Characterization by temperature programmed techniques of spent and acid treated vanadium catalysts
David Charry, I; Maria Gonzalez, L; Montes de Correa, C
| HERO ID | 1731471 |
|---|---|
| In Press | No |
| Year | 2011 |
| Title | Characterization by temperature programmed techniques of spent and acid treated vanadium catalysts |
| Authors | David Charry, I; Maria Gonzalez, L; Montes de Correa, C |
| Journal | Revista Facultad de IngenierÃa Universidad de Antioquia |
| Issue | 57 |
| Page Numbers | 31-37 |
| Abstract | Spent samples of V(2)O(5)/SiO(2)-gamma Al(2)O(3) catalyst used for H(2)SO(4) production were acid treated to recover vanadium. Fresh, spent, and acid treated samples were characterized by temperature-programmed techniques: TPR-H(2), TPO-O(2), TPD-NH(3) and, TGA-DTA in order to determine the effect of deactivating species on vanadium recovery. DRX and UV-Vis techniques were used to confirm several signals from the temperature-programmed profiles. The results suggest that vanadium sulfovanadates and oxides in treated samples strongly interact with the support making it difficult to get more than 86% vanadium recovery. |
| Wosid | WOS:000286413100005 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Source: Web of Science WOS:000286413100005 |
| Is Public | Yes |
| Keyword | V(2)O(5) catalyst; catalyst deactivation; vanadium recovery; sulfovanadate species; temperature-programmed techniques |