Effect of Pt and Gd on coke formation and regeneration during JP-8 cracking over ZSM-5 catalysts
Kim, S; Sasmaz, E; Lauterbach, J
| HERO ID | 2899544 |
|---|---|
| In Press | No |
| Year | 2015 |
| Title | Effect of Pt and Gd on coke formation and regeneration during JP-8 cracking over ZSM-5 catalysts |
| Authors | Kim, S; Sasmaz, E; Lauterbach, J |
| Journal | Applied Catalysis B: Environmental |
| Volume | 168 |
| Page Numbers | 212-219 |
| Abstract | Pt and Gd loaded ZSM-5 catalysts were synthesized by ion exchange method to investigate the effect of metal promoters on catalyst activity, coking and regeneration during military aviation fuel (JP-8) cracking into petroleum gas (PG) at 723 K. Multiple cracking and regeneration cycles were performed over the ZSM-5 based catalysts and their crystalline structure, oxidation profile, coke band and acidity were characterized. It was revealed that addition of Gd metal to the ZSM-5 catalyst prevented formation of complex aromatic coke and increased the number of Lewis acid sites, while Pt promoted ZSM-5 catalyst showed a decrease in the coke oxidation temperature. The effect of Pt and Gd promoters enhanced the coke burn-off ability, formed hydrogen rich carbon species and reduced oxidation temperature of coke substantially. Furthermore, agglomeration of Pt particles was partially impeded by coexisting Gd metal on the regenerated ZSM-5 catalyst. Synergetic effects of Pt and Gd promoters stabilized the PG yield and product distribution over the Pt-Gd/ZSM-5 catalyst during the cracking and regeneration cycles. (C) 2014 Elsevier B.V. All rights reserved. |
| Doi | 10.1016/j.apcatb.2014.12.027 |
| Wosid | WOS:000352747200024 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | ZSM-5; Coke; Regeneration; Pt; Gd; JP-8; Cracking; LPG |