Low temperature atalytic oxidation of carbon monoxide and hydrocarbons have been studied by a large number of researchers due to its signifiance in environmental pollution control. These toxic gases are formed by incomplete combustion from car engines. In this work ethylene was chosen because it is commonly used as a substitute test fuel for hydrocarbon fuels and is usually an intermediate product in combustion of heavy hydrocarbons. Cobalt-silver composite oxide catalysts were synthesized by coprecipitation from an aqueous solution of cobalt nitrate and silver nitrate. The effets of silver loading (5, 10, 20 %) and calcination temperature (250, 350, 450 ℃) were investigated. The BET surfae area, XRD and deactivation curve were used to described these effects on catalytic activity. It was found that the 10% ag/Co₃O₄ calcined at 250 ℃ was the most suitable for both carbon monoxide and ethylene oxidation. Besides, the kinetics of both reactions were studied to find their reaction orders and activation energies.
Catalysts -- Synthesis
ตัวเร่งปฏิกิริยา -- การสังเคราะห์
Central Library : Stack (Contact Staff)
Thailand and ASEAN Information Center (6th Floor) : Chula Collection