Boreskov Institute of Catalysis of the Siberian Branch of Russian ...

PP-V-4Pt NANOPARTICLE-HOLLOW POROUS CARBONNANOCOMPOSITES AS THE MICROREACTORFOR REDUCTIVE AMINATIONT. Harada a, *, T. Sugita a , Y. Morita a , T. Torimoto b , S. Ikeda a , M. Matsumura aa Reserch center for solar energy chemistry, Osaka University, 1-3 Machikaneyama,Toyonaka, Osaka 560-8531, Japanb Department of Crystalline Materials Science, Graduate School of Engineering,Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan*E-mail: harada@chem.es.osaka-u.ac.jp, Fax: +81-6-6850-6699IntroductionIt is well-known that the metal nanoparticles (MNPs) are very active catalysts because oftheir large surface area and a great ratio of atoms remaining at the surface. However, theMNPs are usually stabilized by organic ligands such as polymers and surfactants to preventcoalescence to the bulk metal. This results in the coverage of their active metal surface byorganic ligand. Consequently, their intrinsic high catalytic activity is inhibited. Therefore, thesyntheses of MNPs-based heterogenous catalyst, which has the original catalytic activity ofMNPs are strongly desired. Numerous stabilized MNPs have been prepared by variousmethods, e.g., MNPs encapsulated in the mesoporous material and dendrimer, and have beenproved to catalyze a variety of reactions 1) . Recently, we reported the fabrication of Ptnanoparticle encapsulated in hollow porous carbon (Pt@hmC) and its high catalytic activityfor olefin and nitrobenzene hydrogenations 2) . This material is examined to have a suitablestructure leading to the intrinsically high catalytic activity. The unique structure of Pt@hmCovercomes the above mentioned problems of MNPs. In this study, the expansion of catalyticfunction of Pt@hmC for the reductive amination of aldehydes and ketones in the microreactorprovided by the hollow porous shell is investigated.ExperimentalThe typical preparation procedure of Pt@hmC is described in our previous paper 2) . Thecatalytic reactions of reductive amination of aldehydes and ketones were performed in aclosed test tube equipped with H 2 balloon at room temperature.464