Direct Production of Hydrocarbons by Fischer-Tropsch Synthesis Using Newly Designed Catalysts

Hondo, Emmerson; Lu, Peng; Zhang, Peipei; Li, Jie; Tsubaki, Noritatsu

doi:10.1627/jpi.63.239

Cited by 4 publications

(6 citation statements)

References 22 publications

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“…[8,9] In addition, hydrogen as diversified energy carrier can be widely used in agriculture, petrochemical industry, new energy field, fine chemicals and commercial applications, especially as an important raw material for industrial ammonia synthesis and Fischer-Tropsch (F-T) synthesis to prepare high-value chemicals. [10][11][12][13] The latest progress in fuel cell technology provides efficient energy production through a low-carbon route with hydrogen as the main component. [14,15] Unlike traditional fossil fuels, hydrogen is a secondary energy source that does not exist in free hydrogen form in nature due to its minimal density, but it can exist in the form of compounds such as hydrocarbons, water and biomass.…”

Section: Introductionmentioning

confidence: 99%

“…Importantly, hydrogen energy represents a clean form as the only by‐product is water, which can meet flexible use across time and region, and exhibited good potential applied to mobile equipment by proton exchange membrane fuel cell (PEMFC) [8,9] . In addition, hydrogen as diversified energy carrier can be widely used in agriculture, petrochemical industry, new energy field, fine chemicals and commercial applications, especially as an important raw material for industrial ammonia synthesis and Fischer‐Tropsch (F‐T) synthesis to prepare high‐value chemicals [10–13] …”

Section: Introductionmentioning

confidence: 99%

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Recent Status in Catalyst Modification Strategies for Hydrogen Production from Ethanol Steam Reforming

2023

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Hydrogen as the most promising alternative energy vector to fossil stands out due to its highly energy density and zero pollution. Extending the hydrogen feedstock from hydrocarbons (e. g., methane) to biomass derived oxygen‐containing compounds (CH3OH, C2H5OH etc.) provides the opportunity for low environmental pollution as well as a promising sustainable energy economy. Recently, ethanol with less toxic and high calorific value than traditional fossil energy (coal, oil and natural gas) has garnered significant attention for ethanol steam reforming (ESR) to produce hydrogen, a key component in fuel cell cogeneration system. This paper reviews recent advances on the catalyst developing strategies including structural constitution control, oxide supports modification, surface topography control and bimetallic interactions, and further discusses the catalytic mechanisms, anti‐carbon deposition and sintering resistance strategies on the ethanol steam reforming (ESR) processes. Finally, the challenges and possible strategies for the development of high‐performance catalysts in terms of fundamental research have been discussed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recent Status in Catalyst Modification Strategies for Hydrogen Production from Ethanol Steam Reforming

2023

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“…However, the most challenging step in the FT process is the activation of CO, which is essential for subsequent carbon chain elongation through hydrogenation . By controlling various factors, such as the NP size, dispersion, crystalline phases, composition (presence or additives and promoters), support materials, and reaction parameters, the selectivity for heavy hydrocarbons (C5+) can be fine-tuned . Ru NPs are commonly supported on various materials, such as metal oxides ( e .…”

Section: Introductionmentioning

confidence: 99%

“…3 By controlling various factors, such as the NP size, dispersion, crystalline phases, composition (presence or additives and promoters), support materials, and reaction parameters, the selectivity for heavy hydrocarbons (C5+) can be fine-tuned. 4 Ru NPs are commonly supported on various materials, such as metal oxides (e.g., Al 2 O 3 , SiO 2 , TiO 2 ), carbon-based supports, and zeolites, 5 which enhance structural stability, catalyst dispersion, and catalytic properties. Combining Ru with Al 2 O 3 as a support material offers advantages such as enhanced dispersion, 6,7 thermal stability, 7 acidic properties, 8 promoter effects, 9 etc.…”

Section: ■ Introductionmentioning

confidence: 99%

Predicting CO Interaction and Activation on Inhomogeneous Ru Nanoparticles Using Density Functional Theory Calculations and Machine Learning Models

Rivera Rocabado,

Aizawa,

Ishimoto

2023

J. Phys. Chem. C

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Accurately predicting catalyst performance based on theoretical models is crucial for the rapid and cost-effective design of materials with specific catalytic functions and enhanced durability. In this study, we investigate the interaction and activation of CO on isolated Ru nanoparticles of varying sizes, approximated by adsorption energies and vibrational frequencies, respectively. By employing a linear combination of the nanoparticles' geometric and electronic properties prior to the CO interaction, we describe the CO interaction and activation. Through rigorous validation, we demonstrate the reliability of the models and their ability to predict the influence of the nanoparticle size on the CO adsorption energies and vibrational frequencies. To estimate the effect of Al 2 O 3 as a support material on CO adsorption and activation, we utilize the validated models, effectively bypassing the high computational cost of density functional theory calculations. Our findings reveal that the presence of the support material leads to increased instability in CO adsorption, particularly near the Ru/Al 2 O 3 interface. Furthermore, this study uncovers the localized effect of the support material, shedding light on its pivotal role in facilitating CO activation and lowering the activation energy. These insights have significant implications for catalytic reactions, particularly those encountered in Fischer-Tropsch reactors used for the production of synthetic liquid fuel.

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“…1 引言低碳烯烃(特别是乙烯、丙烯、丁烯等)是最重要和最基本的有机化工原料, 传统的生产工艺严重依赖于石油, 根据我国"相对富煤、缺油、少气"的资源状况, 以 "煤"代"油"生产低碳烯烃, 是实现我国煤炭清洁高效利用和保证国家能源安全的重要途径之一 [1][2][3][4][5] , 开发煤基合成气制取低碳烯烃技术具有重要的战略意义和实际应用价值. 煤经合成气可通过间接法或直接法制取低碳烯烃, 间接法中合成气经甲醇制低碳烯烃(MTO)技术已实现商业化 [6][7][8] . 与间接法相比, 合成气直接制低碳烯烃工艺省去了甲醇(或二甲醚)合成这一中间过程, 具有工艺流程短、能耗低、投资和运行费用较低, 富产高附加值油品等特点, 在工艺流程优化、节能降耗和烯烃选择性等方面带来较大创新, 市场前景广阔.…”

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Preparation of Fe@Si/S-34 Catalysts and Its Catalytic Performance for Syngas to Olefins

Chen¹,

Meng²,

Lu³

et al. 2023

Acta Chimica Sinica

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The direct synthesis of light olefins from syngas via Fischer-Tropsch synthesis reaction is a promising technology for direct synthesis of olefins from syngas. The key is to improve the selectivity of light olefins through the regulation of product distribution. In this work, the hydrophobic Fe@Si catalyst was prepared by room temperature solid state method-Stöber-silylation method, and then the catalyst was combined with SAPO-34 molecular sieves with different contents to prepare Fe@Si/S-34 composite catalysts. The effects of SAPO-34 molecular sieve content on the physicochemical properties of the catalysts were investigated by X-ray diffraction, scanning electron microscopy, N2 adsorption-desorption, NH3 temperature programmed desorption and water contact angle measurement. The results showed that the content of SAPO-34 molecular sieve has significant influence on the surface area, pore volume, acidity and hydrophobicity of the catalysts. With the increase of SAPO-34 molecular sieve content, the specific surface area and total pore volume of the catalyst increased, the weak acid and medium-strong acid sites increased, and the hydrophobicity weakened. The catalytic performance evaluation results showed that the Fe@Si/S-34 composite catalyst decomposed C5+ hydrocarbons into light hydrocarbons, significantly reduced the selectivity of C5+ products and increased the selectivity of C2～C4 hydrocarbons. Appropriate SAPO-34 molecular sieve could significantly improve the selectivity of C2～C4 olefins. When the mass ratio of Fe@Si catalyst to SAPO-34 is 2, the C2～C4 olefin selectivity of Fe@Si/S-34 catalyst is the highest, the conversion of CO is 80.0%, the selectivity of CO2 in the product is 8.9%, and the selectivity of C2～C4 olefins is 31.1%. In this study, the hydrophobicity of Fe@Si catalyst and the cracking activity of SAPO-34 molecular sieve for C5+ hydrocarbon were coupled together to inhibit the water-gas shift (WGS) reaction, reduce the CO2 selectivity and obtain higher C2～C4 olefin selectivity, which provided a new strategy for the development of catalysts for Fischer-Tropsch synthesis to olefins.

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Direct Production of Hydrocarbons by Fischer-Tropsch Synthesis Using Newly Designed Catalysts

Cited by 4 publications

References 22 publications

Recent Status in Catalyst Modification Strategies for Hydrogen Production from Ethanol Steam Reforming

Recent Status in Catalyst Modification Strategies for Hydrogen Production from Ethanol Steam Reforming

Predicting CO Interaction and Activation on Inhomogeneous Ru Nanoparticles Using Density Functional Theory Calculations and Machine Learning Models

Preparation of Fe@Si/S-34 Catalysts and Its Catalytic Performance for Syngas to Olefins

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