Structural characterization of HPM-7, a more ordered than expected germanosilicate zeolite
Lu, Peng ; Zhang, Yaping ; Mayoral, Alvaro (Universidad de Zaragoza) ; Gómez-Hortigüela, Luis ; Camblor, Miguel A.
Resumen: HPM-7, a germanosilicate synthesized using long imidazolium-based dications with two different linkers, is shown to possess the POS topology, although disorder may exist but it is very difficult to discern. First, three simple ordered polymorphs (POS-A to POS-C) with very similar energies and structural motifs could give rise to intergrowths that would be very difficult to recognize by powder X-ray diffraction, according to DIFFaX simulations. Another four structures (POS-D to POS-G) can be derived from POS by changing the orientation of two single four rings within the structure, possibly providing an additional source of disorder. While 3D EDT strongly suggests that HPM-7 basically possesses the POS-A (i.e. POS) topology, a detailed HR-STEM study demonstrates the rare existence of some disorder compatible with the polymorph POS-D. The general avoidance of polymorphs with very similar structural motifs and comparable energies points to a rather specific structure-direction by the organic dications used.
Idioma: Inglés
DOI: 10.1039/D0DT00818D
Año: 2020
Publicado en: Dalton Transactions 49, 21 (2020), 7037-7043
ISSN: 1477-9226
Factor impacto JCR: 4.39 (2020)
Categ. JCR: CHEMISTRY, INORGANIC & NUCLEAR rank: 8 / 45 = 0.178 (2020) - Q1 - T1
Factor impacto SCIMAGO: 0.98 - Inorganic Chemistry (Q1)
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2015-71117-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2016-77496-R
Tipo y forma: Article (Published version)
Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes.
Exportado de SIDERAL (2021-09-02-09:30:23)
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Idioma: Inglés
DOI: 10.1039/D0DT00818D
Año: 2020
Publicado en: Dalton Transactions 49, 21 (2020), 7037-7043
ISSN: 1477-9226
Factor impacto JCR: 4.39 (2020)
Categ. JCR: CHEMISTRY, INORGANIC & NUCLEAR rank: 8 / 45 = 0.178 (2020) - Q1 - T1
Factor impacto SCIMAGO: 0.98 - Inorganic Chemistry (Q1)
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2015-71117-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2016-77496-R
Tipo y forma: Article (Published version)
Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. Exportado de SIDERAL (2021-09-02-09:30:23)
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Record created 2020-06-29, last modified 2021-09-02