F. X. L. I. Xamena, O. Casanova, R. G. Tailleur
Apr 25, 2008
Citations
1
Influential Citations
255
Citations
Quality indicators
Journal
Journal of Catalysis
Abstract
Abstract Two metal–organic frameworks, [Cu(2-pymo) 2 ] and [Co(PhIM) 2 ] (2-pymo = 2-hydroxypyrimidinolate; PhIM = phenylimidazolate), containing respectively Cu 2+ and Co 2+ ions and anionic diazaheterocyclic ligands (pyrimidinolate and phenylimidazolate) as organic linkers, have been successfully used for the aerobic oxidation of tetralin, yielding α -tetralone (T O) as the main product. Both materials are stable and recyclable under the reaction conditions. Kinetic studies revealed significant differences between the two MOFs, as a consequence of the different catalytic behavior of their central metal ions. [Cu(2-pymo) 2 ] is highly active for the activation of tetralin to produce tetralinhydroperoxide (T OOH), and less efficient in reacting the peroxide. Meanwhile, the use of the cobalt catalyst involves a long induction period for the reaction. However, once T OOH is formed, Co 2+ rapidly and efficiently transforms this into T O, with high tetralone-to-tetralol ratio (T O/T OH of ca . 7). The combination of both materials has revealed as a convenient strategy for preparing a highly efficient, selective and reusable catalyst for the liquid phase aerobic oxidation of tetralin.