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Spray drying of zeolitic imidazolate frameworks: Investigation of crystal formation and properties.

Abstract

High-quality zeolite imidazole frameworks (ZIF-8, ZIF-67, and bimetallic Zn/Co-ZIF) were synthesized using spray-drying technique and the mechanism of crystal growth during the whole process is discussed. It is also demonstrated that the crystallization mechanism for N-donor containing ditopic imidazolate (IM) ligands forming ZIF structures is divergent from MOFs formation applying carboxylate ligands and their formation using the spray dry method occurs via a unique mechanism. An intermediate amorphous phase was obtained after spray drying the feed solution and the crystallographic ZIF structure was obtained during immersion in a solvent. Several characterization techniques such as FTIR, XRD, SEM, porosity analysis and elemental analysis etc., were applied to examine the characteristic properties of materials, including, intermediate compounds and final products. The results proved that the spray drying procedure is a facile, continuous and effective synthetic route to produce MOFs (ZIFs) in a higher quantity with high-quality properties such as high porosity, large surface, more active catalyst sites, etc. applying a minimum of time and energy which is unusual in common synthesis methods of MOFs.

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Publication details

The article was received on 13 Mar 2018, accepted on 15 May 2018 and first published on 16 May 2018


Article type: Paper
DOI: 10.1039/C8CE00392K
Citation: CrystEngComm, 2018, Accepted Manuscript
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    Spray drying of zeolitic imidazolate frameworks: Investigation of crystal formation and properties.

    S. chaemchuen, K. Zhou, B. Mousavi, M. G. Ghadamyari, P. M. Heynderickx, S. Zhuiykov, M. S. Yusubov and F. Verpoort, CrystEngComm, 2018, Accepted Manuscript , DOI: 10.1039/C8CE00392K

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