Immobilisation of a molecular epoxidation catalyst on UiO-66 and -67: the effect of pore size on catalyst activity and recycling.
Amino-functionalised metal-organic frameworks UiO-66 and -67 were post-synthetically modified with salicylaldehyde. A molybdenum complex was immobilised on the resulting materials. They were characterised by (13)C-MAS-NMR, XPS and PXRD to confirm immobilisation and stability. The immobilised complex is an active and reusable catalyst for olefin epoxidation with tert-butyl hydroperoxide (TBHP) as an oxidant. It is shown that the effective pore size, probed with Brunauer-Emmett-Teller (BET) surface area analysis and the number of amino groups affect the diffusion of reactants and products, as well as catalyst recycling.
Chair of Inorganic Chemistry/Molecular Catalysis, Catalysis Research Center and Department of Chemistry, Technische Universität München, Lichtenbergstraße 4, D-85747 Garching bei München, Germany. mirza.cokoja@tum.de fritz.kuehn@ch.tum.de.
Marlene
M
Kaposi
Mirza
M
Cokoja
Christine H
CH
Hutterer
Simone A
SA
Hauser
Tobias
T
Kaposi
Florian
F
Klappenberger
Alexander
A
Pöthig
Johannes V
JV
Barth
Wolfgang A
WA
Herrmann
Fritz E
FE
Kühn