Submicrospheres as Both a Template and the Catalyst Source. Silica Submicro-reactor Dotted with Palladium Nanoparticles as Catalysts

Bulletin of the Korean chemical society

Ok-Sang Jung¹  Sung Min Kim¹  Tae Hwan Noh¹ 

关键词: Heterogeneous catalyst;    Palladium nanoparticles;    Submicrospheres;    Template;    XPS;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

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.

【 授权许可】

Unknown