De Novo Design of Nanostructured Iron–Cobalt Fischer–Tropsch Catalysts

Calderone, V. Roberto; Shiju, N. Raveendran; Curulla‐Ferré, Daniel; Chambrey, Stéphane; Khodakov, Andreï Y.; Rose, Amadeus; Thiessen, Johannes; Jess, Andreas; Rothenberg, Gadi

doi:10.1002/anie.201209799

Cited by 108 publications

(66 citation statements)

References 21 publications

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“…The autoclave was then cooled down to RT. H 2 , N 2 , CO, CH 4 , and CO 2 in the gas phase were analysed by a GC9560 gas chromatograph with a 2-m-long TDX-01 packed column connected to a thermal conductivity detector (TCD) using N 2 as the internal standard. The hydrocarbons in the gas phase (C 1 -C 4 ) were analysed by a GC9160 gas chromatograph with a PONA capillary column (50 m Â 0.25 mm Â 0.50 mm) connected to a flame ionization detector (FID).…”

Section: Methodsmentioning

confidence: 99%

“…According to Fig. 4a, at 473 K, the low-value CH 4 and C 2 -C 4 hydrocarbons are the primary products. At 443 K, the C 2 -C 4 and C 5 -C 11 (gasoline fraction) hydrocarbons become dominant.…”

Section: Article Nature Communications | Doimentioning

confidence: 99%

“…Fischer-Tropsch synthesis (FTS) is a key technology in heterogeneous catalysis for the production of chemicals including liquid fuel from carbon sources alternative to unsustainable crude oil [1][2][3][4] . The wide availability and resistance to poisons, high adaptability to broad H 2 /CO ratios and versatility to various useful products make iron-based catalysts ideal for converting H 2 -deficient syngas (CO and H 2 ) from coal and renewable biomass.…”

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confidence: 99%

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ε-Iron carbide as a low-temperature Fischer–Tropsch synthesis catalyst

et al. 2014

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e-Iron carbide has been predicted to be promising for low-temperature Fischer-Tropsch synthesis (LTFTS) targeting liquid fuel production. However, directional carbidation of metallic iron to e-iron carbide is challenging due to kinetic hindrance. Here we show how rapidly quenched skeletal iron featuring nanocrystalline dimensions, low coordination number and an expanded lattice may solve this problem. We find that the carbidation of rapidly quenched skeletal iron occurs readily in situ during LTFTS at 423-473 K, giving an e-iron carbidedominant catalyst that exhibits superior activity to literature iron and cobalt catalysts, and comparable to more expensive noble ruthenium catalyst, coupled with high selectivity to liquid fuels and robustness without the aid of electronic or structural promoters. This finding may permit the development of an advanced energy-efficient and clean fuel-oriented FTS process on the basis of a cost-effective iron catalyst.

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Section: Methodsmentioning

confidence: 99%

Section: Article Nature Communications | Doimentioning

confidence: 99%

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ε-Iron carbide as a low-temperature Fischer–Tropsch synthesis catalyst

et al. 2014

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“…This oxide mixture is assumed to be well mixed (a solid solution) and differentf rom the Co-Fe core-shell structure reported recently. [7,43] Unlike typical metal oxide supports, TPR profileso ft he catalysts supported on CSs display ab road negative peak at temperatures above 600 8Cc aused by the gasification of the carbon material (C+ +2H 2 !CH 4 ). Generally,Fe-rich samples catalysed the methanation reactionb etter than their Co-rich analogues, as displayed by the lower gasification temperatures for Fe samples.…”

Section: Catalyst Characterisationmentioning

confidence: 99%

“…This data suggests as urfacer ich in Co; possibly with as tructure similar to the core-shell Fe@Co catalyst reported recently. [7,43,58] …”

Section: Influence Of the Alloy On The Co Conversion And Selectivitymentioning

confidence: 99%

Carbon Spheres Prepared by Hydrothermal Synthesis—A Support for Bimetallic Iron Cobalt Fischer–Tropsch Catalysts

et al. 2015

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Carbon spheres (CSs) synthesised by the hydrothermal approach were explored as a model support material for a bimetallic Fe–Co Fischer–Tropsch (FT) catalyst. The CSs were characterised by N2 adsorption–desorption, thermogravimetric analysis, FTIR spectroscopy and powder XRD. If annealed at 900 °C for 4 h, the CSs exhibited an improved surface area, thermal stability and crystallinity. A series of Fe–Co bimetallic FT catalysts supported on the annealed CSs were prepared by co‐precipitation. A variety of Fe‐to‐Co ratios were used with the total metal loadings maintained at 10 %. Catalyst reducibility studies were performed by H2 temperature‐programmed reduction and in situ powder XRD. Catalysts with a Fe/Co ratio of 5:5 (w/w) showed Co–Fe alloy formation upon reduction at >450 °C. Interestingly, the presence of this alloy did not correlate with high C5+ selectivities during FT synthesis; rather the Co‐rich/Fe‐poor catalyst gave the best selectivity. The CSs allowed the metal–metal interactions in the bimetallic systems to be monitored because of the weak interaction of the metals with the support.

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Titania‐Supported Ni₂P/Ni Catalysts for Selective Solar‐Driven CO Hydrogenation

Zhang

Liu

et al. 2021

Advanced Materials

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Solar‐driven Fischer–Tropsch synthesis (FTS) holds great potential for the sustainable production of fuels from syngas and solar energy. However, the selectivity toward multi‐carbon products (C2+) is often hampered by the difficulty in the regulation of transition metals acting as both light absorption units and active sites. Herein, a partial phosphidation strategy to prepare titania supported Ni2P/Ni catalysts for photothermal FTS is demonstrated. Under Xenon lamp or concentrated sunlight irradiation, the optimized catalyst shows a C2+ selectivity of 70% at a CO conversion of >20%. Conversely, nickel metal in the absence of Ni2P delivers negligible C2+ products (≈1%) with methane being the major product (>90%). Structural characterization and density functional theory calculation reveal that the partial phosphidation allows exposed metallic Ni to be active for CO adsorption and activation, while the existence of Ni2P/Ni interface is responsible to inhibit CO methanation and promote C–C coupling of adsorbed *CH intermediates. This work introduces a novel phosphidation strategy for nickel‐based photothermal catalysts in efficiently harnessing solar energy, and regulating the reaction pathways for CO hydrogenation to deliver high value products.

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De Novo Design of Nanostructured Iron–Cobalt Fischer–Tropsch Catalysts

Cited by 108 publications

References 21 publications

ε-Iron carbide as a low-temperature Fischer–Tropsch synthesis catalyst

ε-Iron carbide as a low-temperature Fischer–Tropsch synthesis catalyst

Carbon Spheres Prepared by Hydrothermal Synthesis—A Support for Bimetallic Iron Cobalt Fischer–Tropsch Catalysts

Titania‐Supported Ni₂P/Ni Catalysts for Selective Solar‐Driven CO Hydrogenation

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De Novo Design of Nanostructured Iron–Cobalt Fischer–Tropsch Catalysts

Cited by 108 publications

References 21 publications

ε-Iron carbide as a low-temperature Fischer–Tropsch synthesis catalyst

ε-Iron carbide as a low-temperature Fischer–Tropsch synthesis catalyst

Carbon Spheres Prepared by Hydrothermal Synthesis—A Support for Bimetallic Iron Cobalt Fischer–Tropsch Catalysts

Titania‐Supported Ni2P/Ni Catalysts for Selective Solar‐Driven CO Hydrogenation

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Product

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About

Titania‐Supported Ni₂P/Ni Catalysts for Selective Solar‐Driven CO Hydrogenation