چكيده به لاتين
Nowadays the release of SOX compounds due to Mining of metals from mines and the Consumption of fossil fuels causes a risk to human's health and damages the environment. Methods for removing SOX compounds include wet scrubbers, dry scrubbers and catalytic process. The catalytic method is the most suitable method for removing SOX compounds due to its good properties such as high activity, low cost, less negative effects on the environment and its possibility to be regenerated. The SBA-15 porous silicate compounds are used as a supported for flue gas desulfurization (FGD) due to features such as high surface area, appropriate pore size, and high thermal and mechanical stability. In this study, CuO nanocatalysts with weight percentages of 8.7% and 3.1% supported SBA-15 were prepared by impregnation and post-grafting methods and characterized by X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS) and N2 adsorption-desorption methods. The results reactor tests showed that nanocatalysts synthesized with impregnation method compared grafting method have a significant performance. According to the reactor tests, the optimum values for the reaction temperature, the amount of nanocatalysts and the gas hourly space velocity (GHSV) were 400 ° C, 200 mg and 65000 cm3/g.h, respectively, at flow rate of 13 NL/ h. Also, 8.7% CuO/SBA-15-imp nanocatalyst has been high efficiency of 93.2% compared to 3.1% CuO/SBA-15-imp and 8.7% CuO/SBA-15-chl nanocatalycts with efficiency of 65% and 80%, respectively, in conversion of SO2.