Preparation of Tubular (Ag /Fe2O3-Al2O3-Bentonite) Catalyst for CO and HC Removal from Gasoline Electricity Generators Emitted Gas

Abstract

Tubular catalyst (Ag/Fe₂O₃-Al₂O₃-Bentonite) has been prepared on calcined bentonite substrate, aluminum oxide and iron oxide, by impregnation method, in the inhitched on quartz tubes. This catalyst was characterized using (SEM) and energy dispersive X-ray analysis (EDX) were also performed. The results showed the presence of nanoclusters of different sizes (up to 400 nm) on the surface of the catalyst which has a heterogeneous chemical composition. Nitrogen adsorption on bentonite, alumina, the catalyst substrate and the catalyst were measured separately.  According to Brunauer, Emmett and Teller (BET) results, a decrease of surface area was observed as a result of adding different components to the above mentioned substrate. The conducting behavior was carried out using pulse flow method at different rates of (air +gas exhaust) and different temperatures in a vertical cylindrical reactor. The highest removal of CO was ̴ 99% at 320°C and a Weight Space Velocity (WHSV_CO) was 0.28 h^-1, and the highest removal of HC  62% at 360°C and WHSV_HC was 0.014 h^-1.