2~10 nm sized metal nano-particles were uniformly loaded in porous activated carbon (AC) support and 10~100 nm sized metal nano-particles were completely covered on the surfaces of air flow channels of porous ceramic monolith. Metal nano-particles such as palladium (Pd), platinum (Pt), gold (Au), and silver (Ag) were formed on glucose (Gl) powder by using NPP (Nano Particles on Powder) process and the solid state metal nano-particles on the Gl are directly applied to be loaded on the porous supports. The metal nano-particles on Gl were uniformly loaded in porous AC or ceramic monolith support by simple mixing or filling process. Uniformly distributed metal nano-particles in the AC and on the ceramic supports were observed by SEM and TEM images. Chemical relativities of the Pd/AC and Pt/AC catalysts by NPP process were tested by hydrogenation reaction of acetophenone and catalytic performance of the Pd/AC catalyst was nearly two times higher than that by chemical processed one. Nano particle loading mechanisms in various porous media are discussed in terms of interaction between nano particles and nucleation sites and capillary effect comparing with conventional chemical re-oxidation process.
Journal: TechConnect Briefs
Volume: 3, Nanotechnology 2014: Electronics, Manufacturing, Environment, Energy & Water
Published: June 15, 2014
Pages: 284 - 287
Industry sectors: Advanced Materials & Manufacturing | Energy & Sustainability