Pore size effects in high-temperature Fischer–Tropsch synthesis over supported iron catalysts

Cheng, Kang; Virginie, Mirella; Ordomsky, Vitaly V.; Cordier, Catherine; Чернавский, П. А.; Иванцов, М. И.; Paul, Sébastien; Wang, Ye; Khodakov, Andreï Y.

doi:10.1016/j.jcat.2014.12.007

Cited by 166 publications

(112 citation statements)

References 80 publications

(122 reference statements)

Supporting

Mentioning

106

Contrasting

Order By: Relevance

“…While the spectrum of Fe5C2 at roomtemperature does have more components than the two sextets presented in Cheng, [11] their synthesis route is different to that used for this study, and material synthesisroute is believed to have an effect on hyperfine structure and therefore on the Mössbauer data. [13] The trend seen for both iron sites agree with that expected for the Debye model, as seen in Figures 1 and 2.…”

Section: Analysis and Discussionmentioning

confidence: 88%

See 1 more Smart Citation

Variable Temperature 57Fe-Mössbauer Spectroscopy Study of Nanoparticle Iron Carbides

Scrimshire¹,

Lobera²,

Kultyshev³

et al. 2015

Croat. Chem. Acta

View full text Add to dashboard Cite

Near-phase-pure nanoparticle iron carbides (Fe3C and Fe5C2) were synthesised. Debye model calculations were used with hyperfine parameters gathered by 57 Fe Mössbauer spectroscopy within a temperature range of 10 K to 293 K, with analysis providing Debye temperatures of 422 K and 364 K for two Fe sites in Fe5C2 and 355 K for ferromagnetic Fe3C. The intrinsic isomer shifts were calculated as 0.45 mm s −1 and 0.43 mm s −1 for iron sites 1 and 2 respectively in Fe5C2 and 0.42 mm s −1 for Fe3C. Recoil-free fractions for the two iron sites were also calculated at f300 0.785 and 0.726 for site 1 and 2 respectively.

show abstract

Section: Analysis and Discussionmentioning

confidence: 88%

“…Iron carbide phase characteristics [6] Atomic ratio Interstitial occupation Wt% Formula (C : Fe) Table 2. Nanoparticle Fe5C2 Mössbauer parameters [11] Iron Site IS / mm s Table 3. Bulk sample Fe5C2 Mössbauer parameters [6] Iron shift trend, and as such it was omitted from calculations to come.…”

Section: Resultsmentioning

confidence: 99%

Variable Temperature 57Fe-Mössbauer Spectroscopy Study of Nanoparticle Iron Carbides

Scrimshire¹,

Lobera²,

Kultyshev³

et al. 2015

Croat. Chem. Acta

View full text Add to dashboard Cite

show abstract

“…The most relevant are those related to the active phase, i.e. nanoparticles (NPs) size [5][6][7][8] and shape [9][10][11][12], and to the support, mainly pore size [13][14][15][16] and surface chemistry [17][18][19][20], but also the way of catalysts synthesis can affect the activity and/or selectivity [21,22].…”

Section: Introductionmentioning

confidence: 99%

Catalysts based on large size-controlled Pd nanoparticles for aqueous-phase hydrodechlorination

Baeza

Calvo

Rodrı́guez

et al. 2016

Chemical Engineering Journal

View full text Add to dashboard Cite

“…The current technology, named the Gas-to-Liquid process (GTL process), consists of the Fischer-Tropsch Synthesis as the principal process. These products have advantages from various points of view: environmental, economic and logistic (Cheng et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

OXIDATIVE-REFORMING OF METHANE AND PARTIAL OXIDATION OF METHANE REACTIONS OVER NiO/PrO2/ZrO2 CATALYSTS: EFFECT OF NICKEL CONTENT

Asencios

Marcos

Assaf

et al. 2016

Braz. J. Chem. Eng.

View full text Add to dashboard Cite

-In this work the behavior of NiO-PrO2-ZrO2 catalysts containing various nickel loadings was evaluated in the partial oxidation of methane and oxidative-reforming reactions of methane. The catalysts were characterized by X-Ray Diffraction Analysis (in situ-XRD), Temperature Programmed Reduction (H2-TPR), Scanning Electron Microscopy (SEM/EDX) and Adsorption-Desorption of nitrogen (BET area). The reactions were carried out at 750 °C and 1 atm for 5 hours. The catalysts were studied with different nickel content: 0, 5, 10 and 15% (related to total weight of catalyst, wt%). In both reactions, the catalyst containing the mixture of the three oxides (NiO/PrO2/ZrO2) with 15% nickel (15NiPrZr catalyst) showed the best activity for the conversion of the reactants into Syngas and showed high selectivity for H2 and CO. The results suggest that the promoter PrO2 and the Niº centers are in a good proportion in the catalyst with 15% Ni. Our results showed that low nickel concentrations in the catalyst led to high metallic dispersion; however, very low nickel concentrations did not favor the methane transformation into Syngas. The catalyst containing only NiO/ZrO2 in the mixture was not sufficient for the catalysis. The presence of the promoter PrO2 was very important for the catalysis of the POM.

show abstract

Pore size effects in high-temperature Fischer–Tropsch synthesis over supported iron catalysts

Cited by 166 publications

References 80 publications

Variable Temperature 57Fe-Mössbauer Spectroscopy Study of Nanoparticle Iron Carbides

Variable Temperature 57Fe-Mössbauer Spectroscopy Study of Nanoparticle Iron Carbides

Catalysts based on large size-controlled Pd nanoparticles for aqueous-phase hydrodechlorination

OXIDATIVE-REFORMING OF METHANE AND PARTIAL OXIDATION OF METHANE REACTIONS OVER NiO/PrO2/ZrO2 CATALYSTS: EFFECT OF NICKEL CONTENT

Contact Info

Product

Resources

About