Fischer–Tropsch synthesis: effect of silica on hydrocarbon production over cobalt-based catalysts
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Support materials have an important role in Fischer–Tropsch synthesis (FTS) catalyst and are influenced by various factors. In this paper, the effects of silica augmentation to γ-Al2O3 supported cobalt material on morphology and performance of catalyst have been studied. A series of catalysts, contain 0, 5, 10, and 15 wt % SiO2, were prepared using the incipient wetness impregnation method. The prepared catalysts were characterized by various techniques such as BET, H2-TPR, XRD, and HRTEM. Then, the catalysts were tested in a fixed-bed reactor. The results showed that the addition of SiO2 material remarkably promoted the catalyst performance in terms of CO conversion, catalyst activity, and consequently catalytic yield. Among the synthesized catalysts, the catalyst with 10 wt% silica demonstrated an optimum silica addition to achieve the highest catalyst performance.
KeywordsFischer–Tropsch synthesis Cobalt catalyst γ-Alumina support Silica effect
The authors are gratefully acknowledged Research Institute of Petroleum Industry (RIPI) for financial support, which enabled this work to be undertaken.
- Borg Ø, Hammer N, Eri S, Lindvåg OA, Myrstad R, Blekkan EA, Rønning M, Rytter E, Holmen A (2009) Fischer–Tropsch synthesis over un-promoted and Re-promoted γ-Al2O3 supported cobalt catalysts with different pore sizes. Catal Today 142:70–77. https://doi.org/10.1016/j.cattod.2009.01.012 CrossRefGoogle Scholar
- Ma W, Jacobs G, Keogh R, Yen ChH, Klettlinger JLS, Davis BH (2011) Fischer–Tropsch synthesis: effect of Pt promoter on activity, selectivities to hydrocarbons and oxygenates, and kinetic parameters over 15%Co/Al2O3. Synthetic Liq Prod Refin ACS. https://doi.org/10.1021/bk-2011-1084.ch006 Google Scholar
- Ma W, Jacobs G, Gao P, Jermwongratanachai T, Shafer Wilson D, Pendyalam VRR, Yen Chia H, Klettlinger JLS, Davis BH (2014) Fischer–Tropsch synthesis: pore size and Zr promotional effects on the activity and selectivity of 25%Co/Al2O3 catalysts. Appl Catal A 475:314–324. https://doi.org/10.1016/j.apcata.2014.01.016 CrossRefGoogle Scholar
- Savost’yanov AP, Yakovenko RE, Sulima SI, Bakun VG, Narochnyi GB, Chernyshev VM, Mitchenko SA (2016) The impact of Al2O3 promoter on an efficiency of C5 + hydrocarbons formation over Co/SiO2 catalysts via Fischer–Tropsch synthesis. Catal Today 279:107–114. https://doi.org/10.1016/j.cattod.2016.02.037 CrossRefGoogle Scholar