Carbon supported nano-sized Au catalysts for toluene removal in humid condition
Abstract
In this study,one-step impregnation methodwas successfully used in preparation of gold nanoparticles supporting on granular carbon. By this method, in the presence of Fe2O3the size of Au particles was 10÷15 nm which was smaller than that in the absence of Fe2O3. Thecatalysts were characterized to evaluate crystalline structure, surface properties and morphology.These materials are then used for catalytic oxidation of toluene under various conditions such as temperature, moisture content and gas hourly space velocity (GHSV).Results showed that the catalyst exhibited catalytic oxidationactivity even at low temperatures (at 75°C). Inverse effects of moisture were observed between low temperature reaction (75°C) and high temperature reaction (200°C).
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