Modelling Of The Interaction Of Nitrogen Dioxide With Activated Carbon I. Adsorption Dynamics At The Single Particle Scale

Gray P.G. and Do D.D. (1992) Modelling Of The Interaction Of Nitrogen Dioxide With Activated Carbon I. Adsorption Dynamics At The Single Particle Scale. Chemical Engineering Communications, 117 1: 219-240. doi:10.1080/00986449208936068


Author Gray P.G.
Do D.D.
Title Modelling Of The Interaction Of Nitrogen Dioxide With Activated Carbon I. Adsorption Dynamics At The Single Particle Scale
Journal name Chemical Engineering Communications   Check publisher's open access policy
ISSN 1563-5201
Publication date 1992
Sub-type Article (original research)
DOI 10.1080/00986449208936068
Volume 117
Issue 1
Start page 219
End page 240
Total pages 22
Subject 1500 Chemical Engineering
1600 Chemistry
Abstract The adsorption dynamics of nitrogen dioxide on activated carbon are measured using a microbalance technique. A theoretical model, incorporating the mechanisms of micropore, macropore and concentration dependent sorbed phase (surface) diffusion, with nonlinear equilibrium (dual Langmuir isotherm), is fitted to the experimental NO2adsorption dynamics over a range of temperatures, concentrations and particles sizes. The data are well fitted by the model over the temperature range 298–373 K, with typical extracted values of the diffusivities at 298 K being; μ/R2= 0.003 s_1(micropore), Dp = 0.038 cm2/s (macropore) and Dso 1.0 x 10_6cm2/s (surface); with micropore and surface diffusion activation energies of 14.8 and ll.0.k1/mole, respectively. The influence of the NO2/N2O 4ratio on the adsorption dynamics is also discussed. At temperature higher than 373 K, significant reaction of NQ2with activated carbon results in consumption of the carbon.
Keyword dependent surface diffusion
Macropore
Micropore and concentration
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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