Determination of low surface areas by the continuous flow method

Lowell, S.; Karp, Stewart

doi:10.1021/ac60317a028

Cited by 18 publications

(9 citation statements)

References 4 publications

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“…Lowell and Karp [143] measured the effect of thermal diffusion on surface areas using the continuous flow method. Fig: 16.14 illustrates a fully developed anomalous desorption signal caused by thermal diffusion.…”

Section: Low Surface Area Measurementsmentioning

confidence: 99%

Powder Surface Area and Porosity

Lowell¹,

Shields

1991

562

370

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Section: Low Surface Area Measurementsmentioning

confidence: 99%

Powder Surface Area and Porosity

Lowell¹,

Shields

1991

562

370

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“…Surface areas as low as 0.01 m 2 have been accurately evaluated with this U-cell. More details on the performances of the "micro cell" are available in Lowell and Karp (1972).…”

mentioning

confidence: 99%

Structural studies in limestone sulfidation

Fenouil¹

1993

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“…For the adsorption and desorption peaks, small initial peaks appeared. According to Kourilova et al [19] and Lowell et al [20], they result from thermal diffusion. The thermal diffusion makes the adsorption and desorption peak separated when the gas mixture is exposed to changing temperature gradient.…”

Section: Resultsmentioning

confidence: 99%

Adsorption phenomena of a mechanically-alloyed mixture 2Mg+Ni

Song

Ahn

Park

1997

Metals and Materials

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The nitrogen adsorption phenomena of a mechanically-alloyed mixture were studied after activation. The specific surface area of the activated mixture was 2.72 m~'g -t. The adsorption and desorption isotherms of the activated mixture were obtained. The adsorption isotherm was similar to type II among the five types of isotherms classified by BDDT. Its hysteresis curve had a form of type B among the de Boer's five types of hysteresis. Desorption pore-size analysis showed that the activated mixture had only a few mesopores whose diameters were 20-80/~ around. The shapes of adsorption isotherm and hysteresis curve, the desorption pore-size distribution analysis and SEM micrographs showed that, the particles of the activated mixture were nonporous and they had only a few mesopores. The average adsorption rates of the activated mixture showed a first-order dependence on the nitrogen pressure at 77 K.

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Determination of low surface areas by the continuous flow method

Cited by 18 publications

References 4 publications

Powder Surface Area and Porosity

Powder Surface Area and Porosity

Structural studies in limestone sulfidation

Adsorption phenomena of a mechanically-alloyed mixture 2Mg+Ni

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