On the applicability of the nucleation model for oxidation of carbons

McCarthy, David

doi:10.1016/0008-6223(93)90156-5

Carbon

1993

DOI: 10.1016/0008-6223(93)90156-5

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On the applicability of the nucleation model for oxidation of carbons

David McCarthy

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Cited by 2 publications

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Linear Driving Force Approximations as Predictive Models for Reactive Sorption

Azzam

Simonetti

2019

Energy Tech

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Herein, the utilization of linear driving‐force approximations as predictive models for hydrogen sulfide removal on a commercial copper‐based sorbent is assessed. Sorption experiments are carried out in a fixed‐bed reactor at different flow conditions, temperatures, total pressures, and inlet hydrogen sulfide concentrations. For large pellet sizes (≥800 μm), quasi‐chemical linear driving‐force approximations, that are first order in both bulk gas‐phase concentration and solid‐phase capacity, effectively model contaminant breakthrough curves. Experimentally determined rate parameters (10.7 ± 0.7 s−1 and 6.5 ± 0.5 s−1 for 800 and 1000 μm‐sized particles, respectively) reflect those determined from pore diffusion within pellets. For small pellet sizes (≤212 μm), linear driving‐force approximations, that are zero order in bulk gas‐phase concentration but first order in solid‐phase capacity, model contaminant breakthrough curves; and rate parameters reflect reaction and diffusion at reactive interfaces rather than bulk or pore diffusion. These studies demonstrate that linear driving‐force approximations can model experimentally determined trace hydrogen sulfide removal parameters. Alternatively, under conditions where bulk and/or pore diffusions are limiting, the rate parameters can be calculated from known engineering theories (e.g., the Chapman–Enskog relation or the Wilke–Chang correlation).

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Linear Driving Force Approximations as Predictive Models for Reactive Sorption

Azzam

Simonetti

2019

Energy Tech

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Finite element solution for gas–solid reactions: Application to the moving boundary problems

Ebrahimi

Ebrahim

Hatam

et al. 2008

Chemical Engineering Journal

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On the applicability of the nucleation model for oxidation of carbons

Cited by 2 publications

References 13 publications

Linear Driving Force Approximations as Predictive Models for Reactive Sorption

Linear Driving Force Approximations as Predictive Models for Reactive Sorption

Finite element solution for gas–solid reactions: Application to the moving boundary problems

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