Partial oxidation of methane to methanol in a flow reactor at elevated pressure

Rytz, Daniel W.; Baiker, Alfons

doi:10.1021/ie00058a007

Cited by 56 publications

(29 citation statements)

References 10 publications

(17 reference statements)

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“…The applied reactor material is quartz, which is considered to be comparatively inert. Experiments [39] and theoretical investigations [40] have, nonetheless, indicated that even quartz may exhibit a minor reactivity toward hydrocarbon oxidation at high pressure. Inhibition of methane oxidation at intermediate temperatures by heterogeneous reactions has been reported [41] and may conceivably be attributed to loss of CH 3 OO radicals on the reactor wall [42].…”

Section: Methodsmentioning

confidence: 99%

Sensitizing effects of NOx on CH4 oxidation at high pressure

Rasmussen

Glarborg

2008

Combustion and Flame

132

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Section: Methodsmentioning

confidence: 99%

Sensitizing effects of NOx on CH4 oxidation at high pressure

Rasmussen

Glarborg

2008

Combustion and Flame

132

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“…The applied reactor material is quartz, which is considered to be comparatively inert. Experiments [196] and theoretical investigations [197] have, nonetheless, indicated that even quartz may exhibit a minor reactivity toward hydrocarbon oxidation at high pressure.…”

Section: Ch 4 /O 2 Experimentsmentioning

confidence: 99%

Experimental measurements and kinetic modeling of CH₄/O₂ and CH₄/C₂H₆/O₂ conversion at high pressure

Rasmussen

Jakobsen

Glarborg

2008

Int J of Chemical Kinetics

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A detailed chemical kinetic model for homogeneous combustion of the light hydrocarbon fuels CH4 and C2H6 in the intermediate temperature range roughly 500–1100 K, and pressures up to 100 bar has been developed and validated experimentally. Rate constants have been obtained from critical evaluation of data for individual elementary reactions reported in the literature with particular emphasis on the conditions relevant to the present work. The experiments, involving CH4/O2 and CH4/C2H6/O2 mixtures diluted in N2, have been carried out in a high‐pressure flow reactor at 600–900 K, 50–100 bar, and reaction stoichiometries ranging from very lean to fuel‐rich conditions. Model predictions are generally satisfactory. The governing reaction mechanisms are outlined based on calculations with the kinetic model. Finally, the mechanism was extended with a number of reactions important at high temperature and tested against data from shock tubes, laminar flames, and flow reactors. © 2008 Wiley Periodicals, Inc. Int J Chem Kinet 40: 778–807, 2008

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“…maximum target yields) and specificity exists, because both are controlled by the reaction conditions. Usually, the methane conversion decreases when a high selectivity for a reaction product, for example methanol, is realized [17]. In their studies, a flow reactor with defined temperature profile has been used to investigate the reaction kinetics.…”

Section: Introductionmentioning

confidence: 99%

Partial Oxidation of Methane at Elevated Pressures and Effects of Propene and Ethane as Additive: Experiment and Simulation

Sen

Kasper

Bergmann

et al. 2015

Zeitschrift Für Physikalische Chemie

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Partial homogeneous oxidation of methane (CH 4 ) within stationary engines may be one concept for conversion of available energy to alternatively mechanical energy, heat, and additional useful chemicals like syngas (CO/H 2 ), formaldehyde (CH 2 O), methanol (CH 3 OH) or hydrocarbons (e.g. C 2 H 4 ). The present study investigates the formation reactions of chemicals experimentally and theoretically. Methane oxidation is studied under fuel-rich conditions ( = 17.50-22.25) at high pressures (6 bar) and high temperatures ( max = 1030 K) for long residence times in a tubular reactor. The gas composition is determined experimentally by time-of-flight mass spectrometry for different reactor temperatures. Through variation of reactor temperature an overview of the maximum mole fractions of target chemicals, the temperature of observed reaction onset, and the optimal temperature to increase target yields can be determined. The experimental results are compared to kinetic simulations of the methane conversion using literature mechanisms to assess how well the data are reproduced for these uncommon reaction conditions. The potential of activating the conversion reactions with ethane (C 2 H 6 ) and propene (C 3 H 6 ) as additives is investigated. Methanol is chosen as one target compound. Its yield is increased by both additives. In addition, propene as additive reduces the temperature of reaction onset in the experiments and in the simulation. CH 2 O and C 2 H 4 can be identified as other useful chemicals produced in the experiments and the influence of the additives on the yields is discussed.

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Partial oxidation of methane to methanol in a flow reactor at elevated pressure

Cited by 56 publications

References 10 publications

Sensitizing effects of NOx on CH4 oxidation at high pressure

Sensitizing effects of NOx on CH4 oxidation at high pressure

Experimental measurements and kinetic modeling of CH₄/O₂ and CH₄/C₂H₆/O₂ conversion at high pressure

Partial Oxidation of Methane at Elevated Pressures and Effects of Propene and Ethane as Additive: Experiment and Simulation

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Partial oxidation of methane to methanol in a flow reactor at elevated pressure

Cited by 56 publications

References 10 publications

Sensitizing effects of NOx on CH4 oxidation at high pressure

Sensitizing effects of NOx on CH4 oxidation at high pressure

Experimental measurements and kinetic modeling of CH4/O2 and CH4/C2H6/O2 conversion at high pressure

Partial Oxidation of Methane at Elevated Pressures and Effects of Propene and Ethane as Additive: Experiment and Simulation

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Experimental measurements and kinetic modeling of CH₄/O₂ and CH₄/C₂H₆/O₂ conversion at high pressure