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A Titanium(IV)‐based metal–organic framework featuring defect‐rich Ti‐O sheets as an oxidative desulfurization catalyst

DOI: 10.1002/anie.201904347 DOI Help

Authors: Simon Smolders (KU Leuven) , Tom Willhammar (Stockholm University) , Andraž Krajnc (National Institute of Chemistry, Slovenia) , Kadir Sentosun (University of Antwerp) , Michael T. Wharmby (Deutsches Elektronen-Synchrotron Source) , Kirill A. Lomachenko (European Synchrotron Radiation Facility) , Sara Bals (University of Antwerp) , Gregor Mali (National Institute of Chemistry, Slovenia) , Maarten B. J. Roeffaers (KU Leuven) , Dirk E. De Vos (dirk.devos@kuleuven.be) , Bart Bueken (KU Leuven)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Angewandte Chemie International Edition

State: Published (Approved)
Published: May 2019

Abstract: While titanium‐based metal–organic frameworks (MOFs) have been widely studied for their (photo)catalytic potential, only a few TiIV MOFs have been reported owing to the high reactivity of the employed titanium precursors. The synthesis of COK‐47 is now presented, the first Ti carboxylate MOF based on sheets of TiIVO6 octahedra, which can be synthesized with a range of different linkers. COK‐47 can be synthesized as an inherently defective nanoparticulate material, rendering it a highly efficient catalyst for the oxidation of thiophenes. Its structure was determined by continuous rotation electron diffraction and studied in depth by X‐ray total scattering, EXAFS, and solid‐state NMR. Furthermore, its photoactivity was investigated by electron paramagnetic resonance and demonstrated by catalytic photodegradation of rhodamine 6G.

Journal Keywords: metal–organic frameworks; oxidative desulfurization; photocatalysis; Ti-oxo sheets; titanium

Subject Areas: Chemistry, Materials


Instruments: I15-1-X-ray Pair Distribution Function (XPDF)

Other Facilities: ESRF