Effects of Sintering on the Properties of La0.6Sr0.4Co0.2Fe0.8O3-delta Perovskite Hollow Fiber Membranes
Tan, X; Wang, Z; Li, K
| HERO ID | 2013813 |
|---|---|
| In Press | No |
| Year | 2010 |
| Title | Effects of Sintering on the Properties of La0.6Sr0.4Co0.2Fe0.8O3-delta Perovskite Hollow Fiber Membranes |
| Authors | Tan, X; Wang, Z; Li, K |
| Journal | Industrial and Engineering Chemistry Research |
| Volume | 49 |
| Issue | 6 |
| Page Numbers | 2895-2901 |
| Abstract | La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF) hollow fiber membrane precursors were prepared by spinning a starting Suspension containing 68.75 wt % LSCF powders, 6.25 wt % polyethersulfone (PESf), and 25.0 wt % N-methyl-2-pyrrolidinone (NMP) at room temperature using deionized water and tape water as the internal and external coagulants, respectively. High temperature sintering was carried Out in a range of 1200-1500 degrees C to study the influences of the sintering process oil the properties of the LSCF hollow fiber membranes including the microstructure, crystalline phase, mechanical strength, as well as the oxygen permeability. Mechanical strength of the LSCF hollow fibers increased with increasing sintering temperature and reached a maximum of 115 MPa at 1500 degrees C sintering temperature. To obtain gastight LSCF hollow fiber membranes, the sintering temperature must be higher than 1250 degrees C, and the sintering time must be longer than 2 h. However, higher than 1350 degrees C sintering temperature would facilitate the formation of sulfate impurity phases, resulting in noticeable reduction of oxygen permeation flux. The optimum sintering temperature should be around 1300 degrees C, and the sintering time should be within the range of 2-4 h to obtain the gaslight and high flux LSCF hollow fiber membranes. |
| Doi | 10.1021/ie901403u |
| Wosid | WOS:000275379400045 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |