Physical Adsorption of Gases at High Pressures: Argon and Methane onto Graphitized Carbon Black
作者:
J. Specovius,
G. H. Findenegg,
期刊:
Berichte der Bunsengesellschaft für physikalische Chemie
(WILEY Available online 1978)
卷期:
Volume 82,
issue 2
页码: 174-180
ISSN:0005-9021
年代: 1978
DOI:10.1002/bbpc.197800007
出版商: Wiley‐VCH Verlag GmbH&Co. KGaA
关键词: Adsorption;Gase;Hohe Drücke;Oberflächenerscheinungen
数据来源: WILEY
摘要:
AbstractA gravimetric method for the determination of surface excess isotherms of compressed gases on solid adsorbents is described. Buoyancy corrections are minimized by using a symmetric‐beam microbalance and by compensating the volume of the adsorbent. — Isotherms of argon and methane onto Graphon (a graphitized carbon black) are determined up to 150 bar at −20, 0, 25, and 50°C, corresponding to bulk densities up to the critical density for methane, and more than half the critical density for argon. Surface excess isotherms exhibit a maximum at about 0.4 to 0.5 of the critical density. The range of applicability of simple isotherm equations for higher gas pressures is discussed b
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