Modelling of one-dimensional heterogeneous catalytic steam methane reforming over various catalysts in an adiabatic packed bed reactor

Maqbool, Fahad; Abbas, Syed Zaheer; Ramirez-Solis, Sergio; Dupont, Valerie; Mahmud, Tariq

doi:10.1016/j.ijhydene.2020.11.071

Cited by 25 publications

(14 citation statements)

References 99 publications

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“…This study was performed for an N 2 :O 2 mixture of 80:20 at an N 2 dissociation fraction of 3.5 × 10 –3 , for which our model can reproduce the experimental NO concentration at the reactor outlet. An O 2 fraction of 20% was chosen, as the catalytic effect is still pronounced enough at this condition (comparing 2.2 × 10 –4 mol m –3 (3200 ppm) and 5.7 × 10 –4 mol m –3 (8250 ppm) for plasma only and plasma-catalytic processes in the experiments of Ma et al, respectively). Additionally, this feed gas mixture mimics dry air composition, and is therefore of special interest for industrial purposes.…”

Section: Resultsmentioning

confidence: 99%

“…This kind of model has been used before in the field of thermal catalysis, and its robustness in simulation and optimization of various catalytic processes was already demonstrated. ,,− However, in this paper, for the first time, we developed such a model for the simulation of a plasma-catalytic process for NO production. Our modeling approach can provide useful insights into the underlying mechanisms responsible for NO production, as a function of time and at different positions across the catalyst bed.…”

Section: Discussionmentioning

confidence: 99%

“…The governing equations can be derived from the mass, energy and momentum balances on a slice of infinitesimal thickness d z (as depicted in Figure ) during an infinitesimal time d t . , …”

Section: Model Descriptionmentioning

confidence: 99%

“…ADMs, which account for back-mixing and molecular diffusion in the axial direction, are very robust for modeling fixed bed catalytic reactors and have been widely used for investigation of various catalytic processes. − In the present work, for the first time, we developed such a model for postplasma catalytic production of NO. Compared to CSTR models, as studied by Ma et al, this modeling approach is more complicated.…”

Section: Introductionmentioning

confidence: 99%

“…The governing equations can be derived from the mass, energy and momentum balances on a slice of infinitesimal thickness dz (as depicted in Figure 2) during an infinitesimal time dt. 21,22 In the following, we describe the mass and energy balance in the gas and solid phase in the catalytic bed, respectively, as well as the Ergun equation for the pressure drop across the catalyst bed, which accounts for the momentum transfer.…”

Section: ■ Introductionmentioning

confidence: 99%

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Postplasma Catalytic Model for NO Production: Revealing the Underlying Mechanisms to Improve the Process Efficiency

Eshtehardi

Veer

Delplancke

et al. 2023

ACS Sustainable Chem. Eng.

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Plasma catalysis is emerging for plasma-assisted gas conversion processes. However, the underlying mechanisms of plasma catalysis are poorly understood. In this work, we present a 1D heterogeneous catalysis model with axial dispersion (i.e., accounting for back-mixing and molecular diffusion of fluid elements in the process stream in the axial direction), for plasma-catalytic NO production from N 2 /O 2 mixtures. We investigate the concentration and reaction rates of each species formed as a function of time and position across the catalyst, in order to determine the underlying mechanisms. To obtain insights into how the performance of the process can be further improved, we also study how changes in the postplasma gas flow composition entering the catalyst bed and in the operation conditions of the catalytic stage affect the performance of NO production.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…The governing equations can be derived from the mass, energy and momentum balances on a slice of infinitesimal thickness d z (as depicted in Figure ) during an infinitesimal time d t . , …”

Section: Model Descriptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Postplasma Catalytic Model for NO Production: Revealing the Underlying Mechanisms to Improve the Process Efficiency

Eshtehardi

Veer

Delplancke

et al. 2023

ACS Sustainable Chem. Eng.

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Effect of Co2 Content on Biogas-to-Syngas Conversion for Methanol Production

Shorokhov,

Olabin,

Klevs

et al. 2023

Theor Exp Chem

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Optimization of nickel catalyst loading in Ni/γAl2O3 for producing carbon nanotubes through natural gas decomposition

2023

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Carbon nanotubes can be produced at high quality through hydrocarbon catalytic decomposition. In addition, hydrogen can be produced as a valuable byproduct at a competitive price. In this article, the loading of the active phase in the decomposition catalyst is optimized using natural gas as a widely available hydrocarbon. Natural gas decomposition was investigated using different nickel loadings. Natural gas decomposition, as a widely available hydrocarbon, is investigated by manipulating nickel loading to optimize the loading of the active phase in the decomposition catalyst.Optimizing the catalyst loading can achieve higher quality and yield of carbon nanotube. In addition, a higher carbon nanotube yield will maximize hydrogen production. Increasing the quality of produced carbon and the amount of hydrogen will improve the overall process economics. Nickel is a highly active catalyst for natural gas decomposition and has a higher carbon affinity compared to other metallic catalysts. Different nickel loadings were tested for natural gas decomposition. Optimization was used to calculate the optimum nickel loading based on the experimental results. The optimum nickel loading over alumina was 12.5%. The economic analysis of the process indicated that the optimum nickel loading is 30%.

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Modelling of one-dimensional heterogeneous catalytic steam methane reforming over various catalysts in an adiabatic packed bed reactor

Cited by 25 publications

References 99 publications

Postplasma Catalytic Model for NO Production: Revealing the Underlying Mechanisms to Improve the Process Efficiency

Postplasma Catalytic Model for NO Production: Revealing the Underlying Mechanisms to Improve the Process Efficiency

Effect of Co2 Content on Biogas-to-Syngas Conversion for Methanol Production

Optimization of nickel catalyst loading in Ni/γAl2O3 for producing carbon nanotubes through natural gas decomposition

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