An Aluminosilicate Zeolite Containing Rings of Tetrahedral Atoms with All Odd Numbers from Five to Eleven

Jo, D. ; Zhang, Y. ; Lee, J.H. ; Mayoral, A. (Universidad de Zaragoza) ; Shin, J. ; Kang, N.Y. ; Park, Y.K. ; Hong, S.B.

Resumen: Herein we report the synthesis, structure solution, and catalytic properties of PST-31, which has an unprecedented framework topology. This high-silica (Si/Al=16) zeolite was synthesized using a pyrazolium-based dication with a tetramethylene linker as an organic structure-directing agent (OSDA) in hydroxide media. The PST-31 structure is built from new building layers containing four-, five-, six-, and seven-membered rings, which are connected by single four-membered rings in the interlayer region to form a two-dimensional pore system. Its channels consist of [4.56.6.9.11] and [5.6.7.9.10.11] cavities and are thus delimited by nine-, ten-, and eleven-membered rings. The OSDA cations in as-synthesized PST-31 were determined to reside without disorder in the large [42.514.64.72.94] cavities composed of smaller [4.56.6.9.11] and [5.6.7.9.10.11] ones, leading to a symmetry coincidence between the OSDA and the surrounding zeolite cavity. The proton form of PST-31 was found to be selective for the cracking of n-hexane to light olefins.

Idioma: Inglés

DOI: 10.1002/anie.202015483

Año: 2021

Publicado en: ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 60, 11 (2021), 5936-5940
ISSN: 1433-7851

Factor impacto JCR: 16.823 (2021)

Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 15 / 180 = 0.083 (2021) - Q1 - T1

Factor impacto CITESCORE: 23.9 - Chemical Engineering (Q1)

Factor impacto SCIMAGO: 5.126 - Chemistry (miscellaneous) (Q1) - Catalysis (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E13-20R
Financiación: info:eu-repo/grantAgreement/ES/MICINN/RYC-2018-024561-I

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)