| Titre : | Hydrodesulfurization activity of NiMo/Al-HMS nanocatalyst synthesized by supercritical impregnation (2009) |
| Auteurs : | Mehrdad Alibouri, Auteur ; Seyyed M. Ghoreishi, Auteur ; Hamid R. Aghabozorg, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 48 N° 9, Mai 2009) |
| Article en page(s) : | pp. 4283–4292 |
| Note générale : | Chemical engineering |
| Langues : | Anglais |
| Tags : | NiMo/Al-HMS nanocatalyst CO2-methanol deposition Wet coimpregnation Hydrodesulfurization |
| Résumé : | The synthesis of NiMo/Al-HMS nanocatalyst (2.3 wt % Ni and 9.4 wt % Mo) via supercritical CO2−methanol deposition and conventional wet coimpregnation was investigated. The characterization of both catalysts by adsorption−desorption of nitrogen, oxygen chemisorptions, XRD, TPR, and TEM indicated that Ni and Mo highly and uniformly dispersed on the Al-HMS support. The results of activity of the NiMo/Al-HMS nanocatalyst in the hydrodesulfurization of dibenzothiophene demonstrated higher conversion for the NiMo/Al-HMS nanocatalyst in contrast to conventional catalyst. The reaction rate constants at 330 °C for the NiMo/Al-HMS nanocatalyst and the conventional one were calculated to be 3.65 × 10−5 and 2.20 × 10−5 (mol /g cat. min), respectively. Moreover, the newly developed nanocatalyst is less inhibited than the conventional catalyst by aromatics such as toluene. |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie801442c |
