A Multilayer Model for Adsorption of Water on Activated Alumina in Relation to Adsorption Potential.

Kotoh, Kenji; Enoeda, Mikio; Matsui, Tetsuya; Nishikawa, Masabumi

doi:10.1252/jcej.26.355

Cited by 20 publications

(24 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At higher partial pressures the pores are filled with liquid by capillary condensation. Kotoh et al (1993) presented a methodology to extend the adsorption potential theory to situations with more than one adsorption mechanism. It is based on a variation of the D-A equation with n = 1, which effectively reduces the D-A equation to the Freundlich isotherm equation.…”

Section: Theorymentioning

confidence: 99%

“…It is based on a variation of the D-A equation with n = 1, which effectively reduces the D-A equation to the Freundlich isotherm equation. In this study, we have used the approach of Kotoh et al (1993) and have postulated the following adsorption isotherm equation:…”

Section: Theorymentioning

confidence: 99%

“…Desai et al (1992) used a combined Langmuir/BET model to correlate adsorption equilibrium data for water vapor on several types of activated alumina. Kotoh et al (1993) developed a multilayer/multimechanism model for water adsorption on activated alumina that provided a very good fit to their experimental data.…”

Section: Introductionmentioning

confidence: 99%

“…The first one is the D-A equation. The second one is based on the methodology described by Kotoh et al (1993) and will be referred to as the dual mechanism adsorption potential (DMAP) equation. It is based on the adsorption potential theory and accounts explicitly for the different mechanisms by which water is held on activated alumina adsorbents.…”

Section: Introductionmentioning

confidence: 99%

“…The first equation is the well known Dubinin-Astakhov (D-A) equation. The second equation is obtained from a methodology proposed by Kotoh et al (1993). It is referred to as a dual mechanism adsorption potential (DMAP) equation because it is a linear combination of two D-A terms with n = 1 where each term accounts for a specific mechanism of water retention.…”

mentioning

confidence: 99%

See 4 more Smart Citations

Correlation of Adsorption Equilibrium Data for Water Vapor on F-200 Activated Alumina

Moore

Serbezov

2005

Adsorption

View full text Add to dashboard Cite

Single component adsorption equilibrium data for water vapor on commercially available activated alumina F-200 measured in a previous study (Serbezov, 2003) is correlated by two adsorption isotherm equations, both of which are based on the adsorption potential theory. The first equation is the well known Dubinin-Astakhov (D-A) equation. The second equation is obtained from a methodology proposed by Kotoh et al. (1993). It is referred to as a dual mechanism adsorption potential (DMAP) equation because it is a linear combination of two D-A terms with n = 1 where each term accounts for a specific mechanism of water retention. The D-A equation has two fitting parameters; the DMAP equation has three fitting parameters. The DMAP model provides a better fit for the adsorption data than the D-A model, while neither model describes the desorption data well. Analysis of the DMAP equation parameters shows that most of the water is retained by virtue of capillary condensation. In addition to fitting the experimental data, the heat of adsorption was calculated as function of the relative humidity and adsorbent loading. When capillary condensation is present, the heat of adsorption is only slightly higher than the latent heat of vaporization.

show abstract

Section: Theorymentioning

confidence: 99%

Section: Theorymentioning

confidence: 99%