Journal
TOPICS IN CATALYSIS
Volume 56, Issue 9-10, Pages 770-782Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s11244-013-0027-0
Keywords
Zirconium; DRIFTS; MOF; Stable; Catalysis; TG-DSC; Chlorine
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Funding
- Research Council of Norway [174893, NN4683K]
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Herein, the desolvation, dehydroxylation and rehydroxylation of the metal organic frameworks UiO-66 and -67 are followed by in situ DRIFTS and TG-DSC. The spectra recorded on UiO-66 feature multiple bands corresponding to chemically inequivalent isolated hydroxyl groups, whereas UiO-67 has the expected single mu(3)-OH band from the Zr6O4(OH)(4) cornerstone. Complete rehydration is demonstrated on both materials. Based on further experimental insights, hypotheses are given to explain the observed differences between UiO-66 and -67. Quantum chemical calculations are employed in order to deduce the feasibility of one possible explanation for the observed behaviour on UiO-66.
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