Dynamic adsorption of vapours by activated carbons and by polymer-derived adsorbents: 1. Adsorption at 0% RH

被引:7
作者
Karpowicz, F
Hearn, J
Wilkinson, MC
机构
[1] Nottingham Trent Univ, Dept Chem & Phys, Nottingham NG11 8NS, England
[2] Oak Apple House, Salisbury SP2 0PA, Wilts, England
来源
ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY | 2000年 / 6卷 / 04期
关键词
adsorbents; processes and applications;
D O I
10.1023/A:1026565016330
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The uptakes of volatile organic compounds from a nitrogen carrier gas at 0% R.H. onto packed beds of adsorbents have been measured by monitoring the effluent vapour concentration profile as a function of time. The profiles have been quantitatively fitted by a modified Bohart-Adams equation which was then integrated to yield the adsorbent capacities. Traditional activated carbons, carbonised macroreticular resins and a macroreticular polymer were used in the study. Performance in the dynamic tests has been related to the pore volume characteristics and surface areas determined from nitrogen adsorption isotherms. Whilst the extent of micropore filling basically increased as the sorbate boiling point increased and increased capacities reflected increased micropore volumes, these trends were interrupted by size exclusion and specific polar interaction effects.
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页码:337 / 347
页数:11
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