Hydrogen production by methane decomposition: Origin of the catalytic activity of carbon materials

Serrano, David; Botas, Juan A.; Fierro, J.L.G.; Guil-López, R.; Pizarro, Patricia; Gómez, Gabriel J. García

doi:10.1016/j.fuel.2009.11.030

Cited by 147 publications

(104 citation statements)

References 32 publications

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“…In addition to this, three different peaks corresponding to C 1s core-level were registered for all used catalysts at 284.9 eV (C-C/C-H) [24], 286.3-286.5 eV (C-O) [25] and 288.5-288.7 eV (R-COO) [26]. These peaks could be assigned to surface carbon deposition during the reaction.…”

Section: Xps-tgamentioning

confidence: 72%

Biobutanol Dehydrogenation to Butyraldehyde over Cu, Ru and Ru–Cu Supported Catalysts. Noble Metal Addition and Different Support Effects

et al. 2011

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n-Butanol dehydrogenation to butyraldehyde was studied using Ru, Cu and Ru-Cu catalysts supported on ceria, titania and zirconia. Among the monometallic Cu and Ru supported catalysts, the non-noble catalytic systems recorded higher conversions and butyraldehyde selectivities than the noble catalysts. Furthermore, the 5Cu/ZrO 2 catalyst had the best catalytic activity and selectivity. This behaviour is related to the good metal phase dispersion on the zirconia structure. The addition of Ru reduced this catalyst's performance because Ru incorporation weakened the Cu-support interaction and favoured the sintering of the Cu metal crystallites.

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Section: Xps-tgamentioning

confidence: 72%

Biobutanol Dehydrogenation to Butyraldehyde over Cu, Ru and Ru–Cu Supported Catalysts. Noble Metal Addition and Different Support Effects

et al. 2011

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“…Regarding the different catalytic activities of chars, most of the prior studies [17][18][19] concluded that the active centers for methane decomposition are high-energy sites (HES), such as surface defects, low-coordination sites, and other energetic abnormalities. Low-rank coal with a lower degree of crystallinity has a larger number of HES.…”

Section: Blank Experiments and Methane Cracking Over Charmentioning

confidence: 99%

Catalytic Performance of Coal Char for the Methane Reforming Process

Sun

et al. 2014

Chem Eng & Technol

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A new concept of combined coal gasification and methane reforming in a single reactor was proposed as an alternative path for syngas production using coal and coalbed methane. Here, the results of this process are summarized. The experimental work was carried out in a fixed-bed reactor. Methane cracking, CO 2 /steam reforming of methane over coal char, and the effects of chars made from different types of parent coal on methane conversion were examined. The catalytic effect of coal char on methane cracking and reforming increased with decreasing coalification degree. A synergistic effect was observed in that, while the coal char catalyzed the methane reforming reactions, gasification of the coal char took place simultaneously, which counter-balanced the deposition of carbon especially for the methane-steam-char system.

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“…In the above-described systems using a carbon-based catalyst, the methane decomposition activity might be affected by the oxidized surface at the initial stage and by the pore distribution in the steady state stage before poreplugging 26) . However, the initial activity might be affected not by the oxidized surface but by defects in the graphene layers 27) . An alternative redox system has been proposed that can produce hydrogen through two reactions, reduction of an oxide such as In2O3 or FeOx by methane decomposition followed by oxidation of the catalyst using steam to produce pure hydrogen 28) .…”

Section: Direct Conversion Of Methanementioning

confidence: 99%

Methane Conversion Assisted by Plasma or Electric Field

Oshima

Sekine

2013

J. Jpn. Petrol. Inst.

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Direct conversion of methane to other valuable products such as ethylene, methanol, benzene, carbon, hydrogen, and syngas has been widely investigated. Such conversion requires high temperatures because of the strong C-H bond in CH4, and such high-temperature reactions present various problems: sequential reaction to decrease the selectivity to target products, need for multiple heat exchangers to use or recover high-temperature waste heat, materials that are stable at high temperatures, etc. To solve these problems, several trials have been undertaken to lower reaction temperatures using plasma, Non-Faradaic Electrochemical Modification of Catalytic Activity (NEMCA), and electric fields. This review describes recent trends in methane conversion, and describes our methods to lower the reaction temperature.

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Hydrogen production by methane decomposition: Origin of the catalytic activity of carbon materials

Cited by 147 publications

References 32 publications

Biobutanol Dehydrogenation to Butyraldehyde over Cu, Ru and Ru–Cu Supported Catalysts. Noble Metal Addition and Different Support Effects

Biobutanol Dehydrogenation to Butyraldehyde over Cu, Ru and Ru–Cu Supported Catalysts. Noble Metal Addition and Different Support Effects

Catalytic Performance of Coal Char for the Methane Reforming Process

Methane Conversion Assisted by Plasma or Electric Field

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