Hydrodesulfurization activity of NiMo/Al-HMS nanocatalyst synthesized by supercritical impregnation / Mehrdad Alibouri in Industrial & engineering chemistry research, Vol. 48 N° 9 (Mai 2009)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 48 N° 9 (Mai 2009) . - pp. 4283–4292 Titre : Hydrodesulfurization activity of NiMo/Al-HMS nanocatalyst synthesized by supercritical impregnation Type de document : texte imprimé Auteurs : Mehrdad Alibouri, Auteur ; Seyyed M. Ghoreishi, Auteur ; Hamid R. Aghabozorg, Auteur Année de publication : 2009 Article en page(s) : pp. 4283–4292 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : 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 [article] Hydrodesulfurization activity of NiMo/Al-HMS nanocatalyst synthesized by supercritical impregnation [texte imprimé] / Mehrdad Alibouri, Auteur ; Seyyed M. Ghoreishi, Auteur ; Hamid R. Aghabozorg, Auteur . - 2009 . - pp. 4283–4292. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 9 (Mai 2009) . - pp. 4283–4292 Mots-clés : 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

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