Conversion of syngas to triptane-rich liquid hydrocarbons via oxygenates

Matieva, Z. M.; Колесниченко, Н. В.; Snatenkova, Yu. M.; Максимов, А. Л.

doi:10.1016/j.fuel.2021.121407

Cited by 4 publications

(5 citation statements)

References 20 publications

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“…mainly of aromatic, branched paraffin and cycloparaffin hydrocarbons [9,10]. The octane number of the gasoline fraction obtained by these processes can reach 90 units.…”

Section: Resultsmentioning

confidence: 99%

“…MTG technology is a three-Mobil process [6], two-TIGAS process [7], or one-stage technological process [8]. The main products of this technology are hydrocarbons of the gasoline fraction, which consist mainly of aromatic, branched paraffin and cycloparaffin hydrocarbons [9,10]. The octane number of the gasoline fraction obtained by these processes can reach 90 units.…”

Section: Introductionmentioning

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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“…mainly of aromatic, branched paraffin and cycloparaffin hydrocarbons [9,10]. The octane number of the gasoline fraction obtained by these processes can reach 90 units.…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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“…The catalytic conversion of syngas can be crucial for the production of valued hydrocarbons such as light olefins and liquid fuels via either the Fischer–Tropsch synthesis (FTS) − or the so-called intermediating alcohol/dimethyl ether molecule to hydrocarbon (MTH) route. − The FTS process was invented by two German scientists Han Fischer and Franz Tropsch in 1920 . They derived eqs and below to highlight chemical reactions following the production of paraffin and olefins in FTS.…”

Section: Sources Of Syngasmentioning

confidence: 99%

Tandem Reactions over Zeolite-Based Catalysts in Syngas Conversion

et al. 2022

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Syngas conversion can play a vital role in providing energy and chemical supplies while meeting environmental requirements as the world gradually shifts toward a net-zero. While prospects of this process cannot be doubted, there is a lingering challenge in distinct product selectivity over the bulk transitional metal catalysts. To advance research in this respect, composite catalysts comprising traditional metal catalysts and zeolites have been deployed to distinct product selectivity while suppressing side reactions. Zeolites are common but highly efficient materials used in the chemical industry for hydroprocessing. Combining the advantages of zeolites and some transition metal catalysts has promoted the catalytic production of various hydrocarbons (e.g., light olefins, aromatics, and liquid fuels) and oxygenates (e.g., methanol, dimethyl ether, formic acid, and higher alcohols) from syngas. In this outlook, a thorough revelation on recent progress in syngas conversion to various products over metal-zeolite composite catalysts is validated. The strategies adopted to couple the metal species and zeolite material into a composite as well as the consequential morphologies for specific product selectivity are highlighted. The key zeolite descriptors that influence catalytic performance, such as framework topologies, proximity and confinement effects, acidities and cations, pore systems, and particle sizes are discussed to provide a deep understanding of the significance of zeolites in syngas conversion. Finally, an outlook regarding challenges and opportunities for syngas conversion using zeolite-based catalysts to meet emerging energy and environmental demands is also presented.

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“…Triptane (2,2,3-trimethylbutane) is the most valuable high-octane component of gasoline among C 5 –C 8 -isoparaffin hydrocarbons. Due to its highly branched structure and high octane number of 112, triptane is particularly effective for replacing aromatics in fuels. − Currently, there is no acceptable method of its production that could be recommended for industrial implementation, due to the low values of dimethyl ether conversion and triptane yield …”

Section: Introductionmentioning

confidence: 99%

“…It should be noted that these conditions are comfortable for obtaining gasoline from oxygenates but severe for the synthesis of triptane. The most active and selective catalyst for isoalkanes, including triptane, will be studied in the production of gasoline from CO and H 2 via the stage of obtaining oxygenates and in the direct synthesis of liquid hydrocarbons from CO x and H 2 …”

Section: Introductionmentioning

confidence: 99%

Conversion of Dimethyl Ether to Triptane-Rich Liquid Hydrocarbons on Pd-LaHY with a Hierarchical Porous Structure

Matieva,

Travkina,

Snatenkova

et al. 2023

Energy Fuels

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To obtain from dimethyl ether (DME) a mixture of liquid hydrocarbons enriched in isoalkanes, including triptane, catalysts based on HYh zeolite with a micro-meso-macroporous structure modified with lanthanum and palladium were used. The process was carried out under conditions typical for producing gasoline from synthesis gas (10 MPa, 340 °C, off-gas recirculation). Despite the rather harsh conditions for the synthesis of triptane, a mixture of hydrocarbons with a high content of isoalkanes (≥83 wt %, including triptane up to 17 wt %) is formed on the Pd-LaHYh/Al2O3 catalyst with high selectivity (≥88 wt %). The resulting product has a research octane number (RON) of 87, quite high for a product with low aromatics (4 wt %); is nontoxic; does not contain benzene, sulfur, and nitrogen oxides; and can be considered as a basic component of motor fuel. Features of the hierarchical porous structure determine the high C5+selectivity and stable operation of the catalyst for 72 h, which favorably distinguishes it from its analogue based on traditional microporous HY. The results obtained showed the prospects of zeolite HY with a hierarchical pore system in obtaining a triptane-rich hydrocarbon mixture from DME and will be used to develop new catalysts for the production of gasoline-range hydrocarbons from CO x and H2 in one stage and via the oxygenate synthesis.

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Conversion of syngas to triptane-rich liquid hydrocarbons via oxygenates

Cited by 4 publications

References 20 publications

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

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

Tandem Reactions over Zeolite-Based Catalysts in Syngas Conversion

Conversion of Dimethyl Ether to Triptane-Rich Liquid Hydrocarbons on Pd-LaHY with a Hierarchical Porous Structure

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