TY - JOUR

T1 - Hydrogen production aided solid oxide electrochemical reformer fed with octane

T2 - A theoretical analysis

AU - Murashkina, A. A.

AU - Maragou, V. I.

AU - Demin, A. K.

AU - Pikalova, E. Yu

AU - Tsiakaras, P. E.

PY - 2008/7/1

Y1 - 2008/7/1

N2 - In the present work the possibility of pure hydrogen production by a solid oxide electrochemical reformer (SOER) is examined. Initial reagents are water steam, flowing into the cathode channel and octane flowing into the anode channel. Three modes of reforming are considered: (i) steam reforming (SR-mode), (ii) preliminary octane partial oxidation (PO-mode) and (iii) preliminary octane reforming by exhaust anode gas recycling (EAGR-mode). A parametric analysis is carried out that can be easily applied for various hydrocarbons. It was found that the electromotive force (EMF) value depends mainly on the ratio of steam moles' number supplied to the cathode space to the number of hydrogen output moles (k-parameter). It was also found that EMF increases with k increase, while is weakly affected from the temperature and the heat losses amount. Moreover, the EMF average value under the PO-mode is lower than that under the SR-mode. Finally, it is shown that the SOER optimum characteristics can be reached under the EAGR-mode, since it provides the most favorable combination of the reforming efficiency and the rate of the electrochemical process.

AB - In the present work the possibility of pure hydrogen production by a solid oxide electrochemical reformer (SOER) is examined. Initial reagents are water steam, flowing into the cathode channel and octane flowing into the anode channel. Three modes of reforming are considered: (i) steam reforming (SR-mode), (ii) preliminary octane partial oxidation (PO-mode) and (iii) preliminary octane reforming by exhaust anode gas recycling (EAGR-mode). A parametric analysis is carried out that can be easily applied for various hydrocarbons. It was found that the electromotive force (EMF) value depends mainly on the ratio of steam moles' number supplied to the cathode space to the number of hydrogen output moles (k-parameter). It was also found that EMF increases with k increase, while is weakly affected from the temperature and the heat losses amount. Moreover, the EMF average value under the PO-mode is lower than that under the SR-mode. Finally, it is shown that the SOER optimum characteristics can be reached under the EAGR-mode, since it provides the most favorable combination of the reforming efficiency and the rate of the electrochemical process.

KW - Hydrogen production

KW - Partial oxidation

KW - Reforming by exhaust anode gas

KW - Solid oxide electrochemical reformers

KW - Steam reforming

UR - http://www.scopus.com/inward/record.url?scp=44149127018&partnerID=8YFLogxK

U2 - 10.1016/j.jpowsour.2007.12.069

DO - 10.1016/j.jpowsour.2007.12.069

M3 - Article

AN - SCOPUS:44149127018

VL - 181

SP - 304

EP - 312

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

IS - 2

ER -