| Titre : | Application of a combined catalyst and sorbent for steam reforming of methane (2010) |
| Auteurs : | Karl O. Albrecht, Auteur ; Justinus A. Satrio, Auteur ; Brent H. Shanks, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 49 N° 9, Mai 2010) |
| Article en page(s) : | pp. 4091–4098 |
| Note générale : | Industrial chemistry |
| Langues : | Anglais |
| Tags : | Catalyst Methane |
| Résumé : | The performance of a combined catalyst and sorbent material designed for reforming hydrocarbons was evaluated by reacting methane with steam at different temperatures and pressures in a reactor packed with the material. The combined material was in the form of small spherical pellets comprised of a sorbent core of lime encased in a porous shell made largely of sintered alumina that supported a nickel catalyst. On the basis of previous research, two shell formulations were included in the study. One shell formulation contained a small quantity of CaO for strengthening of the shells, whereas the other contained a similar quantity of La2O3. Reaction testing of the combined catalyst and sorbent over a temperature range of 550−650 °C and a pressure range of 1.0−10.0 atm showed that pellets with either shell formulation were capable of producing H2 at or near thermodynamic equilibrium levels during a period when CO2 was being rapidly absorbed by the core material. Limited lifecycle testing of the combined catalyst and sorbent was also conducted at 650 °C and 1.0 atm over 10 cycles of H2 production and sorbent regeneration. A product stream with 98 mol % H2 (dry basis) was produced during the rapid CO2 absorption period of each cycle. However, the length of this period declined with each cycle. |
| ISSN : | 0888-5885 |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie901914c |
