Fabrication and characteristics of planar-type methane reformer using ceria-based ozygen permeable membrane
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 Youngs modulus of 337 GPa and fracture toughness of 2.8 MPa m1/2 were obtained.
Partial ozidation of methane Tape-casting Electrical conductivity Porous ozygen sensor Youngs modulus Fracture toughness
Hitoshi Takamura Masayuki Ogawa Koichi Suehiro Hiroo Takahashi Masuo Okada
Department of Materials Science, Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki A Department of Materials Science, Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki A
国际会议
The 16th International Conference on Solid State Ionics(第十六届国际固态离子学会议)
上海
英文
1354-1359
2007-07-01（万方平台首次上网日期，不代表论文的发表时间）