Kinetics of the methanation of CO and CO2 on a nickel catalyst

摘要: Abstract The kinetics of the methanation CO2 in H2 on a supported nickel catalyst have been measured at partial pressures below 0.02 atm and atmospheric pressure temperatures between 200 230 °C. CO was studied same concentration range, 170 210 results can be described by rather simple Langmuir-type rate equations: r 2 = 1.36 × 10 12 · exp ( −25 300 RT ) p (1+1270 mol hr −1 g 2.09 5 −10 100 (1+4.56 −4 +12 400 Experiments °C show that poisons concentrations larger than ppm. Water methane small no effect reaction rate. this study are good agreement with data published previously. Some mechanistic implications kinetic discussed.