Effect of infiltration material on a LSM15/CGO10 electrochemical reactor in the electrochemical oxidation of propene

NOx and propene conversion on La0.85Sr0.15MnO3+d/Ce0.9Gd0.1O1.95 symmetrical cells

“…The increase of C and decrease of the resistance of this arc with increasing temperature indicates that the responsible process is related to the extension or broadening of the three-phase boundary [34]. The Ea corresponding to this process increased for both cells with the non-infiltrated and BaO-infiltrated electrodes, when propene was introduced in the gas feed.…”

“…The values of Ea are in good agreement with previous findings of our group [33,35], where the processes related to the corresponding arc were stated as adsorption, surface diffusion and transfer across the triple-phase boundary (TPB). The sensitivity of Ea in the presence of propene was reasonable since different species will adsorb in two atmospheres, while propene is believed to interact with adsorbed oxygen [34]. For these reasons, the Arc III is ascribed to the triple-phase boundary that is related to adsorption, diffusion and/or charge transfer involving oxygen and nitric oxide species.…”

Effect of Co3O4 and Co3O4/CeO2 Infiltration on the Catalytic and Electro-catalytic Activity of LSM15/CGO10 Porous Cells Stacks for Oxidation of Propene

“…The reaction temperature was monitored by two thermocouples: one touching the cell and the other one placed 4 mm over the cell. The detailed description of the test setup can be found elsewhere [12].…”

Determination of the Resistance of Cone-Shaped Solid Electrodes

“…for use as infiltrate materials in an electrode backbone structure of good electronic conductivity due to their catalytic activity. 2 It is therefore desirable to be able to evaluate the electro-catalytic properties of an electrode material independent of layer thicknesses and microstructural parameters.…”

“…In practice it can be applied to an electrolyte, which has an extension bigger than 5d. 4 In the case of an electrode with low electronic conductivity, the total ohmic resistance found from impedance spectroscopy stems from both the electrolyte, R elyt , and the electrode, R cone R total = R cone + R elyt [2] Hence, the resistance of the cone must be expressed as a function of the contact diameter, after which a final expression for the contact area diameter can be established by solving of Eqs. 1 and 2 for the contact diameter.…”