Özet:

In this study, Ag-Cu-Ce/TiO2 catalyst was produced by using impregnation method for hydrocarbon-selective catalytic reduction (HC-SCR) system. In this system, as a reducing agent ethyl alcohol and urea solution mixture was used. The NOx conversion efficiency of the system with using synthesized catalyst was analyzed. Chemical and structural properties of the used catalyst were examined by SEM, BET and XRD analyzes. In the SCR test system, the experiments were conducted in different temperatures ranged from 200 C to 300 C in constant gas hourly space velocity (GHSV) (30000 h-1). The tests were carried out by using 2 cylinders, V-type diesel engine with constant speed (3000 rpm) under 3 different loads (1 kW, 3 kW and 5 kW). These tests identified the effects of produced catalyst on NOx conversion rate of SCR system. In result, NOx conversion rates were measured between 66 % and 93 %. In 1 kW load, at 300 C, SV= 30000 h-1, 100% ethyl alcohol spraying the NOx conversion rate was reached approximately to 93% which is the highest point.

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