Production of hydrogen-rich gases from steam reforming of methane in an automatic catalytic microreactor

Levent, Menderes; Gunn, Dixon; El-Bousiffi, Mohamed

doi:10.1016/s0360-3199(02)00195-7

Cited by 80 publications

(16 citation statements)

References 23 publications

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“…Hydrogen as a separate component of synthesis gas is largely used in the manufacturing of ammonia, in a variety of petroleum hydrogenation processes, and as a clean fuel for burners or fuel cells. Steam reforming of methane (natural gas) has been the most widely used industrial process, because it is one of the most efficient technologies for hydrogen and the synthesis gas production from fossil fuels in large scale facilities reaching yields close to the thermodynamic equilibrium [1,2]. Steam reforming is a highly endothermic reaction and requires an efficient external energy supply, disadvantageous in small scale operation units.…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%

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

et al. 2011

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“…Even if a catalyst exists, the temperature should be higher than at least 450 °C. Mostly, this reaction occurs on the catalytic surface, and the gaseous reaction is assumed to be typically negligible (6), (7) . At such temperature, accompanying reactions occur, for example, the water-gas shift reaction.…”

Section: Introductionmentioning

confidence: 99%

Deduction of Proper Reaction Rate of Steam Methane Reforming over Catalyst Surface Validated with a Combination of One- and Two-Dimensional Simulations

Lin

Saito

Niina

et al. 2012

JTST

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Hydrogen can be used not only as a fuel, but also for the chemical processing. One of the applications is as a synthesis gas in the gas-to-liquid (GTL) process which produces liquid fuel from a gaseous one and has tremendous potential for the future energy industry. Steam methane reforming (SMR) is one of the major methods of hydrogen production. To optimize SMR, pressure dependence is important since the Fischer-Tropsch (FT) process, which is the oil production process in GTL, favors high pressure. In this study, using the rate expressions of SMR, which are obtained by experiment using a nickel-based catalyst supported on a metal plate in a rectangular channel, two-dimensional (2-D) simulation was performed at four different pressures ranging from 0.1 to 0.4 MPa in addition to one-dimensional (1-D) simulation. The reaction rates deduced from the experimental results on the basis of pseudo-bulk reaction naturally fit the 1-D simulation. The more precise 2-D simulation, however, inevitably needs some modification to reasonably predict the phenomena on the basis of the data from the pseudo-bulk reaction. As a result, the discrepancy between the results could be fixed by adjusting the reaction rate for the related pressure, and the adjusted factors show consistency between 1-D and 2-D calculations. Finally, the proper rate equations were estimated.

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“…Greatest difficulties in the SMR process are the reformers owing to their larger size, complex symmetry and greater expensive, and it is possible that some energy is lost during the conversion process [68]. However, much effort is being expended currently on the steam reforming of methane [69], ethanol [70] and methanol [71]. Coal gasification and water electrolysis are other options for hydrogen production.…”

Section: Tablementioning

confidence: 99%

Potential hydrogen and non-condensable gases production from biomass pyrolysis: Insights into the process variables

Uddin

Daud

Abbas

2013

Renewable and Sustainable Energy Reviews

109

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Production of hydrogen-rich gases from steam reforming of methane in an automatic catalytic microreactor

Cited by 80 publications

References 23 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

Deduction of Proper Reaction Rate of Steam Methane Reforming over Catalyst Surface Validated with a Combination of One- and Two-Dimensional Simulations

Potential hydrogen and non-condensable gases production from biomass pyrolysis: Insights into the process variables

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