钯负载的周期性介孔有机硅的制备及其在铃木交叉偶联反应中作为催化剂的应用。

Preparation of Palladium-Supported Periodic Mesoporous Organosilicas and their Use as Catalysts in the Suzuki Cross-Coupling Reaction.

作者信息

Corral Jorge A, López María I, Esquivel Dolores, Mora Manuel, Jiménez-Sanchidrián César, Romero-Salguero Francisco J

机构信息

Department of Organic Chemistry, Nanochemistry and Fine Chemistry Research Institute (IUIQFN), Faculty of Sciences, University of Córdoba, Campus de Rabanales, Marie Curie Building, Ctra. Nnal. IV, km 396, Córdoba 14071, Spain.

Department of Inorganic and Physical Chemistry, Center for Ordered Materials, Organometallics and Catalysis (COMOC), Ghent University, Krijgslaan 281, Building S3, Ghent 9000, Belgium.

出版信息

Materials (Basel). 2013 Apr 17;6(4):1554-1565. doi: 10.3390/ma6041554.

Three periodic mesoporous materials, , 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. Pd 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.