Download Metal Organic Frameworks (MOFs) are 3-dimensional

DEFect NETwork Materials Science and Engineering
Marie Sklodowska-Curie European Training Network (MC-ETN)
H2020-MSCA-2014-ITN
http://www.defnet-etn.eu/
Hans-Hilmar Mautschke, ITQ-ESR-8
ITQ Valencia, Spain
Multifunctional Defect Engineered UiO-type catalysts
Metal Organic Frameworks (MOFs) are 3-dimensional network materials build
up by inorganic metal clusters interconnected through organic linker
molecules. The crystalline structure of those materials gives raise to super high
porosity and surface areas, which makes those materials suitable candidates
for heterogeneous catalysts. So far MOFs have been applied successfully in
different fields like gas sorption/separation, drug delivery and catalysis, even
though there are still no industrial relevant applications for these materials.
Many attempts have been made to tailor the properties of MOFs to tune
catalytic properties, e.g. grafting, postsynthetic modification (PSM) or
encapsulation for the creation of coordinatively unsaturated sites (CUS’s), additional functionalities
at linker molecules and others. The high variability in pore size and metal centers is superior to
related materials like zeolites, where the number of building units is rather limited. MOFs containing
hexanuclear ZrO clusters like the ones found in the UiO-66 structure are chemical and thermally
quite stable compounds, due to the high coordination number of the zirconium atoms. Defects
within the structure have been
found as one important feature to
enhance catalytic activity and to
create Lewis- or Brønsted-acid
sites. The aim of this work and
DEFect NETwork materials science
and engineering project is the
synthesis of defective zirconium
containing MOFs and their use as
heterogeneous acid catalysts in
reactions like hydrogen transfer
reactions,
esterificationor
cyclization reactions. Beside Zr
other metals (such as Hf, Ce or mixed metal systems) will be introduced. Materials with defective or
functionalized linkers will be prepared and evaluated.
Funded by the European Commission; Call: H2020-MSCA-ITN-2014