Bifunctional Cobalt Catalyst for the Synthesis of Waxy Diesel Fuel by the Fischer–Tropsch Method: From Development to Commercialization. Part 1: Selection of the Industrial Sample of the Zeolite Component HZSM-5

Yakovenko, R. E.; Зубков, И. Н.; Бакун, В. Г.; Аглиуллин, М. Р.; Салиев, А. Н.; Savost’yanov, A. P.

doi:10.1134/s2070050421030120

Cited by 7 publications

(5 citation statements)

References 33 publications

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“…15, in accordance with previous results reported in literature. 146,149 3𝐹𝑒 2 𝑂 3 + 𝐻 2 → 2𝐹𝑒 3 𝑂 4 + 𝐻 2 𝑂 (15) This reduction step is well known for hematite NPs and was already expected since XRD spectra showed the presence of Fe2O3 instead of Fe3O4. The slight difference observed in the temperature for this step may be attributed to the heterogenous dispersion of metallic NPs on the support and their interaction with the HZSM-5 surface.…”

Section: Temperature Programmed Reduction (Tpr)supporting

confidence: 56%

“…Among these processes, the study of FTS for fuel production from syngas has been widely investigated in the literature from the perspectives of modeling and simulation 13 , experimental design 14 , catalyst development 15 , and economic assessment. 16 The syngas is a mixture composed mainly of H2 and CO, which can be produced using different technologies depending on the carbon feedstock, including natural gas, CO2, coal, or biomass.…”

Section: Gtl Processesmentioning

confidence: 99%

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Caracterização e avaliação de catalisadores de Fe suportado em zeólita HZSM-5 para a síntese de Fishcer-Tropsch

Silva

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The increasing of energy demand and the concerns about the climate change make the development of synthetic fuels of utmost importance. The Fischer-Tropsch synthesis (FTS), a step in the gas-to-liquid processes, is a catalytic reaction that converts synthesis gas (CO and H2) into a wide range of hydrocarbons and is as a promising technology to produce synthetic fuels. This process occurs by a polymerization mechanism and its results are dependent on the operating conditions, and mainly on the catalyst used. Iron (Fe)/zeolite catalysts have been extensively studied for FTS due to their cost-effectiveness and bifunctional activity. However, little research has been reported addressing a complete understanding of physical-chemical properties of Fe/H-ZSM5 and the effects of varied reaction condition on FTS, as well as the kinetic assessment of CO conversion over this type of catalyst. This work focused on studying the synthesis, characterization, catalytic and kinetic assessments of Fe/H-ZSM5 for Fischer-Tropsch synthesis. The characterization results showed zeolite and iron oxide structures with crystallinity, high surface area of the support, and presence of mesopores. Fe particles were heterogeneously distributed on the support in different sizes, presenting multiple reduction stages. The catalysts were active for the Fischer-Tropsch synthesis, showing a maximum CO conversion of 86% at 350°C and an average conversion greater than 50% at 300°C. In general, the catalysts exhibited greater formation of short-chain, C2-C4, and medium chain, C5-C8, hydrocarbons. Temperature, pressure, space velocity and feed composition showed a considerable influence on CO conversion. The catalyst exhibited a stable activity over time without structural changes or coke deposition. Finally, the proposed kinetic model for the best performing catalyst followed the carbide route, considering a double site mechanism with dissociative adsorption of CO and H2, and participation of CO2, which was further confirmed by in situ characterization.

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Section: Temperature Programmed Reduction (Tpr)supporting

confidence: 56%

Section: Gtl Processesmentioning

confidence: 99%

Caracterização e avaliação de catalisadores de Fe suportado em zeólita HZSM-5 para a síntese de Fishcer-Tropsch

Silva

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“…The cobalt catalyst Co-Al 2 O 3 /SiO 2 was used for the selective synthesis of long-chain hydrocarbons (20.0 Co and 1.0 Al 2 O 3 wt.%) with a silica gel carrier KSKG (OOO Salavat Catalyst Plant, Salavat, Russia) [22], and zeolite HZSM-5 was used as the acid component. with a SiO 2 /Al 2 O 3 molar ratio of 40.5 (OOO Ishimbay Specialized Chemical Plant of Catalysts, Ishimbay, Russia) [21,32] and binder boehmite Al(OH)O (Sasol, TH 80).…”

Section: Catalyst Preparationmentioning

confidence: 99%

“…The catalyst was prepared by mixing the following powders (fraction <0.1 mm) in wt.%: catalyst Co-Al 2 O 3 /SiO 2 -35, HZSM-5-30, boehmite-35 [20,21,23,32]. To plasticize the boehmite binder, an aqueous-alcoholic solution of triethylene glycol and nitric acid was used (the nitric acid solution was prepared by adding 1-2 mL of nitric acid with a concentration of 65 wt.% in 90-100 mL of distilled water per 100 g of a mixture of powders; triethylene glycol was introduced based on the volume ratio nitric acid:triethylene glycol in a mixture of 1:3).…”

Section: Catalyst Preparationmentioning

confidence: 99%

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Selective Synthesis of a Gasoline Fraction from CO and H2 on a Co-SiO2/ZSM-5/Al2O3 Catalyst

Yakovenko,

Narochnyi,

Zubkov

et al. 2023

Catalysts

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This article reports on a simple method for producing high-octane gasoline from CO and H2 on a Co-Al2O3/SiO2/HZSM-5/Al2O3 hybrid catalyst. In the selected pressure range (0.5, 1.0, and 2.0 MPa), it was found that a decrease in pressure and an increase in temperature contribute to an increase in the content of branched hydrocarbons. The optimal technological parameters of the process were determined to ensure high selectivity and productivity for C5–C10 hydrocarbons: pressure—1.0 MPa, ratio H2/CO = 2, gas space velocity—1000 h−1, temperature—250 °C. The selectivity for the gasoline fraction is 65.2%, and the ratio of branched to linear hydrocarbons (iso/n index) is 2.3. Under the specified technological conditions, an experimental batch of gasoline fraction (1000 cm3) was produced at the pilot plant during 400 h of continuous operation. The main physicochemical and operational parameters of the experimental gasoline fraction of hydrocarbons have been determined. The octane number determined by the research method according to GOST R 52947-2019 is 78.5 units.

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Conversion of syngas to hydrocarbons using bifunctional cobalt catalysts containing HZSM-5 zeolites of various porous structures

Papeta,

Zubkov,

Chernyshev

et al. 2024

Russ Chem Bull

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Bifunctional Cobalt Catalyst for the Synthesis of Waxy Diesel Fuel by the Fischer–Tropsch Method: From Development to Commercialization. Part 1: Selection of the Industrial Sample of the Zeolite Component HZSM-5

Cited by 7 publications

References 33 publications

Caracterização e avaliação de catalisadores de Fe suportado em zeólita HZSM-5 para a síntese de Fishcer-Tropsch

Caracterização e avaliação de catalisadores de Fe suportado em zeólita HZSM-5 para a síntese de Fishcer-Tropsch

Selective Synthesis of a Gasoline Fraction from CO and H2 on a Co-SiO2/ZSM-5/Al2O3 Catalyst

Conversion of syngas to hydrocarbons using bifunctional cobalt catalysts containing HZSM-5 zeolites of various porous structures

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