Preparation of Palladium-Supported Periodic Mesoporous Organosilicas and their Use as Catalysts in the Suzuki Cross-Coupling Reaction
View/ Open
Author
Corral, Jorge A.
López, María I.
Esquivel, Dolores
Mora, Manuel
Jiménez-Sanchidrián, César
Romero-Salguero, F.J.
Publisher
MDPIDate
2013Subject
Periodic mesoporous organosilicaPalladium nanoparticles
Hydrogen chemisorption
Temperature programmed reduction
Pd-supported catalysts
Suzuki cross-coupling
METS:
Mostrar el registro METSPREMIS:
Mostrar el registro PREMISMetadata
Show full item recordAbstract
Three periodic mesoporous materials, i.e., two organosilicas with either ethylene
or phenylene bridges and one silica, have been used as supports for Pd nanoparticles. All
Pd-supported samples (1.0 wt%) were prepared by the incipient wetness method and
subsequently reduced in an H2 stream at 200 °C. Both hydrogen chemisorption and
temperature programmed reduction experiments revealed significant differences depending
on the support. Pd2+ species were more reducible on the mesoporous organosilicas than on
their silica counterpart. Also, remarkable differences on the particle morphology were
observed by transmission electron microscopy. All Pd-supported samples were active in
the Suzuki cross-coupling reaction between bromobenzene and phenylboronic acid