화학공학소재연구정보센터
Journal of Molecular Catalysis A-Chemical, Vol.182, No.1, 209-214, 2002
New application of spray reaction technique to the preparation of supported gold catalysts for environmental catalysis
Taking the advantage of the characteristic preparation method of nanocomposites particles, spray reaction was applied for the preparation of supported gold catalysts, i.e., Au/TiO2 and Au/Al2O3. The structure and the physical properties were characterized by means of powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), EXAFS and BET measurements. The exposed surface sites of metal were estimated by CO and/or NO adsorption. The marked catalytic activities for CO oxidation and NO-CO reaction were discussed in terms of the enhancement of synergistic effects due to the characteristic nanostructures. (C) 2002 Published by Elsevier Science B.V.