Effect of Precursors of Fe-Based Fischer–Tropsch Catalysts Supported on Expanded Graphite for CO<sub>2</sub> Hydrogenation

Zhao, Rui; Meng, Xin; Yin, Qiang; Gao, Wenli; Dai, Wenhua; Jin, Daoming; Xu, Bowen; Xin, Zhong

doi:10.1021/acssuschemeng.1c05609

Cited by 15 publications

(7 citation statements)

References 59 publications

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Section: Catalyst Designmentioning

confidence: 99%

“…[117] Furthermore, 3D carbonaceous frameworks may enable the confinement of Fe actives sites, tuning deposit size and dispersion, which can be preserved by framework stability under reducing environments to restrict Fe sintering. [118,119] Wu et al explored honeycomb-structured graphene (HSG) as a support framework for K-promoted Fe catalysts. In their study, a 1.5 wt% K loading on Fe 3 O 4 supported by HSG (FeK1.5/HSG) produced a light olefin selectivity of 59% with a CO 2 conversion of 46% and a Fe time yield (FTY) of 123 μmol CO2 g Fe À1 s À1 .…”

Section: Porous Carbon Frameworkmentioning

confidence: 99%

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Light‐Enhanced Conversion of CO₂ to Light Olefins: Basis in Thermal Catalysis, Current Progress, and Future Prospects

et al. 2023

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Carbon dioxide (CO2) valorization to light olefins via sustainable energy input poses great industrial significance for the synthesis of key chemical feedstocks and reduces emission of this potent greenhouse gas. Solar energy, harnessed using light‐capturing catalytic materials, can negate external heat requirements for the energy‐intensive reaction. Presently, photothermal CO2‐Fischer–Tropsch synthesis (FTS)‐dedicated studies remain limited and are focused on the nonselective synthesis of C2+ hydrocarbons. A possible extension in catalyst design may be leveraged upon re‐examination of the better‐established thermal CO2‐FTS in conjunction with studies on photothermal FTS. To this end, herein, a narrative on the prominent chemical mechanisms and existing strategies for Fe‐based catalyst design within thermal CO2‐FTS as a foundation is established. Then, with the intent of regulating product selectivity, a gap in the adaptation of encapsulated structures involving zeolitic frameworks for CO2‐FTS is discussed. Next, current photothermal studies on C2+ hydrocarbon synthesis via FTS, CO2‐FTS, and relevant thermal‐assisted photocatalytic systems involving CO2 conversion are examined. Finally, the possible applications of structures encapsulated by porous media for boosting light utilization for photothermal CO2‐FTS are considered. Overall, the potential for the uptake of strategies aimed at producing multifunctional, light‐responsive future catalysts suitable for CO2‐FTS is explored.

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Section: Catalyst Designmentioning

confidence: 99%

Section: Porous Carbon Frameworkmentioning

confidence: 99%

Light‐Enhanced Conversion of CO₂ to Light Olefins: Basis in Thermal Catalysis, Current Progress, and Future Prospects

et al. 2023

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“…The results indicate that the formation of Fe 3 C was inhibited during CO 2 hydrogenation, which could explain the high selectivity of CO. The reasons for the promotion of CO 2 conversion, O/P ratio, and [17] 320 2.5 10000 43 15.7 22.8 61.5 / Fe2Zn1Al1 [35] 350 1.5 15000 34.5 27.9 24.55 47.55 nanoparticle FeZnK-NC [36] 320 3.0 7200 34.6 21.2 19.1 59.7 hollow sphere NaÀ Zn-Fe [37] 340 2.5 15000 38 15 15.29 69.71 nanoparticle Fe/C-KOH [38] 320 1.0 2400 34.6 20.7 15.51 63.79 nanoparticle FeNa/EG-A [39] 320 3.0 2000 42.4 8.3 13.74 77.96 film Note: T: reaction temperature (°C), P: reaction pressure (MPa), GHSV: gas hour space velocity (ml • g cat À 1 • h À 1 ), C: CO 2 conversion (%), S: products selectivity (%). The mole ratio of H 2 and CO 2 in the reaction process over all above catalysts was set as 3 : 1.…”

Section: Co 2 Hydrogenation Mechanism Investigationmentioning

confidence: 99%

Fabrication of Transition Metal (Mn, Co, Ni, Cu)‐Embedded Faveolate ZnFe₂O₄ Spinel Structure with Robust CO₂ Hydrogenation into Value‐added C₂⁺ Hydrocarbons

Cai

Han

et al. 2023

ChemCatChem

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CO 2 hydrogenation is the most efficient way to achieve the goal of "Carbon Neutral," and the transition metals (Mn, Co, Ni, Cu)embedded faveolate ZnFe 2 O 4 were fabricated and then evaluated with a CO 2 hydrogenation test. The systematic investigation of the effect of the introduced transition metals on the catalytic performance revealed that the activity was influenced by the surface structure, especially by the surface FeÀ C percentages. The introduction of Zn could increase CO 2 adsorption, thus promoting the reverse water gas shift (RWGS) reaction, which is considered the first step during CO 2 hydro-genation. The surface FeÀ C species played a significant role during the Fischer-Tropsch (FÀ T) synthesis, specific to the carbon chain growth process. Among all catalysts, Co-doped ZnFe 2 O 4 exhibited the highest surface FeÀ C percentage; therefore, it exhibited the optimal CO 2 conversion, C 2 + selectivity, C 2 -C 4 space-time yield, and olefin/paraffin ratio, which were 42.12 %, 81.26 %, 34.64 %, and 40.25 %, respectively. Furthermore, the introduced Co species can also act as active sites to enhance the activation and dissociation of CO 2 , as confirmed by theoretical adsorption calculations.

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“…The authors have cited additional references within the Supporting Information. [62][63][64][65][66][67][68][69][70][71]…”

Section: Supporting Informationmentioning

confidence: 99%

The Effect of Mn, Al Doping on the CO₂ Hydrogenation Performance of CaCO₃‐Supported Fe‐Based Catalysts

Cai¹,

Zhang

Cao³

et al. 2023

ChemPlusChem

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With increasingly serious environmental problems caused by the greenhouse effect, it has also become essential to reduce the concentration of CO2 in the atmosphere. In this paper, CaCO3‐supported Fe‐based catalysts doped with Mn, Al, and K are prepared by a straightforward method and used for CO2 hydrogenation. The fresh and spent catalysts were characterized by SEM‐EDS, BET, TG, CO2‐TPD, XRD, and XPS. The experimental results show that the highest CO2 conversion rate of Fe10Mn2Al10Ca is 35.99%, the maximum FTY value is 293.98 μmolCO2·g‐1 Fe·s‐1, the maximum O/P value is 6.61, and the lowest CO selectivity is 32.21%. At the same time, according to the characterization results, the doping of Mn and Al increased the Fe3O4/FeCx ratio. As the Fe3O4/FeCx ratio increases, the proportion of short‐chain hydrocarbons (CH4, C2‐4) in the products increases, and the proportion of long‐chain hydrocarbons (C5+) decrease. Therefore, the co‐doping of Mn and Al promotes the conversion of CO and reduces its selectivity, and promotes the formation of light olefins. Finally, it is hoped that this study can provide a reference for further research on CaCO3‐supported Fe catalysts.

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Effect of Precursors of Fe-Based Fischer–Tropsch Catalysts Supported on Expanded Graphite for CO₂ Hydrogenation

Cited by 15 publications

References 59 publications

Light‐Enhanced Conversion of CO₂ to Light Olefins: Basis in Thermal Catalysis, Current Progress, and Future Prospects

Light‐Enhanced Conversion of CO₂ to Light Olefins: Basis in Thermal Catalysis, Current Progress, and Future Prospects

Fabrication of Transition Metal (Mn, Co, Ni, Cu)‐Embedded Faveolate ZnFe₂O₄ Spinel Structure with Robust CO₂ Hydrogenation into Value‐added C₂⁺ Hydrocarbons

The Effect of Mn, Al Doping on the CO₂ Hydrogenation Performance of CaCO₃‐Supported Fe‐Based Catalysts

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Effect of Precursors of Fe-Based Fischer–Tropsch Catalysts Supported on Expanded Graphite for CO2 Hydrogenation

Cited by 15 publications

References 59 publications

Light‐Enhanced Conversion of CO2 to Light Olefins: Basis in Thermal Catalysis, Current Progress, and Future Prospects

Light‐Enhanced Conversion of CO2 to Light Olefins: Basis in Thermal Catalysis, Current Progress, and Future Prospects

Fabrication of Transition Metal (Mn, Co, Ni, Cu)‐Embedded Faveolate ZnFe2O4 Spinel Structure with Robust CO2 Hydrogenation into Value‐added C2+ Hydrocarbons

The Effect of Mn, Al Doping on the CO2 Hydrogenation Performance of CaCO3‐Supported Fe‐Based Catalysts

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Effect of Precursors of Fe-Based Fischer–Tropsch Catalysts Supported on Expanded Graphite for CO₂ Hydrogenation

Light‐Enhanced Conversion of CO₂ to Light Olefins: Basis in Thermal Catalysis, Current Progress, and Future Prospects

Light‐Enhanced Conversion of CO₂ to Light Olefins: Basis in Thermal Catalysis, Current Progress, and Future Prospects

Fabrication of Transition Metal (Mn, Co, Ni, Cu)‐Embedded Faveolate ZnFe₂O₄ Spinel Structure with Robust CO₂ Hydrogenation into Value‐added C₂⁺ Hydrocarbons

The Effect of Mn, Al Doping on the CO₂ Hydrogenation Performance of CaCO₃‐Supported Fe‐Based Catalysts