Shaping of Flexible Metal-Organic Frameworks: Combining Macroscopic Stability and Framework Flexibility

Kriesten M, Vargas Schmitz J, Siegel J, Smith CE, Kaspereit M, Hartmann M (2019)


Publication Type: Journal article, Original article

Publication year: 2019

Journal

Pages Range: 4700-4709

Journal Issue: 43

DOI: 10.1002/ejic.201901100

Abstract

A facile extrusion approach that can fully retain the breathing behavior of flexible metal-organic frameworks (MOF) like MIL-53 and MIL-53-NH2 employing methyl cellulose as binder is reported. Shaped MOF extrudates were extensively characterized by nitrogen sorption, X-ray diffraction, thermogravimetric analysis and scanning electron microscopy. A detailed study on the mechanical stability of MIL-53 extrudates with different amounts of binder reveals an increase in stability at low binder fractions while the maximum in attainable stability is reached at 5 wt.-% binder. In-situ XRD studies in CO2 atmosphere and under humid conditions, respectively, demonstrate the reversibility in breathing behavior of the MIL-53 extrudates without affecting the phase transition kinetics. High-pressure methane and carbon dioxide isotherms on MIL-53 and MIL-53-NH2 extrudates exhibit loadings that are comparable to the uptake of the pristine powder. The shaping approach reported herein paves the way for using flexible MOF structures in technical applications.

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How to cite

APA:

Kriesten, M., Vargas Schmitz, J., Siegel, J., Smith, C.E., Kaspereit, M., & Hartmann, M. (2019). Shaping of Flexible Metal-Organic Frameworks: Combining Macroscopic Stability and Framework Flexibility. European Journal of Inorganic Chemistry, 43, 4700-4709. https://dx.doi.org/10.1002/ejic.201901100

MLA:

Kriesten, Martin, et al. "Shaping of Flexible Metal-Organic Frameworks: Combining Macroscopic Stability and Framework Flexibility." European Journal of Inorganic Chemistry 43 (2019): 4700-4709.

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