title: Improvements of Pd/C Catalyst Support Characteristics by Various Physical Dispersion Methods.
abstract: Pd/C catalysts were prepared by ion exchange in aqueous solution. Physical dispersion methods including sonication, high share mixer and stirrer were used for though high dispersion of carbon. The physical properties of the prepared Pd/C particles were investigated by BET, XRD, and FE-TEM. The dispersion of Pd nanoparticles on carbon was measured on the basis of CO adsorption capacity using a pulse technique. FE-TEM micrographs showed that Pd nano particles possessed a spherical morphology with a narrow size distribution, with particles sizes ranging from 2-25 nm. The Pd particles prepared using sonication and high share mixer are well dispersed compared to the stirrer method. In addition, metal dispersions as calculated by CO uptake were 11.3, 20.4, and 25.0% for the stirrer, sonication and high share mixer methods, respectively.
authors.forename: Jae Ho
authors.initials: JH
authors.lastname: Baek
authors.forename: Ji Sun
authors.initials: JS
authors.lastname: Kim
authors.forename: Myung-Jun
authors.initials: MJ
authors.lastname: Moon
authors.forename: Man Sig
authors.initials: MS
authors.lastname: Lee