SIMULATION OF CHROMATOGRAPHIC RESPONSE IN COLUMNS PACKED WITH BIDISPERSE STRUCTURED PARTICLES

被引:36
作者
RAGHAVAN, NS [1 ]
RUTHVEN, DM [1 ]
机构
[1] UNIV NEW BRUNSWICK,DEPT CHEM ENGN,POB 4400,FREDERICTON E3B 5A3,NB,CANADA
关键词
ADSORPTION; -; Measurements; DIFFUSION;
D O I
10.1016/0009-2509(85)85022-3
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The coupled diffusion equations describing the response of a chromatographic column, packed with a bi-porous adsorbent such as a pelleted molecular sieve have been solved numerically by the method of orthogonal collocation. The solution provides a good representation of the experimental chromatograms for Ar in columns packed with 5A and 10X molecular sieve pellets. The adequacy of the linear driving force rate expression as a simplified representation of the dynamic behavior is investigated and it is shown that the simplified model provides an excellent approximation for a long column but breaks down when the column contains less than about twenty theoretical plates. The practical implications of this observation are briefly considered.
引用
收藏
页码:699 / 706
页数:8
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