FeN particles confined inside CNT for light olefin synthesis from syngas: Effects of Mn and K additives

Yang, Zhiqiang; Pan, Xiulian; Wang, Junhu; Bao, Xinhe

doi:10.1016/j.cattod.2011.11.034

Cited by 76 publications

(69 citation statements)

References 40 publications

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“…They synthesized a series of FeN/CNT catalysts by heating conventional Fe/CNT catalysts at 450 • C in ammonia stream and found that iron nitride (Fe 2 N) exhibits higher activity and C 2 -C 4 alkenes selectivity than iron carbides, which also verifies the proposition suggested by Anderson et al [22]. Moreover, the effects of Mn and K added to FeN/CNT catalyst that prohibit second hydrogenation and facilitate CO adsorption are discussed [23].…”

Section: Introductionsupporting

confidence: 57%

“…The difference of iron nitride crystal phase is probably ascribed to the existence of manganese oxides on the surface of carbon support. The presence of Mn facilitates the formation of ζ-Fe 2 N phase according to previous studies [23]. Only a small fraction of iron nitrides was obtained on FeN-AC and FeN-10MnK-AC catalysts according to the lower intensity of the peaks attributed to ε-Fe 3 N and ζ-Fe 2 N. In order to give a detailed analysis of the nitrogen atoms and the interaction with iron, XPS analysis was conducted.…”

Section: Resultsmentioning

confidence: 89%

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Enhancement of Light Olefins Selectivity Over N-Doped Fischer-Tropsch Synthesis Catalyst Supported on Activated Carbon Pretreated with KMnO4

Tian

Wang

et al. 2019

Catalysts

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Ammonium iron citrate was used as an iron precursor in order to prepare N-doped catalysts supported on KMnO4 pretreated activated carbon (10MnK-AC). Iron nitride was synthesized in company with the formation of α-Fe2O3 on 10MnK-AC. The characterizations of the catalysts show that nitrogen atoms were doped into iron lattice rather than the networks of the carbon support. The performance of Fischer-Tropsch synthesis to light olefins (FTO) suggest an improvement in O/P ratio (olefins to paraffins molar ratio of C2–C4) over the iron catalysts supported on 10MnK-AC. The further promotion of light olefins selectivity (up to 44.7%) was obtained over FeN-10MnK-AC catalyst owing to the collaborative contribution of the electron donor effect of nitrogen and the suppression effect on the second hydrogenation over 10MnK-AC support.

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Section: Introductionsupporting

confidence: 57%

Section: Resultsmentioning

confidence: 89%

Enhancement of Light Olefins Selectivity Over N-Doped Fischer-Tropsch Synthesis Catalyst Supported on Activated Carbon Pretreated with KMnO4

Tian

Wang

et al. 2019

Catalysts

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“…hydrogenation [5], hydroformylation [6], methanol oxidation [7]) and gas-phase reactions (e.g. Fischer-Tropsch process [8], ammonia decomposition reactions [9]). …”

Section: Introductionmentioning

confidence: 99%

“…Co catalysts supported on Al 2 O 3 , TiO 2 , CeO 2 and SiO 2 showed higher selectivity to epoxide (50%~70%) but lower styrene conversion efficiency (~19%).Co/SBA-15 yielded a moderately higher conversion (23.3%), and Co/CNTs exhibited the highest selectivity to epoxide (80%) with higher styrene conversion (37%). Specifically, α−Al 2 O 3 , CeO 2 and γ−Al 2 O 3 supports with low surface area(8,13 and 86 m 2 /g) were not favorable for Co dispersion. TiO 2 (144 m 2 /g) had moderate surface area.…”

mentioning

confidence: 96%

Epoxidation of styrene using carbon nanotubes-supported cobalt catalysts

Jin

Zhu

et al. 2014

Inorganica Chimica Acta

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“…62,103 In a related chemical process, confined catalysts have also been applied to the formation of syn gas. Raman spectroscopy indicates an interaction between the manganese and the oxygen atoms of CO for the confined nanoparticles which, crucially, is not present for the nanoparticles on the CNT exterior.…”

Section: Syn Gas Conversionmentioning

confidence: 99%

Chemical reactions confined within carbon nanotubes

2016

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In this critical review, we survey the wide range of chemical reactions that have been confined within carbon nanotubes, particularly emphasising how the pairwise interactions between the catalysts, reactants, transition states and products of a particular molecular transformation with the host nanotube can be used to control the yields and distributions of products of chemical reactions. We demonstrate that nanoscale confinement within carbon nanotubes enables the control of catalyst activity, morphology and stability, influences the local concentration of reactants and products thus affecting equilibria, rates and selectivity, pre-arranges the reactants for desired reactions and alters the relative stability of isomeric products. We critically evaluate the relative advantages and disadvantages of the confinement of chemical reactions inside carbon nanotubes from a chemical perspective and describe how further developments in the controlled synthesis of carbon nanotubes and the incorporation of multifunctionality are essential for the development of this ever-expanding field, ultimately leading to the effective control of the pathways of chemical reactions through the rational design of multi-functional carbon nanoreactors.

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FeN particles confined inside CNT for light olefin synthesis from syngas: Effects of Mn and K additives

Cited by 76 publications

References 40 publications

Enhancement of Light Olefins Selectivity Over N-Doped Fischer-Tropsch Synthesis Catalyst Supported on Activated Carbon Pretreated with KMnO4

Enhancement of Light Olefins Selectivity Over N-Doped Fischer-Tropsch Synthesis Catalyst Supported on Activated Carbon Pretreated with KMnO4

Epoxidation of styrene using carbon nanotubes-supported cobalt catalysts

Chemical reactions confined within carbon nanotubes

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