Catalytic properties of carbon nano-filaments produced by iron-catalysed reforming of ethanol

Jankhah, Sepideh; Abatzoglou, Nicolas; Gitzhofer, F.; Blanchard, Jasmin; Hassani, Hicham Oudghiri

doi:10.1016/j.cej.2007.08.031

Cited by 22 publications

(10 citation statements)

References 21 publications

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“…The published work provides theoretical thermodynamic analysis of chemical equilibrium conditions and full data explaining the role of cracking and DR reactions. Additional work has proven that the CNF themselves present catalytic activity which is even higher in terms of turnover frequency (TOF). This activity is ascribed to iron carbides, and the fact that the active phase is better dispersed (nanometric grains) than at the surface of a nonporous (2D) catalyst explains the observations.…”

Section: Generic Catalytic Technologiesmentioning

confidence: 99%

Review of catalytic syngas production through steam or dry reforming and partial oxidation of studied liquid compounds

Abatzoglou

Fauteux‐Lefebvre

2015

WIREs Energy & Environment

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Although natural gas is the main feedstock for the production of hydrogen and syngas, liquid hydrocarbons and oxygenated compounds are of interest for reasons associated with their local availability and their easiness to be stored and transported. This review focuses on steam, dry, and partial oxidation of liquid feedstock. The vast research work published in these fields does not allow for a full coverage of the entire literature. Instead, the authors present from both scientific and technical stand points the knowledge which seems more promising toward eventual improvements of commercial units and utilization of new catalytic formulations. Since traditional steam reforming is relatively very well covered by other reviews, this review has mainly focused on the relatively recent works on glycerol, a biodiesel production by-product, and the widely available and distributed commercial diesel/biodiesel. New promising catalytic formulations are proposed and are actually under testing for eventual commercial use. Nevertheless these catalysts might be eventually efficient for gaseous (e.g., CH 4 ) hydrocarbons conversion to syngas. Dry and partial oxidation has also been reviewed both globally and in an incremental way. All liquid feedstock tested are reported. Finally, this review tries to bridge the gap between fundamental and factual research in this field. Both are important but the interpretation of the results remains a strong function of each paper's main focus. This review does not pretend that this gap is fully bridged but it has the ambition to help the researchers as well as the practitioners in this area to synthesize the existing knowledge.

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Section: Generic Catalytic Technologiesmentioning

confidence: 99%

Review of catalytic syngas production through steam or dry reforming and partial oxidation of studied liquid compounds

Abatzoglou

Fauteux‐Lefebvre

2015

WIREs Energy & Environment

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“…This is why research efforts have focused on optimizing and controlling the formation of these types of carbon structures, instead of inhibiting their growth [2]. Although, usually, carbon formation on catalysts causes the deactivation of the catalyst [3], CNF are shown to grow in such a way that the catalytically active sites maintain their activity [4]. CNF properties make them a good substitute to high-cost materials used currently in various applications such as reinforcement of composites [5], manufacturing Table 2.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Dry Reforming and Cracking of Ethylene for Carbon Nanofilaments and Hydrogen Production Using a Catalyst Derived from a Mining Residue

et al. 2019

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In this study, iron-rich mining residue (UGSO) was used as a support to prepare a new Ni-based catalyst via a solid-state reaction protocol. Ni-UGSO with different Ni weight percentages wt.% (5, 10, and 13) were tested for C2H4 dry reforming (DR) and catalytic cracking (CC) after activation with H2. The reactions were conducted in a differential fixed-bed reactor at 550–750 °C and standard atmospheric pressure, using 0.5 g of catalyst. Pure gases were fed at a molar ratio of C2H4/CO2 = 3 for the DR reaction and C2H4/Ar = 3 for the CC reaction. The flow rate is defined by a GHSV = 4800 mLSTP/h.gcat. The catalyst performance is evaluated by calculating the C2H4 conversion as well as carbon and H2 yields. All fresh, activated, and spent catalysts, as well as deposited carbon, were characterized by Brunauer–Emmett–Teller (BET), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDX), transmission electron microscopy (TEM), temperature programmed reduction (TPR), and thermogravimetric analysis (TGA). The results so far show that the highest carbon and H2 yields are obtained with Ni-UGSO 13% at 750 °C for the CC reaction and at 650 °C for the DR reaction. The deposited carbon was found to be filamentous and of various sizes (i.e., diameters and lengths). The analyses of the results show that iron is responsible for the growth of carbon nanofilaments (CNF) and nickel is responsible for the split of C–C bonds. In terms of conversion and yield efficiencies, the performance of the catalytic formulations tested is proven at least equivalent to other Ni-based catalyst performances described by the literature.

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“…Ethanol DR is the basis of this protocol. CNF so-derived, without any modifications, present catalytic properties for the same reaction, attributed to their ferric carbide content of CNF [13,14].…”

Section: Introductionmentioning

confidence: 99%

“…The catalyst was previously heat-treated under gaseous mixture flow (99% Ar and 1% O2) at 800°C for 1 h to partially oxidize the surface [13,14]. The reaction was carried out in a fixed-bed isothermal quartz reactor at 550°C.…”

Section: Cnf Production and Functionalizationmentioning

confidence: 99%

“…More specifically, the literature on carbon materials as support of reforming catalysts can be summarized as follows: SR of methanol over NiCu/CNT(carbon nanotubes) [11], catalytic reforming of dimethoxymethane over Cu/CNF (carbon nanofilaments) and Ni/CNF [12], DR of ethanol over FeCx/CNF [13], [14], DR of methane over metallurgical coke and activated carbons [15], oxidative SR of ethanol over Co/CNF [16], SR of propane over Ni/MWCNT (Nifunctionalized multiwall carbon nanotubes) [17], SR of bio-oil over Ni/CNF [18].…”

Section: Introductionmentioning

confidence: 99%

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Ni-doped Carbon Nanofilaments (Ni-CNF): Preparation and Use as Reforming Catalyst

Abatzoglou¹,

Plascencia²

2015

IJTAN

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Catalytic properties of carbon nano-filaments produced by iron-catalysed reforming of ethanol

Cited by 22 publications

References 21 publications

Review of catalytic syngas production through steam or dry reforming and partial oxidation of studied liquid compounds

Review of catalytic syngas production through steam or dry reforming and partial oxidation of studied liquid compounds

Catalytic Dry Reforming and Cracking of Ethylene for Carbon Nanofilaments and Hydrogen Production Using a Catalyst Derived from a Mining Residue

Ni-doped Carbon Nanofilaments (Ni-CNF): Preparation and Use as Reforming Catalyst

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