Theoretical and experimental study of methane steam reforming reactions over nickel catalyst

Pistonesi, Carolina; Juan, Alfredo; Irigoyen, Beatriz; Amadeo, Norma

doi:10.1016/j.apsusc.2006.09.054

Cited by 66 publications

(24 citation statements)

References 30 publications

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“…The implementation of the surface oxygenated specie HCO(s) in the mechanism is supported by TPSR and TR-FTIR experiments [58] and theoretical calculations with UBI-QEP method [45,59]. Furthermore, DFT calculations of Wang et al [33] and Pistonesi et al [60] conclude that HCO species dissociation in CO and H fragments is a favorable reaction in steam reforming of methane on Ni(111).…”

Section: Surface Reaction Mechanismmentioning

confidence: 95%

Steam Reforming of Methane Over Nickel: Development of a Multi-Step Surface Reaction Mechanism

et al. 2011

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A detailed multi-step reaction mechanism is developed for modeling steam reforming of methane over nickel-based catalysts. The mechanism also includes partial and total oxidation reactions, water-gas shift reactions, formation of carbon monolayers, and methanation reactions. A method is presented for ensuring thermodynamic consistency in the development of surface reaction mechanisms. The applicability of the mechanism is tested by simulating experimental investigations of SR of methane on a Ni-coated monolithic cordierite catalyst as well as experimental studies from literature. The reactive flow in the channels of the experimentally used monolithic structures is modeled by a two-dimensional flow field analysis of a single monolith channel coupled with the reaction mechanism developed. The gas composition and surface coverage with adsorbed species are calculated as function of the position in the channel. The model developed is able to properly describe steam reforming of methane over the nickel catalysts for wide ranges of temperature and steam/ methane ratio.

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Section: Surface Reaction Mechanismmentioning

confidence: 95%

Steam Reforming of Methane Over Nickel: Development of a Multi-Step Surface Reaction Mechanism

et al. 2011

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“…The steam reforming reaction takes place through the dissociation of methane adsorbed onto the metallic Ni sites and the dissociation of water adsorbed at the metal-support interface to produce CO and H 2 [6][7][8]. To improve the catalytic activity and/or resistance to coking, modification of supports [9] such as mixed oxides [5,7,10,11] and perovskite-type oxides [12] has been attempted for the steam reforming catalysts.…”

Section: Introductionmentioning

confidence: 99%

Preparation of supported Ni catalysts on various metal oxides with core/shell structures and their tests for the steam reforming of methane

Kim

Kang

Kwak

et al. 2011

Chemical Engineering Journal

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“…Pistonesi et al [88] have studied HCO(s) on Ni(111) and proposed based on DFT calculations that during methane steam reforming on nickel, dissociation of HCO(s) to CO(s) and H(s) is favored. Zhou et al [14] concluded from their DFT studies that HCO is a key intermediate during dry reforming of methane to CO and H2.…”

Section: Hco On Ni Surfacementioning

confidence: 99%

Surface Reaction Kinetics of Steam- and CO2-Reforming as Well as Oxidation of Methane over Nickel-Based Catalysts

et al. 2015

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An experimental and kinetic modeling study on the Ni-catalyzed conversion of methane under oxidative and reforming conditions is presented. The numerical model is based on a surface reaction mechanism consisting of 52 elementary-step like reactions with 14 surface and six gas-phase species. Reactions for the conversion of methane with oxygen, steam, and CO2 as well as methanation, water-gas shift reaction and carbon formation via Boudouard reaction are included. The mechanism is implemented in a one-dimensional flow field description of a fixed bed reactor. The model is evaluated by comparison of numerical simulations with data derived from isothermal experiments in a flow reactor over a powdered nickel-based catalyst using varying inlet gas compositions and operating temperatures. Furthermore, the influence of hydrogen and water as co-feed on methane dry reforming with CO2 is also investigated.

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Theoretical and experimental study of methane steam reforming reactions over nickel catalyst

Cited by 66 publications

References 30 publications

Steam Reforming of Methane Over Nickel: Development of a Multi-Step Surface Reaction Mechanism

Steam Reforming of Methane Over Nickel: Development of a Multi-Step Surface Reaction Mechanism

Preparation of supported Ni catalysts on various metal oxides with core/shell structures and their tests for the steam reforming of methane

Surface Reaction Kinetics of Steam- and CO2-Reforming as Well as Oxidation of Methane over Nickel-Based Catalysts

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