A New Series of Equations for the Adsorption Isotherm Curves on Microporous Adsorbents

Aharoni, Chaim; Romm, Freddy

doi:10.1021/la00005a052

Cited by 9 publications

(12 citation statements)

References 4 publications

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“…In previous studies (Aharoni and Romm 1995;Romm 1996;Rodriguez-Reinoso and Molina-Sabio 1992;Caturla et al 1991) it was shown that:…”

Section: Deduction Of the Activation Energy Formulamentioning

confidence: 91%

“…On the basis of the above reactions, the activation process must involve the consumption of carbonaceous material and lead to the production of gases (such as H 2 , CO, CO 2 and H 2 O) when potassium hydroxide is employed. Romm and co-workers (Aharoni and Romm 1995;Romm 1996) have described the mechanism of micropore formation in carbonaceous materials by physical activation through the use of a nonsteady-state approximation. The mechanism of micropore formation in carbonaceous materials in the presence of potassium hydroxide may be described using a macroscopic method as follows:…”

Section: Theory the Mechanism Of Micropore Formation In Carbonaceous mentioning

confidence: 99%

“…They were originally developed by the Amoco Corporation (Wennerberg and O'Grady 1978;Marsh and Crawford 1984) and produced on a commercial basis by the Anderson Development Company (O'Grady and Wennerberg 1986). Such materials have been employed in various applications such as hydrogen gas and natural gas storage systems (Patrick 1995;Chahine and Bose 1994;Amankwal and Schwarz 1993), electrical double layer capacitors (Nishino 1988) and catalyst supports (Grunewald and Drago 1990;Rondon and Williams 1995). *Author to whom all correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

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The Kinetic Parameters of Carbonaceous Materials Activated with Potassium Hydroxide

Zou

Han

2000

Adsorption Science & Technology

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On the basis of micropore formation in carbonaceous materials, the activation energy for the potassium hydroxide activation of Chinese petroleum coke and coal has been deduced theoretically as dB0/dt = A exp(–Ea∈/RT), where ∈ is the formation energy for the metastable solid formed at the activation temperature. The kinetic parameters (frequency factor, A, and apparent activation energy, Ea) were calculated from this equation as being 5.319 mg/(g min), 36.51 kJ/mol and 6.64 mg/(g min), 49.46 kJ/mol, respectively, for the two carbonaceous materials studied.

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“…In previous studies (Aharoni and Romm 1995;Romm 1996;Rodriguez-Reinoso and Molina-Sabio 1992;Caturla et al 1991) it was shown that:…”

Section: Deduction Of the Activation Energy Formulamentioning

confidence: 91%

Section: Theory the Mechanism Of Micropore Formation In Carbonaceous mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Kinetic Parameters of Carbonaceous Materials Activated with Potassium Hydroxide

Zou

Han

2000

Adsorption Science & Technology

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“…For building theoretical isotherms of adsorption, the evaluation of the energy distribution of pores in the system is required . The method proposed above allows us to solve such a problem.…”

Section: Energy Distributionmentioning

confidence: 99%

“…Nevertheless, it is obvious that materials of different origins cannot possess the same internal structure. Hence, the application of Dubinin's approach either to gels or to carbons seems incorrect, at least, for one of these types of adsorbents and probably, even for both them …”

Section: Introductionmentioning

confidence: 99%

Derivation of the Equations for Isotherm Curves of Adsorption on Microporous Gel Materials

Romm

1996

Langmuir

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A new method of building isotherm curves for adsorption on silica and alumina gels, using the statistical polymer method, has been proposed. This method considers the chemisorption as the result of a chemical reaction between the adsorbent and the polymeric adsorbate, leading to the change of the weight distribution of multicomponent polymers, that is described directly by the equations of the multicomponent version of the statistical polymer method. The physisorption is considered as the formation of a weak complex between the adsorbent and the adsorbate inside micropores differing in the excess energy, that being described based on the micropores' energy distribution found by the statistical polymer method. The estimated relative square dispersion is in most cases on the level of some percents. A widespread paradoxnonzero adsorption at P → 0is explained as the result not of chemisorption but of physisorption processes: more concretely, of the discrete form of the energetic distribution of micropores.

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Cooperative model of the histidine and alanine adsorption on single-walled carbon nanotubes

Butyrskaya

Zapryagaev

Izmailova

2019

Carbon

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A New Series of Equations for the Adsorption Isotherm Curves on Microporous Adsorbents

Cited by 9 publications

References 4 publications

The Kinetic Parameters of Carbonaceous Materials Activated with Potassium Hydroxide

The Kinetic Parameters of Carbonaceous Materials Activated with Potassium Hydroxide

Derivation of the Equations for Isotherm Curves of Adsorption on Microporous Gel Materials

Cooperative model of the histidine and alanine adsorption on single-walled carbon nanotubes

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