DataVXChemistry of MaterialsPaper
journal article·2021-10-12Open access

Sandwich-Type Zeolite Intergrowths with MFI and the Novel Extra-Large Pore IDM-1 as Ordered End-Members

Luis A. Villaescusa, Jian Li, Alvaro Mayoral, Zihao Rei Gao, Miguel A. Camblor

Chemistry of Materials· Volume 33· Issue 19
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Source abstract

Abstract

High Resolution Image Download MS PowerPoint Slide 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.
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Research context

Catalysis & surfaces

OpenAlex topics: Zeolite Catalysis and Synthesis · Metal-Organic Frameworks: Synthesis and Applications · Mesoporous Materials and Catalysis

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat de València-Universitat Politècnica de València, Camino de Vera s/n, Valencia 46022, Spain

CIBER de Bioingeniería Biomateriales y Nanomedicina (CIBER-BBN), Valencia 46022, Spain

Departamento de Química, Universitat Politècnica de València, Camí de Vera s/n, Valencia 46022, Spain

Berzelii Center EXSELENT on Porous Materials, Department of Materials and Environmental Chemistry, Stockholm University, Stockholm 10691, Sweden

Instituto de Nanociencia y Materiales de Aragon (INMA-CSIC), Universidad de Zaragoza, c/ Pedro Cerbuna, Zaragoza 50009, Spain

Laboratorio de Microscopias Avanzadas (LMA-Universidad de Zaragoza), Center for High-resolution Electron Microscopy (ChEM), School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Pudong, Shanghai 201210, China

Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas (ICMM-CSIC), c/Sor Juana Inés de la Cruz 3, Madrid 28049, Spain

Funding

Ministerio de Ciencia e Innovaci??n · Knut och Alice Wallenbergs Stiftelse · ShanghaiTech University · National Natural Science Foundation of China · Swedish Research Council · Regional government of Aragon · Generalitat Valenciana

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