Fischer–Tropsch Synthesis: Catalysts and Chemistry

Loosdrecht, J. van de; Botes, F. Gideon; Ciobîcă, Ionel M.; Ferreira, Alta C.; Gibson, Phillip; Moodley, D.J.; Saib, A.M.; Visagie, J. L.; Weststrate, C.J.; Niemantsverdriet, J.W.

doi:10.1016/b978-0-08-097774-4.00729-4

Cited by 139 publications

(223 citation statements)

References 151 publications

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“…The conclusion that hydrogenation of the CO dissociation products, in particular to form water from O ad is limiting the overall FTS rate is compatible with the empirical observation that the reaction rate of FTS typically has a positive order in p H2 [25,50], i.e. the reaction rate increases when the conditions become more 'hydrogenating'.…”

Section: G Modelsupporting

confidence: 73%

“…The most notable deviations are a higher than predicted methane selectivity, a lower than predicted C2 selectivity and slightly (or significantly for Fe catalysts operated in the LT-FT regime) lower alpha for the lighter products [3,25].…”

Section: Fts Activity and Selectivity In Relation To Elementary Surfamentioning

confidence: 89%

“…The Anderson-Schulz-Flory distribution describes the FTS product selectivity on the basis of a chain-length independent chain growth probability (␣). 1 For a given value of ␣ the value of C n , the fraction of product molecules with chain length n, can be calculated via [25]:…”

Section: Fts Activity and Selectivity In Relation To Elementary Surfamentioning

confidence: 99%

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Reflections on the Fischer-Tropsch synthesis: Mechanistic issues from a surface science perspective

2016

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Section: G Modelsupporting

confidence: 73%

Section: Fts Activity and Selectivity In Relation To Elementary Surfamentioning

confidence: 89%

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Reflections on the Fischer-Tropsch synthesis: Mechanistic issues from a surface science perspective

2016

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“…In some cases the support is also a chemical promoter, which increases the activity due to strong metal support interactions [4,5]. Despite the stabilizing effect of the support, metal particle growth is still one of the main causes for deactivation of cobalt and iron catalysts in the Fischer-Tropsch reaction [6,7], platinum and palladium in three-way catalysts [8,9], nickel catalysts in the methanation reaction [10], and copper catalysts in the water-gas shift and methanol synthesis reactions [11].…”

Section: Introductionmentioning

confidence: 98%

Impact of the synthesis route of supported copper catalysts on the performance in the methanol synthesis reaction

et al. 2016

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“…gasoline or diesel) and valuable chemicals (e.g. methanol, ethanol and olefins) [1][2][3]. A critical issue in the FTS technologies is the design of new catalytic system with high activity and selectivity to produce hydrocarbons in C 5 -C 12 (gasoline) or C 12 -C 20 (diesel) range.…”

Section: Introductionmentioning

confidence: 99%

Effect of Mg/Al Ratio on Catalytic Behavior of Fischer–Tropsch Cobalt-Based Catalysts Obtained from Hydrotalcites Precursors

et al. 2015

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Layered double hydroxides of the hydrotalcite (HT)-type materials have been considered as promising supports for Co-based Fischer-Tropsch synthesis (FTS) catalysts. In this work the effect of the Mg/Al ratio on the catalytic behavior of cobalt-based catalysts obtained from HTs precursors have been studied. Cobalt supported on Mg-Al oxides obtained from HTs Mg-Al precursors were prepared by wet impregnation method and calcined at 300°C. The textural, structural and reducibility properties of the samples were characterized using different techniques. FTS was evaluated in a down-flow fixed-bed reactor at 20 bar, 250°C and H 2 /CO & 2 molar ratio. All catalysts were active and stable during 72 h testing time. The stability was improved by the presence of magnesium in the alumina support; however the CO conversion was negatively affected by increasing the Mg/Al ratio. The reducibility of cobalt decreased as the Mg/Al ratio increased, probably due to the strong Co-O-Mg interaction as evidenced by the formation of Co x O y -MgO mixed oxide. Furthermore, the activity of the catalysts was correlated with the H 2 -chemisorption measurements. The results suggest that HTs as Co-based catalysts were highly stable in FTS.

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Fischer–Tropsch Synthesis: Catalysts and Chemistry

Cited by 139 publications

References 151 publications

Reflections on the Fischer-Tropsch synthesis: Mechanistic issues from a surface science perspective

Reflections on the Fischer-Tropsch synthesis: Mechanistic issues from a surface science perspective

Impact of the synthesis route of supported copper catalysts on the performance in the methanol synthesis reaction

Effect of Mg/Al Ratio on Catalytic Behavior of Fischer–Tropsch Cobalt-Based Catalysts Obtained from Hydrotalcites Precursors

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