Heats of adsorption of the linear CO species on a Pt/Al2O3 catalyst using FTIR spectroscopy

Heat of adsorption of CO on EUROPT-1 using the AEIR method: Effect of analysis parameters, water and sample mode

“…The overlap of the two symbols shows the good reproducibility of the data on the reconstructed Pt surface. According to the AEIR method [26,37,38], the heat of adsorption of the L CO species is obtained by comparison between the experimental data and a theoretical curve obtained using the Temkin model:…”

Oxidation of CO on a Pt/Al2O3 catalyst: from the surface elementary steps to light-off tests V. Experimental and kinetic model for light-off tests in excess of O2

“…Step S1 corresponds to an adsorption equilibrium and the heats of adsorption of the L CO species at several coverages θ L (denoted by EL θ L ) have been determined by using a new experimental procedure (denoted by AEIR [6]: adsorption equilibrium infrared spectroscopy). It has been shown that (a) EL θ L linearly decreases with the increase θ L from EL 0 = 206 to EL 1 = 115 kJ/mol [6][7][8][9] and (b) it is not affected by the presence of O 2 [4,10].…”

“…It has been shown that (a) EL θ L linearly decreases with the increase θ L from EL 0 = 206 to EL 1 = 115 kJ/mol [6][7][8][9] and (b) it is not affected by the presence of O 2 [4,10]. Steps S2 and S3 have been characterized studying the kinetics of the oxidation of the L CO species at T < 350 K with x% O 2 /He mixtures [1,2].…”

Adaptive Global Carbon Monoxide Kinetic Mechanism over Platinum/Alumina Catalysts

“…This range exists because both of these parameters change as a function of the surface coverage of adsorbed species [40,43,66,[72][73][74][75]…”

“…For CO, the authors employ a lumped approach including both the activation energies for adsorption and desorption. In particular, the literature via Table 2 illustrates that the total adsorption heat of this species changes as a function of surface coverage that varies with temperature [72][73][74]. As a result, the authors model CO adsorption with a temperature dependence:…”