TY - JOUR
T1 - Fabrication and characteristics of planar-type methane reformer using ceria-based oxygen permeable membrane
AU - Takamura, Hitoshi
AU - Ogawa, Masayuki
AU - Suehiro, Koichi
AU - Takahashi, Hiroo
AU - Okada, Masuo
N1 - Funding Information:
This work has been supported in part by Industrial Technology Research Grant Program in 2005 from New Energy and Industrial Technology Development Organization (NEDO) of Japan, CREST, Japan Science and Technology Agency, and Ministry of Education, Science, Sports and Culture, Grant-in-Aid for Scientific Research (B) under contraction No. 18360326.
PY - 2008/9/30
Y1 - 2008/9/30
N2 - This paper describes the fabrication of a planar-type methane reformer based on a composite-type oxygen permeable membrane and its reforming properties. The membrane reformer module comprising of (Ce0.85Sm0.15)O2-15 vol.%MnFe2O4 and a ferric stainless steel separator with a same thermal expansion coefficient was successfully developed. For the reformer module, high CH4 conversion, CO and H2 selectivity of 96%, 84%, and 89% were achieved, respectively. Based on an electrical conductivity isotherm, joule heat caused by oxygen permeation in the module was estimated to be approximately 8.4 W. In addition, the effect of ZrO2-doping on the mechanical properties and oxygen permeability of the composite material was investigated. The highest Zr-content sample, (Ce0.85Sm0.15)0.2Zr0.8O2-15 vol.% MnFe2O4, showed a tetragonal structure. As a result of the crystal structural change, superior mechanical properties of Young's modulus of 337 GPa and fracture toughness of 2.8 MPa m1/2 were obtained.
AB - This paper describes the fabrication of a planar-type methane reformer based on a composite-type oxygen permeable membrane and its reforming properties. The membrane reformer module comprising of (Ce0.85Sm0.15)O2-15 vol.%MnFe2O4 and a ferric stainless steel separator with a same thermal expansion coefficient was successfully developed. For the reformer module, high CH4 conversion, CO and H2 selectivity of 96%, 84%, and 89% were achieved, respectively. Based on an electrical conductivity isotherm, joule heat caused by oxygen permeation in the module was estimated to be approximately 8.4 W. In addition, the effect of ZrO2-doping on the mechanical properties and oxygen permeability of the composite material was investigated. The highest Zr-content sample, (Ce0.85Sm0.15)0.2Zr0.8O2-15 vol.% MnFe2O4, showed a tetragonal structure. As a result of the crystal structural change, superior mechanical properties of Young's modulus of 337 GPa and fracture toughness of 2.8 MPa m1/2 were obtained.
KW - Electrical conductivity
KW - Fracture toughness
KW - Partial oxidation of methane
KW - Porous oxygen sensor
KW - Tape-casting
KW - Young's modulus
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U2 - 10.1016/j.ssi.2008.04.001
DO - 10.1016/j.ssi.2008.04.001
M3 - Article
AN - SCOPUS:48349083394
VL - 179
SP - 1354
EP - 1359
JO - Solid State Ionics
JF - Solid State Ionics
SN - 0167-2738
IS - 27-32
ER -