A Mesoporous Zirconium-Isophthalate Multifunctional Platform
2021
Mesoporous materials suffer from
limitations including poor crystallinity and hydrolytic stability, lack of
chemical diversity, insufficient pore accessibility, complex synthesis and
toxicity issues. Here the association of non-toxic Zr-oxo clusters and
feedstock isophthalic acid (IPA) via a Homometallic-Multicluster-Dot strategy results
in a robust crystalline mesoporous MOF, denoted as MIP-206, that overcomes the
aforementioned limitations. MIP-206, built up from an unprecedented combination
of Zr6 and Zr12 oxo-cluster inorganic building units into
a single structure, exhibits accessible meso-channels of ca. 2.6 nm and displays
excellent chemical stability under different hydrolytic and harsh conditions. Owing
to the abundant variety of functionalized IPA linkers, the chemical environment
of MIP-206 can be easily tuned without hampering pore accessibility due to its
large pore windows. As a result, MIP-206 loaded with palladium nanoparticles acts
as an efficient and durable catalyst for the dehydrogenation of formic acid
under mild conditions, outperforming benchmark mesoporous materials. This paves
the way towards the utilization of MIP-206 as a robust mesoporous platform for
a wide range of potential applications.
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