Physical adsorption of gases on Pyrex glass. Evidence for superactivity

J. R.H. Ross; M. W. Roberts

doi:10.1016/0021-9517(65)90168-5

Physical adsorption of gases on Pyrex glass. Evidence for superactivity

J. R.H. Ross, M. W. Roberts

Queen's University Belfast

Research output: Contribution to journal › Article › peer-review

Abstract

Pyrex glass has been shown to be capable of developing during use a superactivity for the physical adsorption of the gases Xe, Kr, N₂, and O₂ at -195 °C. This superactivity has been analyzed by applying the BET equation to the adsorption isotherms of krypton and xenon and has been shown to be comparable to the activity of some metal films in physical adsorption. The possible reason for and the significance of this superactivity in both adsorption measurements and the determination of the cross-sectional areas of adsorbed molecules are discussed briefly. The surface coverage of oxygen on Pyrex glass at 10^-3 mm pressure and -195 °C was about 10% of the xenon monolayer; this is in good agreement with Hobson's nitrogen data. The superactive glass was about 15 times more active under the same conditions.

Original language	English
Pages (from-to)	620-624
Number of pages	5
Journal	Journal of Catalysis
Volume	4
Issue number	5
DOIs	https://doi.org/10.1016/0021-9517(65)90168-5
Publication status	Published - Oct 1965
Externally published	Yes

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10.1016/0021-9517(65)90168-5

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title = "Physical adsorption of gases on Pyrex glass. Evidence for superactivity",

abstract = "Pyrex glass has been shown to be capable of developing during use a superactivity for the physical adsorption of the gases Xe, Kr, N2, and O2 at -195 °C. This superactivity has been analyzed by applying the BET equation to the adsorption isotherms of krypton and xenon and has been shown to be comparable to the activity of some metal films in physical adsorption. The possible reason for and the significance of this superactivity in both adsorption measurements and the determination of the cross-sectional areas of adsorbed molecules are discussed briefly. The surface coverage of oxygen on Pyrex glass at 10-3 mm pressure and -195 °C was about 10% of the xenon monolayer; this is in good agreement with Hobson's nitrogen data. The superactive glass was about 15 times more active under the same conditions.",

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year = "1965",

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doi = "10.1016/0021-9517(65)90168-5",

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T1 - Physical adsorption of gases on Pyrex glass. Evidence for superactivity

AU - Ross, J. R.H.

AU - Roberts, M. W.

PY - 1965/10

Y1 - 1965/10

N2 - Pyrex glass has been shown to be capable of developing during use a superactivity for the physical adsorption of the gases Xe, Kr, N2, and O2 at -195 °C. This superactivity has been analyzed by applying the BET equation to the adsorption isotherms of krypton and xenon and has been shown to be comparable to the activity of some metal films in physical adsorption. The possible reason for and the significance of this superactivity in both adsorption measurements and the determination of the cross-sectional areas of adsorbed molecules are discussed briefly. The surface coverage of oxygen on Pyrex glass at 10-3 mm pressure and -195 °C was about 10% of the xenon monolayer; this is in good agreement with Hobson's nitrogen data. The superactive glass was about 15 times more active under the same conditions.

AB - Pyrex glass has been shown to be capable of developing during use a superactivity for the physical adsorption of the gases Xe, Kr, N2, and O2 at -195 °C. This superactivity has been analyzed by applying the BET equation to the adsorption isotherms of krypton and xenon and has been shown to be comparable to the activity of some metal films in physical adsorption. The possible reason for and the significance of this superactivity in both adsorption measurements and the determination of the cross-sectional areas of adsorbed molecules are discussed briefly. The surface coverage of oxygen on Pyrex glass at 10-3 mm pressure and -195 °C was about 10% of the xenon monolayer; this is in good agreement with Hobson's nitrogen data. The superactive glass was about 15 times more active under the same conditions.

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DO - 10.1016/0021-9517(65)90168-5

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VL - 4

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JO - Journal of Catalysis

JF - Journal of Catalysis

IS - 5

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Physical adsorption of gases on Pyrex glass. Evidence for superactivity

Abstract

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