Change of reaction quotients for SOFC fueled by biogas mixture at 750 C

Opis

The dataset contains the Change of reaction quotients for SOFC fueled by biogas mixture at 750 C (60:40 CH4:CO2). The outlet concentration of the gases from SOFC were measured using novel FTIR-based unit.

Measurement procedure:

"Several approaches concerning equilibrium calculations for methane reforming were already mentioned in other publications [45], [46], [47], [48]. In order to determine the behaviour of each from series of mentioned reactions, a time-dependent thermodynamic analysis was performed using reaction quotients (Q_r) [45], [46], [49], which represent a ratio between an actual non-equilibrium constant and equilibrium constant of a specific reaction. Q_r value aids in figuring out the momentary direction in which reactions are likely to proceed. Mathematically Q_r is calculated from Eq. (24) as a ratio of actual overall partial pressures p_i of species "i" raised to the power of stoichiometric coefficient x_i (positive for products and negative for reactants) and equilibrium constant K_p,r of discussed reaction. Each of the mentioned reactions was taken into account separately for Q_r value estimation in order to simplify the calculation method while providing sufficient enough data for further analysis of equilibrium shifting. All theoretical equilibrium constants K_p were taken from the HSC Chemistry^TM software. [...] Quotient indicates if the mentioned reaction goes to the right (for Q_r < 1) or to the left (for Q_r > 1). When Q_r = 1 reaction has reached an equilibrium point. It is commonly approved that Q_r∼10⁻³ stands for the situation when mostly reactants are present in reaction area, while Q_r∼10³ when nearly all substances are products and finally if 10⁻³<Q_r < 10³ then significant amounts of both reactants and products are visible " (10.1016/j.ijhydene.2019.03.243)

Plik z danymi badawczymi

Qr reaction quotients of reforming proceses.xlsx

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Rok publikacji:

2021

Data zatwierdzenia:

2021-04-27

Data wytworzenia:

2020

Język danych badawczych:

angielski

Dyscypliny:

inżynieria materiałowa (Dziedzina nauk inżynieryjno-technicznych)

DOI:

10.34808/pwpx-gv31

Finansowanie:

Anodowe materiały katalityczne dla tlenkowych ogniw paliwowych bezpośrednio zasilanych biogazem (DIR-SOFCs)

Seria:

DIR-SOFC

Weryfikacja:

Politechnika Gdańska

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