Tuning the properties of the UiO-66 metal organic framework by Ce substitution

Abstract

Replacement of Zr by Ce in a metal organic framework gives defects and redox activity for use in heterogeneous catalysis.

Abstract

Crystallisation of a mixed-metal form of the porous framework UiO-66 in which Zr is partially replaced by Ce produces a ligand-defective material, that contains some Ce( iii) as well as a majority of Ce( iv). Infrared spectroscopy shows enhanced binding of methanol in the substituted material that leads to catalytic decomposition of the alcohol, which may be due to a combination of defects and redox activity.