Abstract
Dual-phase composite inorganic materials are used as membrane separator for oxygen production, solid oxide fuel cells for power generation, and membrane reactors for catalytic conversion of light hydrocarbons. A new structure of dense dual-phase membrane and its preparation method was presented. The new dual-phase membrane consisted of an oxygen ionic conducting (OIC) ceramic phase defined by compact packing of OIC ceramic particles and a three dimensional film of an electronic conducting (EC) phase covering the surface (or grain boundary) of the OIC ceramic particles. The sintered grains of the OIC-phase develop to a dense bulk particle and the liquid EC-phase formed a continuous three-dimensional film running through the grain-boundaries of the connected OIC phase. The concept was verified using Ba 0.5Sr 0.5Fe 0.2Co 0.8O 3-δ (BSCF) and La 0.15Sr 0.5Fe 0.2Co 0.8O 3-δ (LSGF). The majority phase was the chemically more stable LSGF and the second phase was made of a mechanically and chemically compatible BSCF, rather than a metal, the dual phase composite membrane exhibited a higher oxygen permeability and offered better chemical/mechanical stability than the highly oxygen permeable BSCF membrane.
| Original language | English (US) |
|---|---|
| Title of host publication | ACS Division of Fuel Chemistry, Preprints |
| Pages | 238-239 |
| Number of pages | 2 |
| Volume | 48 |
| Edition | 1 |
| State | Published - Mar 2003 |
| Externally published | Yes |
| Event | Proceedings of the 2003 SPE/EPA/DOE Exploration Production Environmental Conference - San Antonio, TX, United States Duration: Mar 10 2003 → Mar 12 2003 |
Other
| Other | Proceedings of the 2003 SPE/EPA/DOE Exploration Production Environmental Conference |
|---|---|
| Country/Territory | United States |
| City | San Antonio, TX |
| Period | 3/10/03 → 3/12/03 |
ASJC Scopus subject areas
- Energy(all)