Hydrogenation of aromatics on modified platinum-alumina catalysts
Abdel-Ghaffar A. Ali; Laila I. Ali; S.M. Aboul-Fotouh; Ahmed K. Aboul-Gheit;
Abstract
Using a pulsed-micro catalytic reactor benzene and toluene were hydrogenated to cyclohexane and methylcyclohexane, respectively, in a temperature range 50–250°C. Modified catalysts containing 0.35% Pt–Al2O3 were investigated. Modification was carried out via (a) introducing a second metal (Ir, Rh, Re and U) and (b) fluorination and chlorination with different halogen contents of 1,3 and 6 wt%. The study revealed that (1) all catalysts show good catalytic activities in the temperature range 125–150°C, except Rh catalyst which is very active even at room temperature, (2) introducing either Ir or Re enhances Pt activity, while U inhibits this activity, (3) halogenation promotes the catalyst activity and (4) alkyl-substitution enhanced aromatic ring hydrogenation.
Other data
Title | Hydrogenation of aromatics on modified platinum-alumina catalysts | Authors | Abdel-Ghaffar A. Ali; Laila I. Ali ; S.M. Aboul-Fotouh; Ahmed K. Aboul-Gheit | Keywords | Benzene Toluene Hydrogenation Pt–Al2O3 catalyst | Issue Date | 1998 | Publisher | Elsevier Science B.V. | Journal | Applied Catalysis A: General | Volume | 170 | Start page | 285 | End page | 296 |
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