On Efficiency of Vanadium-Oxide Promoter in Cobalt Fischer-Tropsch Catalysts

• Published in: Catalysis in industry Vol. 13; no. 2; pp. 161 - 167
• Main Authors: Elham Yaghoobpour, Zamani, Yahya, Zarrinpashne, Saeed, Zamaniyan, Akbar
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.04.2021; Springer Nature B.V
• Subjects: Carbon monoxide; Catalysis; Catalysis in Chemical and Petrochemical Industry; Catalysts; Chemistry; Chemistry and Materials Science; Fischer-Tropsch process; Performance evaluation; Selectivity; Titanium dioxide; Vanadium oxides; Vanadium pentoxide; vanadium promoter; Fischer-Tropsch synthesis; titanium oxide; cobalt catalyst
• ISSN: 2070-0504; 2070-0555
• DOI: 10.1134/S2070050421020124

Promoters and their loading amount have crucial roles in cobalt Fischer-Tropsch catalysts. In this regard, the effects of vanadium oxide (V 2 O 5 ) as a proposed promoter for Co catalyst supported on TiO 2 have been investigated. Three catalysts with 0, 1, and 3 wt % of V 2 O 5 promoter loading are prepared by the incipient wetness impregnation method, and characterized by the BET surface area analyzer, XRD, H 2 -TPR, and TEM techniques. The fixed-bed reactor was employed for their evaluations. It was found that the catalyst containing 1 wt % V 2 O 5 has the best performance among the evaluated catalysts, demonstrating remarkable selectivity: 92% C 5+ and 5.7% CH 4 , together with preserving the amount of CO conversion compared to the unpromoted catalyst. Furthermore, it is reported that the excess addition of V 2 O 5 promoter (>1 wt %) in the introduced catalyst leads to the detrimental effect on the CO conversion and C 5+ selectivity, mainly owing to diminished active sites by V 2 O 5 loading.