Determination of Kinetic Parameters for CO 2 Methanation (Sabatier Reaction) over Ni/ZrO 2 at a Stoichiometric Feed-Gas Composition under Elevated Pressure
Methanation of CO 2 using H 2 obtained by renewable energy sources has been gaining attention as one of the promising options for utilizing captured CO 2 and surplus power obtained when intermittent power sources such as solar and wind energy are used. Herein, kinetics of CO 2 methanation over Ni/ZrO 2 was studied using a tubular quartz reactor at 0.9 MPa. The Sabatier reaction (CO 2 + 4H 2 = CH 4 + 2H 2 O, Δ H r 298K = – 165 kJ mol –1 ) was carried out under stoichiometric gas feeding (CO 2 /H 2 = 1/4 v/v to CH 4 /H 2 O = 1/2 v/v), and its reaction rate was determined. The exothermic nature o... Mehr ...