M. Moradi, J. T. Daryan, A. Mohamadalizadeh
May 1, 2013
Citations
1
Influential Citations
25
Citations
Journal
Fuel Processing Technology
Abstract
Abstract Catalysts of sodium silicate and cadmium oxide supported on silicon carbide nanopowders were synthesized and used in catalytic oxidation of H 2 S to elemental sulfur. The effect of temperature (from 150 to 250 °C); gas hour space velocity (from 2000 to 4000 h − 1 ) and sodium:cadmium weight ratio (from 1 to 5), on the conversion of H 2 S were studied by a Box–Behnken experimental design method. A quadratic regression equation was developed to describe relationship between the operating conditions and the response. The significance of main factors and their quadratic interactions on the conversion of H 2 S in catalytic oxidation were examined by means of the analysis of variance (ANOVA). The results showed that temperature had the most significant effect on H 2 S conversion compared with other two variables. F value of 29.46, coefficient of determination (R 2 ) of 0.9779, adjusted-R 2 of 0.9447, absolute average deviation (AAD) of 0.29% and, coefficient of variation (CV) of 0.59%, implied the satisfactory adjustment of the quadratic model. The results indicated that up to 100% H 2 S conversion was obtained at the optimum conditions.