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Phase Transformation Behavior of a Two-Dimensional Zeolite
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för material- och miljökemi (MMK).
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för material- och miljökemi (MMK).
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för material- och miljökemi (MMK).
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Rekke forfattare: 82019 (engelsk)Inngår i: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 58, nr 30, s. 10230-10235Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Understanding the molecular-level mechanisms of phase transformation in solids is of fundamental interest for functional materials such as zeolites. Two-dimensional (2D) zeolites, when used as shape-selective catalysts, can offer improved access to the catalytically active sites and a shortened diffusion length in comparison with their 3D analogues. However, few materials are known to maintain both their intralayer microporosity and structure during calcination for organic structure-directing agent (SDA) removal. Herein we report that PST-9, a new 2D zeolite which has been synthesized via the multiple inorganic cation approach and fulfills the requirements for true layered zeolites, can be transformed into the small-pore zeolite EU-12 under its crystallization conditions through the single-layer folding process, but not through the traditional dissolution/recrystallization route. We also show that zeolite crystal growth pathway can differ according to the type of organic SDAs employed.

sted, utgiver, år, opplag, sider
2019. Vol. 58, nr 30, s. 10230-10235
Emneord [en]
crystal growth, folding mechanism, layered zeolites, phase transformation, structure elucidation
HSV kategori
Identifikatorer
URN: urn:nbn:se:su:diva-171639DOI: 10.1002/anie.201904825ISI: 000476452700030PubMedID: 31116498OAI: oai:DiVA.org:su-171639DiVA, id: diva2:1344872
Tilgjengelig fra: 2019-08-22 Laget: 2019-08-22 Sist oppdatert: 2019-08-22bibliografisk kontrollert

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