| Titre : | Role of support in hydrotreatment of jatropha oil over sulfided NiMo catalysts (2013) |
| Auteurs : | Shaofeng Gong, Auteur ; Akira Shinozaki, Auteur ; Eika W. Qian, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 51 N° 43, Octobre 2012) |
| Article en page(s) : | pp. 13953–13960 |
| Note générale : | Industrial chemistry |
| Langues : | Anglais |
| Tags : | Hydrotreatment Catalysts |
| Résumé : | Hydrotreatment of jatropha oil over a series of sulfided NiMo/SiO2–Al2O3 and NiMo/ZSM-5–Al2O3 catalysts in a fixed-bed reactor was carried out. Effect of support on various reactions occurring in hydrotreatment was investigated. For NiMo/SiO2–Al2O3 series catalysts, the rates of decarboxylation and/or decarbonylation increased with increasing Si/(Si+Al) ratio, while the ratio of hydrodeoxygenation decreased with increasing Si/(Si+Al) ratio. For NiMo/ZSM-5–Al2O3 series catalysts, with increasing amounts of ZSM-5, the rate of decarboxylation and/or decarbonylation versus hydrodeoxygenation did not change. These results could be attributed to the total acidic sites of catalyst having a positive effect on the decarboxylation and/or decarbonylation pathways. NiMo/SiO2–Al2O3 catalysts showed a much higher isomerization/cracking ratio than NiMo/ZSM-5–Al2O3 catalysts. It was suggested that isomerization reaction was favorable for weak and middle acidic sites but cracking reaction was favorable for strong acidic sites. |
| ISSN : | 0888-5885 |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie301204u |
