Sandwich-type zeolite intergrowths with MFI and the novel extralarge pore IDM-1 as ordered end-members

Villaescusa, L. A. ; Li, Jain. ; Mayoral, Álvaro (Universidad de Zaragoza) ; Gao, Zihao Rei ; Camblor, Miguel A.

Resumen: Stacking faults are two-dimensional planar defects frequently arising in zeolites, modifying their properties and potentially affecting their performance in catalysis and separation applications. In classical zeolite intergrowths, a topologically unique zeolite layer may often pile up after some spatial transformation (lateral translation, rotation, and/or reflection) that may occur in different amounts or directions with about similar probabilities, leading to a difficult to control disorder. Here, we present a new kind of zeolite intergrowth that requires an additional topologically distinct layer rather than a spatial transformation of a unique one. Stacking of the so-called pentasil layers produces the well-known medium pore zeolite MFI. Intercalation in strict alternation of a topologically distinct second layer sandwiched between pentasil layers expands the structure to produce the new extra-large pore IDM-1. Stacking disorder modulates the structural expansion along the stacking direction. The disordered materials have been studied by simulation of the X-ray diffraction patterns using the program DIFFaX and by Cs-corrected high-resolution electron microscopy. We show that disorder does not occur at random but in extended domains and can be controlled all the way from MFI to IDM-1 by just varying the concentration of the synthesis mixture.

Idioma: Inglés

DOI: 10.1021/acs.chemmater.1c02631

Año: 2021

Publicado en: CHEMISTRY OF MATERIALS 33, 19 (2021), 7869-7877
ISSN: 0897-4756

Factor impacto JCR: 10.508 (2021)

Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 48 / 345 = 0.139 (2021) - Q1 - T1
Categ. JCR: CHEMISTRY, PHYSICAL rank: 31 / 165 = 0.188 (2021) - Q1 - T1

Factor impacto CITESCORE: 15.9 - Chemical Engineering (Q1) - Materials Science (Q1)

Factor impacto SCIMAGO: 2.93 - Chemistry (miscellaneous) (Q1) - Chemical Engineering (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E13-20R
Financiación: info:eu-repo/grantAgreement/ES/MCIU-FEDER/RTI2018-101599-B-C22
Financiación: info:eu-repo/grantAgreement/ES/MCIU/PID2019- 105479RB-I00
Financiación: info:eu-repo/grantAgreement/ES/MCIU/RYC-2018-024561-I
Financiación: info:eu-repo/grantAgreement/ES/MINECO-AEI-FEDER/MAT2015-71117-R

Tipo y forma: Artículo (Versión definitiva)

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