Dynamic release/immobilization of Rh-homogeneous hydroformylation catalyst by polyoxometalate-MOF composite

by S. Sartipi, M. J Valero Romero, E. Rozhko, Z. Que, H. A. Stil, J. De With, F. Kapteijn, J. Gascon
Year: 2015 ISSN: DOI: 10.1002/cctc.201500330

Bibliography

S. Sartipi, M. J Valero Romero, E. Rozhko, Z. Que, H. A. Stil, J. de With, F. Kapteijn, J. Gascon, ChemCatChem 7 (2015) 3243-3247, Dynamic release/immobilization of Rh-homogeneous hydroformylation catalyst by polyoxometalate-MOF composite

Abstract

​Thermal treatment of phosphotungstic acid (PTA)-MIL-101(Cr) composites in the presence of hydroformylation catalyst RhH(CO)(PPh3)3 leads to immobilization of the homogeneous Rh complex within the metal–organic framework (MOF) scaffold by coordination of PTA-Rh. The Rh complex-containing MOFs are tested in the hydroformylation of 1-octene in which PTA competes with CO during ligand association. In the presence of the carbonyl ligand, the Rh complex is released from the MOF and behaves as a homogeneous catalyst. Therefore, the product spectra and selectivities of the Rh complex-containing MOFs are similar to those of RhH(CO)(PPh3)3. Upon CO evacuation, Rh recoordinates to PTA, allowing for easy recycling of this new pseudo-heterogeneous catalyst.

Keywords

Heterogeneous Catalysis Heterogenization Hydroformylation Metal–organic frameworks Rhodium