Surface-area Measurements on Metal Spheres and on Carbon Blacks.

Emmett, P. H.; Cines, M. R.

doi:10.1021/j150456a007

Cited by 13 publications

(4 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Harkins-Jura plots for argon and oxygen are curves convex to the axes (figure 4). Further experiments on other systems would be required to determine whether this shape of Harkins-Jura plot can be correlated with a low value of c. Davis and DeWitt (5) found such curves for butane on glass where c had values from 5 to 11, whereas Emmett and Cines (11) found straight lines for nitrogen on carbon blacks where c had values of 127 and 665. Hill (19) has shown that, on the basis of the B.E.T.…”

Section: Discussionmentioning

confidence: 99%

The Adsorption of Nitrogen, Argon, and Oxygen on Potassium Chloride at 78–90°K.

Keenan¹,

Holmes²

1949

J. Phys. Chem.

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

The Adsorption of Nitrogen, Argon, and Oxygen on Potassium Chloride at 78–90°K.

Keenan¹,

Holmes²

1949

J. Phys. Chem.

View full text Add to dashboard Cite

“…surface area measurements and has been discussed by Emmett 11 and by Emmett and Cines.1' 7 he effect is particularly noted in adsorbents believed to have small pores,I1 but may be substantial even with adsorbents believed to be non-porous. 12…”

Section: Methodsmentioning

confidence: 99%

Gas chromatographic measurement of gas-solid interaction potentials and solid surface areas

Hansen¹,

Murphy²,

McGee³

1964

Trans. Faraday Soc.

View full text Add to dashboard Cite

Gas adsorption retention chromatographic volumes at high temperature are closely related to adsorption and are therefore sources of information concerning gas-solid interaction potentials and surface areas. Dependence of ietention volumes on temperature over the temperature range 300-700°K has been established for argon, nitrogen, carbon monoxide, methane, ethylene, ethane, propylene and propane on Columbia activated carbon. A simple method based on an asymptotic form is presented for evaluation of gas-solid interaction potential parameters. Over the temperature ranges investigated, data are adequately represented in each case by a 3 : 9 gas-solid interaction potential, but this representation is not unique. Interaction parameters TO = -E ( x o ) / ~ and Ax0 ( A is the surface area, xo the distance from surface to potential energy minimum, and E(XO) is the gas-solid interaction energy at the potential energy minimum) are evaluated by both asymptotic and exact methods, results by the two methods being in excellent agreement. The estimation of the parameter xo is discussed. Surface areas based on measured values of Ax0 and estimated values of xo are less than the B.E.T. nitrogen surface area of the adsorbent by factors varying from 2.5 for argon to 6.7 for propylene.

show abstract

“…The results of δ and comparative γ methods in the case of the adsorption of benzene vapors on carbon adsorbents were analyzed in [94,95]. As was found in [94], the arrangement of С 6 Н 6 molecules in a mono layer is predominantly planar due to the high adsorp tion energy and the determined ω = 0.40 nm 2 is larger mi 0 a [81] and (2,4,6) adsorption of C 6 H 6 (308 K) on NaCl [82].…”

Section: Equation Of Multilayer Adsorption On Energetically Heterogenmentioning

confidence: 99%

Description of polymolecular adsorption on energetically heterogeneous surfaces

Петухова

Gur’yanov

2012

Prot Met Phys Chem Surf

View full text Add to dashboard Cite

The Dubinin-Radushkevich equation is used for description of the first and subsequent adsorp tion layers in the case of polymolecular adsorption on energetically heterogeneous surfaces. It is found pos sible to predict adsorption isotherms of various vapors on nonporous and macroporous adsorbents on the basis of the minimal scope of experimental data. The derived two parameter equation of multilayer adsorp tion describes the adsorption equilibria in almost the whole range of mono and polymolecular adsorption, which is not complicated by capillary condensation, specific adsorption, or adsorption in micropores. When there are micropores and specific interactions between the adsorbate and the surface, the equation in the polymolecular range (beyond point B) enables one to characterize the surface and porosity of the adsorbent with respect to diverse adsorbates without information about standard adsorption isotherms, which makes the applicability field of the adsorption methods much broader and more valuable.

show abstract

Surface-area Measurements on Metal Spheres and on Carbon Blacks.

Cited by 13 publications

References 11 publications

The Adsorption of Nitrogen, Argon, and Oxygen on Potassium Chloride at 78–90°K.

The Adsorption of Nitrogen, Argon, and Oxygen on Potassium Chloride at 78–90°K.

Gas chromatographic measurement of gas-solid interaction potentials and solid surface areas

Description of polymolecular adsorption on energetically heterogeneous surfaces

Contact Info

Product

Resources

About