Carbon deposition and phase transformations in red mud on exposure to methane

Sushil, Snigdha; Alabdulrahman, Abdullah M.; Balakrishnan, Malini; Batra, Vidya S.; Blackley, Ross A.; Clapp, John W.; Hargreaves, J. S. J.; Monaghan, Andrew; Pulford, I. D.; Rico, José Luis

doi:10.1016/j.jhazmat.2010.04.046

Cited by 52 publications

(30 citation statements)

References 34 publications

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“…It is worth noting that Red Mud generates the highest proportion of methane at 500 • C (14.1 wt%), which may be caused by the hydrocracking reaction of styrene (to lead toluene and methane), which has been previously mentioned, proposed in the GC-MS liquid composition discussion (Table 7). Additionally, the great proportions of CO 2 obtained with Red Mud may be attributed to the catalytic activity of Fe 2 O 3 , since it has been reported [42] that the formation of CO 2 is produced by the stepwise reduction of haematite (Fe 2 O 3 ) to wustite (FeO) and metallic iron (Fe) by means of the reaction between hydrocarbons and Fe 2 O 3 . It has to be mentioned that both catalyst enhance hydrogen production, which could be attributed to the hydrogen abstraction that takes place during aromatization reactions.…”

Section: Methodsmentioning

confidence: 99%

“…These differences may be attributed to the fact that the composition of Red Mud varies depending of the specific process from which it is obtained. It has been reported [42] that some Red Mud components such as Na 2 O may act as poison, diminishing the catalytic activity. Different Na 2 O contents may be the reason for the differences in Red Mud activities found by different authors.…”

Section: Pyrolysis Liquidsmentioning

confidence: 99%

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Catalytic pyrolysis of plastic wastes with two different types of catalysts: ZSM-5 zeolite and Red Mud

López

Marco

Caballero

et al. 2011

Applied Catalysis B: Environmental

399

162

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Section: Methodsmentioning

confidence: 99%

Section: Pyrolysis Liquidsmentioning

confidence: 99%

Catalytic pyrolysis of plastic wastes with two different types of catalysts: ZSM-5 zeolite and Red Mud

López

Marco

Caballero

et al. 2011

Applied Catalysis B: Environmental

399

162

View full text Add to dashboard Cite

“…This interesting phenomenon may be ascribed to superimposition of the graphitic C [42] ∘ ) was observed from the pattern of the 20Fe/MRMafter CMD; this species has also been discovered by Sushil et al [42] and Torres et al [17]. Next, the morphology and structure of the carbons were determined (see below).…”

Section: Xrd and Xrf Analyses Of Catalystsmentioning

confidence: 61%

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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“…As previously reported, goethite and hematite are major crystalline components of the RM7. 15 Given the fact that the samples are complex mixtures containing a number of different components, identification of the exact composition of the red mud samples by XRD can be highly challenging and not fully reliable. Surveying the literature, major phases present in many red mud samples can be expected to be hematite, goethite and Gibbsite, along with various sodium aluminium hydrosilicates 24 .…”

Section: Resultsmentioning

confidence: 99%

The carbon deposits formed by reaction of a series of red mud samples with methanol

Hargreaves

McFarlane

et al. 2016

RSC Adv.

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(2016) The carbon deposits formed by reaction of a series of red mud samples with methanol. RSC Advances, 2016(6), pp. 46421-46426. (doi:10.1039 This is the author's final accepted version.There may be differences between this version and the published version. You are advised to consult the publisher's version if you wish to cite from it.http://eprints.gla.ac.uk/118679/ RSC AdvancesThis is an Accepted Manuscript, which has been through the Royal Society of Chemistry peer review process and has been accepted for publication.Accepted Manuscripts are published online shortly after acceptance, before technical editing, formatting and proof reading. Using this free service, authors can make their results available to the community, in citable form, before we publish the edited article. This Accepted Manuscript will be replaced by the edited, formatted and paginated article as soon as this is available.You can find more information about Accepted Manuscripts in the Information for Authors.

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Carbon deposition and phase transformations in red mud on exposure to methane

Cited by 52 publications

References 34 publications

Catalytic pyrolysis of plastic wastes with two different types of catalysts: ZSM-5 zeolite and Red Mud

Catalytic pyrolysis of plastic wastes with two different types of catalysts: ZSM-5 zeolite and Red Mud

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

The carbon deposits formed by reaction of a series of red mud samples with methanol

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