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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 34, Number 4
BKCSDE 34(4)
April 20, 2013 

 
Title
Submicrospheres as Both a Template and the Catalyst Source. Silica Submicro-reactor Dotted with Palladium Nanoparticles as Catalysts
Author
Sung Min Kim, Tae Hwan Noh, Ok-Sang Jung*
Keywords
Heterogeneous catalyst, Palladium nanoparticles, Submicrospheres, Template, XPS
Abstract
Formation of the monodisperse submicrospheres consisting of ionic palladium(II) complexes, [(Me4en)Pd(L)]2(X)4 (Me4en = N,N,N',N'-tetramethylethylenediamine; L = bis(4-(4-pyridylcarboxyl)phenyl)methane; X− = BF4 − and ClO4 −), has been carried out without any templates or additives. The submicrospheres were coated with silicates, and then calcined in air at 550 °C for 1 h, to efficiently form hollow-spherical SiO2 submicro-reactors dotted with palladium(0) nanoparticles (PdNPs). That is, the submicrospheres act as both a template and a source of the palladium metal nanoparticles. The submicro-reactors containing nano-catalysts have been characterized by means of SEM, TEM, and XPS. Notably, the reactors were proved to be very effective for Suzuki-Miyaura cross-coupling and hydrogenation reactions.
Page
1127 - 1130
Full Text
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