ONE-STEP PREPARATION OF POLYMER-SUPPORTED COLLOIDAL PALLADIUM CATALYSTS AND THEIR CATALYTIC PROPERTIES .1. SYNTHESIS AND CHARACTERIZATION

A novel method of preparing polymer-supported colloidal palladium cata lysts, a otic-step preparation method (OSPM), is reported. Polymer-sup ported colloidal metal catalysts were synthesized directly from monome rs and metallic precursor in one step. X-Ray photoelectron spectroscop y (XPS), transmission electron microscopy (TEM), scanning electron mic roscopy (SEM), electron diffraction spectroscopy (EDS), infrared (IR), inductively coupled plasma atomic emission spectroscopy (ICP-AES) and photomicroscopy were applied to characterize the structures of the po lymer catalysts and the distribution and dispersion of metal in the po lymer. The influence of the synthetic conditions on the synthesis and structures of the catalysts was studied. OSPM gives a new method to pr epare polymer-supported colloidal metal catalysts and is a far shorter process than the traditional preparation methods. The experimental re sults show that colloidal palladium particles in the polymer were ultr afine, highly dispersed and distributed uniformly.