Preparation and Characterization of AuNP/Al2O3 with Bimodal Nanoporous Structure

Young Hun Kim; Ji Bong Joo; Woo Young Kim; Jeong Jin Lee; Jong Heop Yi

doi:10.4028/www.scientific.net/SSP.135.53

Paper Titles

Conductive Property of Carbon-Nanotube Dispersed Nanocomposite Coatings for Steel
p.35

Preparation of Platinum-Ruthenium Nanoparticles on Graphite Nanofibers
p.39

Thermal Behaviors and Fracture Toughness of Polyurethane-Dispersed Difunctional Epoxy Resins
p.43

Influence of Multiwalled Carbon Nanotube on Rheological Behavior of Mesophase Pitches
p.47

Preparation and Characterization of AuNP/Al₂O₃ with Bimodal Nanoporous Structure
p.53

The Effect of Physicochemical Treatment on Pd Dispersion of Carbon-Supported Pd Catalysts
p.57

The Effect of Si/Al Ratio on Selective Catalytic Reduction of NOx with NH₃ over Pt/Al-SBA-15
p.61

Effect of Ball-Milling Method on the Formation of ODS Fe-14Cr-2Al-1Si-0.3Ta-1Y₂O₃ Powders
p.65

Nano-Sized Yttria Dispersed Ferritic Stainless Steels for SOFC Interconnect Applications
p.69

HomeSolid State PhenomenaSolid State Phenomena Vol. 135Preparation and Characterization of AuNP/Al2O3...

Preparation and Characterization of AuNP/Al₂O₃ with Bimodal Nanoporous Structure

Abstract:

AuNP (gold nanoparticle) supported by oxide shows a high reactivity for a PROX (preferential oxiation) reaction at low temperature. Au catalysts were usually prepared by conventional methods such as precipitation, impregnation and vapor phase grafting. In this study, we developed a novel method for the preparation of AuNPs supported on a bimodal nanoporous alumina. The AuNPs were prepared in a toluene phase by the modified Brust method. The metal particle size was able to be controlled from 2 to 50 nm via the control of the surfactant concentrations. The resulting materials were characterized by BET, FE-SEM, TEM, and XRD analyses. After calcinations at 700oC, AuNP/Al2O3 catalyst revealed a bimodal nanoporous structure, with the pore sizes of 3.5 and 7 nm, and demonstrated both a high surface area (350 m2/g) and pore volume (0.9 cm3/g).