Arada ChaiyanurakkulLei GaoTakashi NishikataKeisuke KojimaHideo NagashimaKyushu UniversityMahidol UniversityNissan Chemical Industries, LtdJapan Science and Technology Agency2018-11-092018-11-092014-01-01Chemistry Letters. Vol.43, No.8 (2014), 1233-123513480715036670222-s2.0-84906516090https://repository.li.mahidol.ac.th/handle/123456789/33658© 2014 The Chemical Society of Japan. Platinum nanoparticles dispersed in the ammonium salts of hyperbranched polystyrene, Pt@HPS-NR3Cl, catalyzed the hydrogenation of ketones and aldehydes when water was used as the solvent without any coexisting organic solvents. The significant increase in the reaction rate was observed when an organodispersible Pt@HPS-N+(C8H17)3Cl-(1a) was used as the catalyst, whereas catalyst recycling was achieved with water-dispersible Pt@HPS-N+(C4H9)3Cl-(1b).Mahidol UniversityChemistryArticleSCOPUS10.1246/cl.140334