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Showing 1 to 11 of 11 for “"Iron-based catalysts"”.
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Influence of basicity in Fischer-Tropsch synthesis over supported iron-based catalysts
The Fischer-Tropsch synthesis catalyzed by iron is a well-established process for the production of synthetic fuels, waxes and high-value chemicals, such as α-olefins. A draw-back of the currently used iron-based catalysts is their short lifetime, caused by sintering and particle break-up. These …
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Sustainable catalysis using iron based catalysts for hydrofunctionalization of c=x (x = o, n) unsaturated bonds
… the price of the products synthesized with these catalysts. Therefore, the replacement of these catalysts with earth abundant cheap alternatives like iron is highly demanded. Iron has been known for a long time as a catalyst for physiological (hemoglobin) and large scale industrial process such as …
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Nanosized iron crystallites for Fischer-Tropsch synthesis
… metals for industrial application are cobalt and iron. In this work iron-based catalysts were studied. To ensure maximum metal utilisation and therefore a high weight specific catalytic activity, the metal crystallites should possess large specific surface areas and that is only achievable with …
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The role of additives in Fischer-Tropsch reactions
… feedstocks including coal and biomass. Typically iron and cobalt based catalysts have been used for the FTS reaction, in which a mixture of CO and H2 (syn-gas) reacts to form hydrocarbons. Enhanced performance has been reported for iron-based systems doped with alkali metals and chalcogenides. …
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Selective production of nitrogen-containing compounds via a modified Fischer-Tropsch process
… into the Fischer-Tropsch (FTS) process over ironbased catalysts revealed that the presence of ammonia during the FTS leads to the formation of nitrogen-containing compounds (NCCs). Recent studies on the addition of ammonia to the FTS process, now known as the Nitrogen Fischer-Tropsch (NFTS) …
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Novel empowered supports for iron-based Fischer-Tropsch in a power-to-liquids process
… at moderate temperatures and pressures. Iron-based catalysts are frequently used in commercial FT as they are quite useful in hydrogen lean synthesis gas because of their high water-gas shift activity. Nevertheless, these catalysts often need to be promoted to optimize their performance …
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Adding ammonia during Fischer-Tropsch Synthesis: Pathways to the formation of N-containing compounds
… form when NH₃ is added during FTS, using mostly iron based catalysts is investigated. In addition, the effect this has on the FTS reaction itself is evaluated. To achieve this goal, both theoretical and experimental techniques are used in this study. The CO adsorption and dissociation reactions …
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Investigation of the promotional effect of Cu and Ag on iron-based Fischer-Tropsch catalysts using ferrites as model catalysts
… metals for industrial application are cobalt and iron. The commercially used iron-based Fischer-Tropsch catalyst is supported on silica (Si), to improve the dispersion of the active metal and is promoted with small amounts of potassium to enhance the activity and selectivity of the catalyst and …
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A study on the effect of lateral interactions on methanation over Fe(100)
… on the surface of Fe(100) may indicate that iron-based catalysts need to undergo phase changes to complete the catalytic cycle.
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Metal oxide supported iron-nickel nano-alloys in the reverse water-gas shift reaction
… and there is a need for low temperature catalysts with a high CO selectivity. Noble metal catalysts have been well studied for the RWGS, though affordable and abundant metals are required for large-scale applications. Iron-based catalysts have been widely explored due to their high …
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CO AND CO2 HYDROGENATION BY FISCHER TROPSCH SYNTHESIS PROMOTED WITH IRON BASED HETEROGENEOUS CATALYSIS: DATA COLLECTION AND PROCESS DESIGN
… relies on syngas (CO/H2) over transition-metal catalysts, but the direct hydrogenation of CO2 has been less explored, particularly with Fe-based heterogeneous catalysts. Iron is an abundant and inexpensive metal, already known for its high activity in conventional FT from CO. This research aims …