Ae. Aksoylu et al., THE EFFECT OF METAL LOADING ON THE ADSORPTION PARAMETERS OF CARBON-DIOXIDE ON COPRECIPITATED NICKEL-ALUMINA CATALYSTS, Turkish journal of chemistry, 20(1), 1996, pp. 88-94
A coprecipitation method has been developed and modified for the prepa
ration of nickel-alumina catalysts having metal loadings in the 0-25 w
t% Ni range. The effect of metal loading on CO2 adsorption was investi
gated under isothermal chromatographic conditions using an elution tec
hnique in the temperature range 483-533 K. Average enthalpies of adsor
ption were determined using the isosteres obtained from the experiment
al adsorption isotherms. The isotherms were also fitted to the Langmui
r equation for the evaluation of adsorption equilibrium coefficients,
Gibbs free energies, average adsorption enthalpies and entropies.