Iron-containing catalysts of methane decomposition: accumulation of filamentous carbon

Avdeeva, L.B.; Reshetenko, Tatyana V.; Ismagilov, Z. R.; Likholobov, V. A.

doi:10.1016/s0926-860x(01)00959-0

Cited by 139 publications

(70 citation statements)

References 23 publications

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“…In addition, Fe-Co mixture has higher capacity of carbon compared to Fe. Higher carbon capacity refers to a better durability of catalyst towards deposited carbon preventing quick catalyst deactivation due to formation of encapsulating carbon [14]. While the deterioration in catalyst performance for 30%Fe-30%Co/Al2O3 is due to faster sintering as the amount of active sites increases.…”

Section: Effect Of Reduction Temperaturementioning

confidence: 99%

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Effect of Ce and Co Addition to Fe/Al2O3 for Catalytic Methane Decomposition

et al. 2016

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Abstract:Catalytic methane decomposition is studied in a fixed bed reactor. Two sets of bimetallic catalysts are employed, namely: 30%Fe-X%Ce/Al 2 O 3 and 30%Fe-X%Co/Al 2 O 3 , and compared with monometallic 30%Fe/Al 2 O 3 catalyst. The effect of promoting Fe with Ce and Co and reduction temperature are investigated. The results reveal that Ce addition has shown a negative impact on H 2 yield while a positive effect on H 2 yield and catalyst stability are observed with Co addition. In terms of number of moles of produced hydrogen per active sites, Fe/Al 2 O 3 has shown a higher number of moles of hydrogen compared to bimetallic catalysts. The catalyst reduced at 500˝C exhibits better activity as compared to the catalyst reduced at 950˝C. Carbon nano-tubes are deposited on the catalyst within the range of 14-73 nm diameter. Two types of carbon nanotubes are detected: Cα and Cγ.

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Section: Effect Of Reduction Temperaturementioning

confidence: 99%

“…Avdeeva et al [14] investigated the performance of Fe/Al 2 O 3 and Fe-Co/Al 2 O 3 using a fixed bed reactor to study the carbon deposited from methane decomposition. They concluded that Fe/Al 2 O 3 carbon capacity has increased when Co is added.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ce and Co Addition to Fe/Al2O3 for Catalytic Methane Decomposition

et al. 2016

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“…Bimetallic Fe-based catalysts such as Fe-Co [8,[21][22][23] or Fe-Mo [24][25][26][27][28][29][30][31][32][33][34] resulted in higher CNTs yield compared to undoped catalysts, besides preventing catalyst particle aggregation [35]. It is known that an increase in Mo content in bimetallic catalysts led to narrower nanotubes, i.e.…”

Section: Introductionmentioning

confidence: 99%

“…are the supports most commonly used for NC formation by CDM in high-loaded metal catalysts [21,37]. In Fe catalysts, the support acts like textural promoter affecting both the NC yields and the structure and morphology of the carbon nanofilaments produced [37].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen and multiwall carbon nanotubes production by catalytic decomposition of methane: Thermogravimetric analysis and scaling-up of Fe–Mo catalysts

Torres

Pinilla

Lázaro

et al. 2014

International Journal of Hydrogen Energy

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“…Many works have been reported on CMD using metal catalysts, such as Fe [12][13][14][15], Co [16,17], Ni [18][19][20][21], carbon materials [22][23][24][25][26][27], 2 Journal of Nanomaterials three red mud samples for hydrogen production by CMD. The highest methane conversion obtained in their study was 19.8% with a corresponding methane conversion rate of 18.0 × 10 −6 mol CH 4 /g cat /s, which is associated with a sample containing the highest proportion of iron, and two other samples exhibited poorer activity than this sample did.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Modified Red Mud-Supported Fe Catalysts for Hydrogen Production by Catalytic Methane Decomposition

Liu

Fang

et al. 2017

Journal of Nanomaterials

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A modified red mud-(MRM-) supported Fe catalyst ( Fe/MRM) was prepared using the homogeneous precipitation method and applied to methane decomposition to produce hydrogen. The TEM and SEM-EDX results suggested that the particle sizes of the Fe/MRM catalysts were much smaller than that of raw red mud (RM), and the active metal Fe was evenly distributed over the catalyst structure. Moreover, BET results indicated that the surface areas and pore volumes of the catalysts were significantly improved, and the pore sizes of Fe/MRM were distributed from 5 to 12 nm, which is typical for a mesoporous material. The activities of those catalysts for the catalytic decomposition of methane were studied at atmospheric pressure at a moderate temperature of 650 ∘ C; the results showed that the Fe/MRM catalysts were more active than RM and MRM. The methane conversion curves of Fe/MRM catalysts exhibited similar variation tendencies (three-step) during the reaction despite different Fe contents, and the loading amount of Fe clearly affected the activity of the catalysts.

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Iron-containing catalysts of methane decomposition: accumulation of filamentous carbon

Cited by 139 publications

References 23 publications

Effect of Ce and Co Addition to Fe/Al2O3 for Catalytic Methane Decomposition

Effect of Ce and Co Addition to Fe/Al2O3 for Catalytic Methane Decomposition

Hydrogen and multiwall carbon nanotubes production by catalytic decomposition of methane: Thermogravimetric analysis and scaling-up of Fe–Mo catalysts

Preparation of Modified Red Mud-Supported Fe Catalysts for Hydrogen Production by Catalytic Methane Decomposition

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