COMPARING THE EFFECTS OF RUTHENIUM, RHENIUM AND POTASSIUM OXIDE ON CHARACTERIZATION AND CATALYTIC PROPERTIES OF COBALT CATALYST IN FISCHER-TROPSCH SYNTHESIS

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AZIZI MARYAM; GHALBI ANANGARI M.; KARIMI ALI; TAVASOLI AHMAD

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Journal: JOURNAL OF SCHOOL OF ENGINEERING Year:2006 | Volume:18 | Issue:2 (CHEMICAL ENGINEERING ISSUE) Page(s): 31-44

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Title

COMPARING THE EFFECTS OF RUTHENIUM, RHENIUM AND POTASSIUM OXIDE ON CHARACTERIZATION AND CATALYTIC PROPERTIES OF COBALT CATALYST IN FISCHER-TROPSCH SYNTHESIS

Author(s)

AZIZI MARYAM | GHALBI ANANGARI M. | KARIMI ALI | TAVASOLI AHMAD | Issue Writer Certificate

Keywords

FISCHER-TROPSCHQ3

COBALTQ3

RUTHENIUMQ3

RHENIUMQ3

POTASSIUMQ3

REDUCIBILITYQ3

ACTIVITYQ3

C5+ SELECTIVITYQ2

Abstract

The best catalysts in the FISCHER-TROPSCH synthesis (FTS) are COBALT-based catalyst due to their higher ACTIVITY, selectivity, and lifetime. An extensive study of FTS on alumina-supported COBALT catalysts promoted with different amounts of RUTHENIUM, RHENIUM and POTASSIUM is reported. Up to 2 wt% of RUTHENIUM and RHENIUM and 0.1 atomic ratio of POTASSIUM, are added to the catalyst by coimpregnation. The catalysts are characterized by different methods including: BET physisorption, X-ray diffraction, hydrogen chemisorption, and temperature-programmed reduction and adsorption. The effect of promoters on COBALT oxide reduction, particle size distribution, dispersion of the COBALT, ACTIVITY and selectivity of FTS is investigated. 1wt% Ru and 1.4wt% Re increased the ACTIVITY of the catalyst by a factor of 2.8 and 2.5 respectively. Both promoters enhance the selectivity of FISCHER-TROPSCH synthesis towards the higher molecular weight hydrocarbons. However, the effect of Re is less pronounced. K increased the C5+ selectivity Co/Al2O3 catalyst by a factor of 1.7.

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APA: Copy

AZIZI, MARYAM, GHALBI ANANGARI, M., KARIMI, ALI, & TAVASOLI, AHMAD. (2006). COMPARING THE EFFECTS OF RUTHENIUM, RHENIUM AND POTASSIUM OXIDE ON CHARACTERIZATION AND CATALYTIC PROPERTIES OF COBALT CATALYST IN FISCHER-TROPSCH SYNTHESIS. JOURNAL OF SCHOOL OF ENGINEERING, 18(2 (CHEMICAL ENGINEERING ISSUE)), 31-44. SID. https://sid.ir/paper/22543/en

Vancouver: Copy

AZIZI MARYAM, GHALBI ANANGARI M., KARIMI ALI, TAVASOLI AHMAD. COMPARING THE EFFECTS OF RUTHENIUM, RHENIUM AND POTASSIUM OXIDE ON CHARACTERIZATION AND CATALYTIC PROPERTIES OF COBALT CATALYST IN FISCHER-TROPSCH SYNTHESIS. JOURNAL OF SCHOOL OF ENGINEERING[Internet]. 2006;18(2 (CHEMICAL ENGINEERING ISSUE)):31-44. Available from: https://sid.ir/paper/22543/en

IEEE: Copy

MARYAM AZIZI, M. GHALBI ANANGARI, ALI KARIMI, and AHMAD TAVASOLI, “COMPARING THE EFFECTS OF RUTHENIUM, RHENIUM AND POTASSIUM OXIDE ON CHARACTERIZATION AND CATALYTIC PROPERTIES OF COBALT CATALYST IN FISCHER-TROPSCH SYNTHESIS,” JOURNAL OF SCHOOL OF ENGINEERING, vol. 18, no. 2 (CHEMICAL ENGINEERING ISSUE), pp. 31–44, 2006, [Online]. Available: https://sid.ir/paper/22543/en

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