| Titre : | Making sense of the fischer − tropsch synthesis reaction : Start - up (2011) |
| Auteurs : | Xiaojun Lu, Auteur ; Diane Hildebrandt, Auteur ; Xinying Liu, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 49 N° 20, Octobre 2010) |
| Article en page(s) : | pp. 9753–9758 |
| Note générale : | Chimie industrielle |
| Langues : | Anglais |
| Tags : | Fischer tropsch reaction |
| Résumé : | Conventional Fischer−Tropsch experiments were conducted to investigate the early stages (start-up) of the reaction of a TiO2-supported cobalt catalyst in a continuous stirred tank reactor and compared to the later stages. Thus, both short-term and long-term experiments were performed starting with fresh catalysts in each case. The experimental results showed that stirrer speed had an influence on the Fischer−Tropsch performance only in the short term. This suggested that under typical reaction conditions in a gas−solid system, long-term the Fischer−Tropsch reaction is not controlled by external mass transfer. After between about 30 and 80 h (depending on the temperature), large changes in reaction rate and product selectivity were observed, and these time-on-stream experiments showed that these changes were caused neither by the reaction conditions nor by the external mass transfer. Two possible explanations are proposed. |
| DEWEY : | 660 |
| ISSN : | 0888-5885 |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie1011933 |
