray diffraction, extracting Flack parameters and space groups. Theoretical and structural investigations confirm that the sugar-derived ch-OSDA perfectly fits the characteristic helicoidal channel of the zeolite structure, featuring its efficacy in achieving enantiopure zeolites.

Date: 2024
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DOI: 10.1038/s41467-024-49659-2

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