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1. Leibniz-Institute for Catalysis e.V. at the University of Rostock, Albert-Einstein-Str. 29a, Rostock 18059, Germany
2. PA Partikel-Analytik-Messgeräte GmbH, Augustinusstr. 9a, Frechen 50226, Germany
3. Institute of Chemistry, University of Rostock, Albert-Einstein-Str. 3a, Rostock 18059, Germany.
4. Sigmar Mothes Hochdrucktechnik GmbH, Volmerstr. 7b, Berlin 12489, Germany


The metal-organic framework MÒ-5 has been synthesized by solvothermal method. Obtained material consists of nano-sized particle of ca. 100 nm size. The material has been physico-chemical characterized regarding structural and textural properties by XRD, FTIR, nitrogen adsorption/desorption, thermal analysis and ESA experiments. Palladium supported MOF-5 catalyst has been prepared by adsorption inclusion method. The catalyst was activated by treatment with supercritical carbon dioxide (scCO2) followed by mild reduction with hydrogen solved in scCO2. The obtained catalyst is shown to be stable and active and shape selective in hydrogenation reactions of alkenes using supercritical carbon dioxide as reaction medium. The catalytic active Pd species are located inside the pores. Positive surface charging seems to prevent deposition of active species at the crystal surface of the MOF. The catalyst is long time stable and re-useably. These findings show the potential of porous MOFs for applications under supercritical conditons and resisted repeated pressuring to 120 bar at elevated temperature.


Metal-organic framework, MOF-5, supercritical CO2, catalysis, hydrogenation, catalyst preparation.

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