Unravelling the K-promotion effect in highly active and stable Fe<sub>5</sub>C<sub>2</sub> nanoparticles for catalytic linear α-olefin production

Lee, Jin Hee; Lee, Hack-Keun; Kim, Kwangsoo; Rhim, Geun Bae; Youn, Myung-Joong; Jeong, Heondo; Park, Jae Hyung; Chun, Dong Hyun; Kim, Byung-Hyun; Park, Kang Hyun

doi:10.1039/d0ma00920b

Cited by 4 publications

(2 citation statements)

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“…The Fe 2p XPS spectrum of the Fe@C-1.0 sample carbonized at 700 • C was examined to identify the chemical states of Fe species (Figure 1D). Two obvious peaks located at ~724.7 and ~711.2 eV corresponded to Fe 3 O 4 in the final product of K-Fe 3 C@C nanohybrids, indicating the occurrence of surface oxidation due to air exposure [39,40]. Meanwhile, it was noteworthy that other coexistent peaks at ~720.1 eV and ~707.4 eV belonged to Fe 3 C species, according to the previous studies, which agreed well with the above XRD analysis [41].…”

Section: Characterization Of the Catalystssupporting

confidence: 87%

Direct Construction of K-Fe3C@C Nanohybrids Utilizing Waste Biomass of Pomelo Peel as High-Performance Fischer–Tropsch Catalysts

et al. 2022

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As the only renewable organic carbon source, abundant biomass has long been established and developed to mass-produce functionalized carbon materials. Herein, an extremely facile and green strategy was executed for the first time to in situ construct K-Fe3C@C nanohybrids directly by one-pot carbonizing the pomelo peel impregnated with Fe(NO3)3 solutions. The pyrolytically self-assembled nanohybrids were successfully applied in Fischer–Tropsch synthesis (FTS) and demonstrated high catalytic performance. Accordingly, the optimized K-Fe3C@C catalysts revealed excellent FTS activity (92.6% CO conversion) with highlighted C5+ hydrocarbon selectivity of 61.3% and light olefin (C2-4=) selectivity of 26.0% (olefin/paraffin (O/P) ratio of 6.2). Characterization results further manifest that the high performance was correlated with the in situ formation of the core-shell nanostructure consisting of Fe3C nanoparticles enwrapped by graphitized carbon shells and the intrinsic potassium promoter originated in pomelo peel during high-temperature carbonization. This work provided a facile approach for the low-cost mass-fabrication of high-performance FTS catalysts directly utilizing waste biomass without any chemical pre-treatment or purification.

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Section: Characterization Of the Catalystssupporting

confidence: 87%

Direct Construction of K-Fe3C@C Nanohybrids Utilizing Waste Biomass of Pomelo Peel as High-Performance Fischer–Tropsch Catalysts

et al. 2022

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“…(a) CO conversion and product selectivity of FTS results, (b) comparison of gasoline and C 5+ productivity results with previous works, − and (c) stability of the Fe/NDPC bio‑2 catalyst over a time on stream of 130 h.…”

Section: Resultsmentioning

confidence: 88%

Preparation of Nitrogen Doped Biochar-Based Iron Catalyst for Enhancing Gasoline-Range Hydrocarbons Production

Bai

Qin

et al. 2022

ACS Appl. Mater. Interfaces

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Developing catalysts to obtain high space time yield (STY) of gasoline-range hydrocarbons via Fischer−Tropsch synthesis (FTS) is a huge challenge due to the restriction of Anderson−Schulz−Flory distribution. Herein, a nitrogen doped biochar-based iron catalyst was synthesized by a one-step method using sugar cane bagasse as carbon precursor, which exhibited an excellent gasoline STY of 8.65 g C5−12 g Fe −1 h −1 , exceeding most reported catalysts. A strong positive relationship between the amount of pyrrolic N and long-chain hydrocarbons selectivity was displayed. The characterization results indicated that pyrrolic N configuration on anchor sites tuned effectively the dispersion of iron species and metal−support interaction as well as CO adsorption, improving the FTS performance.

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Redefining the Symphony of Light Aromatic Synthesis Beyond Fossil Fuels: A Journey Navigating through a Fe-Based/HZSM-5 Tandem Route for Syngas Conversion

Nawaz,

Blay-Roger,

Saif

et al. 2024

ACS Catal.

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The escalating concerns about traditional reliance on fossil fuels and environmental issues associated with their exploitation have spurred efforts to explore eco-friendly alternative processes. Since then, in an era where the imperative for renewable practices is paramount, the aromatic synthesis industry has embarked on a journey to diversify its feedstock portfolio, offering a transformative pathway toward carbon neutrality stewardship. This Review delves into the dynamic landscape of aromatic synthesis, elucidating the pivotal role of renewable resources through syngas/CO2 utilization in reshaping the industry’s net-zero carbon narrative. Through a meticulous examination of recent advancements, the current Review navigates the trajectory toward admissible aromatics production, highlighting the emergence of Fischer–Tropsch tandem catalysis as a game-changing approach. Scrutinizing the meliorated interplay of Fe-based catalysts and HZSM-5 molecular sieves would uncover the revolutionary potential of rationale design and optimization of integrated catalytic systems in driving the conversion of syngas/CO2 into aromatic hydrocarbons (especially BTX). In essence, the current Review would illuminate the path toward cutting-edge research through in-depth analysis of the transformative power of tandem catalysis and its capacity to propel carbon neutrality goals by unraveling the complexities of renewable aromatic synthesis and paving the way for a carbon-neutral and resilient tomorrow.

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Unravelling the K-promotion effect in highly active and stable Fe₅C₂ nanoparticles for catalytic linear α-olefin production

Abstract: The K-doped Fe5C2@C/NPC nanocatalyst shows excellent performance with high selectivity and productivity for catalytic linear α-olefin production.

Cited by 4 publications

References 50 publications

Direct Construction of K-Fe3C@C Nanohybrids Utilizing Waste Biomass of Pomelo Peel as High-Performance Fischer–Tropsch Catalysts

Direct Construction of K-Fe3C@C Nanohybrids Utilizing Waste Biomass of Pomelo Peel as High-Performance Fischer–Tropsch Catalysts

Preparation of Nitrogen Doped Biochar-Based Iron Catalyst for Enhancing Gasoline-Range Hydrocarbons Production

Redefining the Symphony of Light Aromatic Synthesis Beyond Fossil Fuels: A Journey Navigating through a Fe-Based/HZSM-5 Tandem Route for Syngas Conversion

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Unravelling the K-promotion effect in highly active and stable Fe5C2 nanoparticles for catalytic linear α-olefin production

Abstract: The K-doped Fe5C2@C/NPC nanocatalyst shows excellent performance with high selectivity and productivity for catalytic linear α-olefin production.

Cited by 4 publications

References 50 publications

Direct Construction of K-Fe3C@C Nanohybrids Utilizing Waste Biomass of Pomelo Peel as High-Performance Fischer–Tropsch Catalysts

Direct Construction of K-Fe3C@C Nanohybrids Utilizing Waste Biomass of Pomelo Peel as High-Performance Fischer–Tropsch Catalysts

Preparation of Nitrogen Doped Biochar-Based Iron Catalyst for Enhancing Gasoline-Range Hydrocarbons Production

Redefining the Symphony of Light Aromatic Synthesis Beyond Fossil Fuels: A Journey Navigating through a Fe-Based/HZSM-5 Tandem Route for Syngas Conversion

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Unravelling the K-promotion effect in highly active and stable Fe₅C₂ nanoparticles for catalytic linear α-olefin production