Preparation and Characterisation of Nano Gold Particles Containing Novel Micro and Macro Porous Catalytic Materials

New nano gold catalytic systems made up of nano gold particles supported on macroporous (rare earth metal -dysprosium oxide) and microporous silico-aluminophosphate of type 18 materials were synthesized. These nano materials were characterized using routine and sophisticated (XAS, ICP-MS, TGA, TEM, XRD and BET) instrumentation techniques (for studying different nano gold catalytic systems). Au L3 edge X-ray absorption spectroscopic measurements were carried out over a series of supported gold nanoparticles to understand the typical characteristics and structure of gold nanoparticles in these materials. The size of gold nanoparticles varied in the range of ~2 to 6 nm in these materials. These materials possess medium to high surface area between 50 to 480 m²/g. The XRD analysis of the samples indicated the high phase purity and crystallinity of the dysprosium oxide and SAPO-18 support materials.