Heterogenization of an organorhenium(VII) oxide on a modified mesoporous molecular sieve.
A novel route to heterogenize an organorhenium(VII) oxide, derived from the well examined methyltrioxorhenium(VII) (MTO), on the surface of an iodosilane-modified MCM-41 is applied. The successful grafting of the -CH(2)-ReO3 moiety on the surface was evidenced by 1H CP MAS NMR, IR spectroscopy, TG-MS, and elemental analysis. XRD and TEM analyses confirm the retaining of long-range ordering throughout the grafting process. The rhenium loading of the mesoporous material after heterogenization of MTO is found to be 1.25 wt%. Despite containing formally a derivative of the very sensitive benzyltrioxorhenium(VII) the material is stable at room temperature and applicable as a heterogeneous catalyst for aldehyde olefination reactions.
Sakthivel
Ayyamperumal
A
Lehrstuhl für Anorganische Chemie der Technischen Universität München, Lichtenbergstrasse 4, D-85747, Garching bei München, Germany.
Raudaschl-Sieber
Gabriele
G
Kühn
Fritz E
FE
D000447:Aldehydes / Q000737:chemistry; D000475:Alkenes / Q000737:chemistry; D002384:Catalysis; D046529:Microscopy, Electron, Transmission; D009942:Organometallic Compounds / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D010316:Particle Size; D016062:Porosity; D012211:Rhenium / Q000737:chemistry*; D013816:Thermodynamics
D000447:Aldehydes; D000475:Alkenes; D009942:Organometallic Compounds; D010087:Oxides; D012211:Rhenium; C411866:methyltrioxorhenium VII