Nitrogen-rich mesoporous carbon supported iron catalyst with superior activity for Fischer-Tropsch synthesis

Liu, Guoguo; Chen, Qingjun; Oyunkhand, Erdenebatar; Ding, Shuya; Yamane, Noriyuki; Yang, Guohui; Yoneyama, Yoshiharu; Tsubaki, Noritatsu

doi:10.1016/j.carbon.2018.01.015

Cited by 49 publications

(28 citation statements)

References 53 publications

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“…To date, numerous efforts have been devoted to enhancing the C=2–C=4 selectivity via regulating the catalytic active species,4–8 catalyst supports,9–13 and promoters 14–17. The supported Fe nanoparticles are particularly attractive owing to their high catalytic activity and selectivity for C=2–C=4, as well as the low cost 4,9–15,18–20. Usually, the Fe-based active phase should remain in the size range of several nanometers due to the high selectivity of C=2–C=4, since FTO reactions are sensitive to the catalyst structure 18.…”

Section: Introductionmentioning

confidence: 99%

Stabilizing the active phase of iron-based Fischer–Tropsch catalysts for lower olefins: mechanism and strategy

et al. 2019

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Section: Introductionmentioning

confidence: 99%

Stabilizing the active phase of iron-based Fischer–Tropsch catalysts for lower olefins: mechanism and strategy

et al. 2019

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“…The mesopores with the diameters range of 10–50 nm are observed on the N0.5 catalyst. From the TEM‐mappings of the carbon catalysts (Figures S4–S6), N was introduced into the mesopores carbon, and it is highly dispersed in the carbon, which contributed to the high specific surface area and pore volume [8] . The introduction of N into the carbon was also confirmed by the X‐ray photoelectron spectroscopy (XPS) analysis.…”

Section: Resultsmentioning

confidence: 84%

“…From the TEM-mappings of the carbon catalysts (Figures S4-S6), Nwas introduced into the mesopores carbon, and it is highly dispersed in the carbon, which contributed to the high specific surface area and pore volume. [8] Thei ntroduction of Ni nto the carbon was also confirmed by the X-ray photoelectron spectroscopy (XPS) analysis.Ahigh-resolution XPS scan was applied to shed light on the Ns pecies in the mesopores carbon ( Figure 1d; Figure S7). Thedeconvolution of the N1ss pectra of N0.5 indicated that three Ns pecies existed in the mesopores carbon corresponding to pyridinic N, pyrrolic N, graphitic N [8] (Tables S2 and S3), where the pyridinic Na nd pyrrolic Na re most prevalent.…”

Section: Resultsmentioning

confidence: 85%

Nitrogen‐Doped Carbon‐Assisted One‐pot Tandem Reaction for Vinyl Chloride Production via Ethylene Oxychlorination

et al. 2020

Angewandte Chemie

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Abifunctional catalyst comprising CuCl 2 /Al 2 O 3 and nitrogen-doped carbon was developed for an efficient one-pot ethylene oxychlorination process to produce vinyl chloride monomer (VCM) up to 76 %y ield at 250 8 8Ca nd under ambient pressure,whichishigher than the conventional industrial two-step process (% 50 %) in as ingle pass.Int he second bed, active sites containing N-functional groups on the metal-free N-doped carbon catalyzed both ethylene oxychlorinationa nd ethylene dichloride (EDC) dehydrochlorination under the mild conditions.Benefitting from the bifunctionality of the Ndoped carbon, VCM formation was intensified by the surface Cl*-looping of EDC dehydrochlorination and ethylene oxychlorination. Both reactions were enhanced by in situ consumption of surface Cl* by oxychlorination, in which Cl* was generated by EDC dehydrochlorination. This work offers ap romising alternative pathwayt oV CM production via ethylene oxychlorination at mild conditions through asingle pass reactor.

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“…A high‐resolution XPS scan was applied to shed light on the N species in the mesopores carbon (Figure 1 d; Figure S7). The deconvolution of the N 1s spectra of N0.5 indicated that three N species existed in the mesopores carbon corresponding to pyridinic N, pyrrolic N, graphitic N [8] (Tables S2 and S3), where the pyridinic N and pyrrolic N are most prevalent.

true normalC_{2} normalH_{4} + 0 . 5 O_{2} + 2 HCl \to normalC_{2} normalH_{4} Cl_{2} + normalH_{2} normalO; Δ H = - 239.7 kJ mol^{- 1}

true normalC_{2} normalH_{4} Cl_{2} \to normalC_{2} normalH_{3} Cl + HCl; Δ H = 73.0 kJ mol^{- 1}

true normalC_{2} normalH_{4} + 0 . 5 O_{2} + HCl \to normalC_{2} normalH_{3} Cl + normalH_{2} normalO; Δ H = - 166.7 kJ mol^{- 1}

…”

Section: Resultsmentioning

confidence: 99%

Nitrogen‐Doped Carbon‐Assisted One‐pot Tandem Reaction for Vinyl Chloride Production via Ethylene Oxychlorination

et al. 2020

Angew Chem Int Ed

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View full text Add to dashboard Cite

Abifunctional catalyst comprising CuCl 2 /Al 2 O 3 and nitrogen-doped carbon was developed for an efficient one-pot ethylene oxychlorination process to produce vinyl chloride monomer (VCM) up to 76 %y ield at 250 8 8Ca nd under ambient pressure,w hich is higher than the conventional industrial two-step process (% 50 %) in as ingle pass.I nt he second bed, active sites containing N-functional groups on the metal-free N-doped carbon catalyzedboth ethylene oxychlorination and ethylene dichloride (EDC) dehydrochlorination under the mild conditions.Benefitting from the bifunctionality of the N-doped carbon, VCM formation was intensified by the surface Cl*-looping of EDC dehydrochlorination and ethylene oxychlorination. Both reactions were enhanced by in situ consumption of surface Cl* by oxychlorination, in which Cl* was generated by EDC dehydrochlorination. This work offers ap romising alternative pathway to VCM production via ethylene oxychlorination at mild conditions through as ingle pass reactor.

show abstract

Nitrogen-rich mesoporous carbon supported iron catalyst with superior activity for Fischer-Tropsch synthesis

Cited by 49 publications

References 53 publications

Stabilizing the active phase of iron-based Fischer–Tropsch catalysts for lower olefins: mechanism and strategy

Stabilizing the active phase of iron-based Fischer–Tropsch catalysts for lower olefins: mechanism and strategy

Nitrogen‐Doped Carbon‐Assisted One‐pot Tandem Reaction for Vinyl Chloride Production via Ethylene Oxychlorination

Nitrogen‐Doped Carbon‐Assisted One‐pot Tandem Reaction for Vinyl Chloride Production via Ethylene Oxychlorination

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