A Comparative Chromatographic Study of Liquid Adsorption and Diffusion in Microporous and Macroporous Adsorbents

Yue Sheng Lin; Yi Hua Ma

doi:10.1021/ie00089a020

A Comparative Chromatographic Study of Liquid Adsorption and Diffusion in Microporous and Macroporous Adsorbents

Yue Sheng Lin, Yi Hua Ma

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

29 Scopus citations

Abstract

Mathematical analysis is presented for mass transfer in liquid chromatographic columns packed with microporous and macroporous adsorbents using a pore diffusion model and a pore diffusion and adsorption model. The numerical solutions and moment equations show that the two models are mathematically identical, but with different values for the adsorption equilibrium constant, K_e, and the effective intraparticle diffusivity, D_e. The experimental results on D_e for liquids in silicalite crystals (micropores) and an activated alumina (macropores), however, suggest that the pore diffusion model is appropriate for microporous adsorbents, and the pore diffusion and adsorption model is suited for macroporous adsorbents. Experimental results also show that values of D_e for liquids are of a similar order as those for gases in silicalite and are about 3 orders of magnitude smaller than those for gases in the alumina.

Original language	English (US)
Pages (from-to)	622-630
Number of pages	9
Journal	Industrial and Engineering Chemistry Research
Volume	28
Issue number	5
DOIs	https://doi.org/10.1021/ie00089a020
State	Published - May 1 1989
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

Access to Document

10.1021/ie00089a020

Cite this

@article{90beafffa3cd4efabf16578966ee0dde,

title = "A Comparative Chromatographic Study of Liquid Adsorption and Diffusion in Microporous and Macroporous Adsorbents",

abstract = "Mathematical analysis is presented for mass transfer in liquid chromatographic columns packed with microporous and macroporous adsorbents using a pore diffusion model and a pore diffusion and adsorption model. The numerical solutions and moment equations show that the two models are mathematically identical, but with different values for the adsorption equilibrium constant, Ke, and the effective intraparticle diffusivity, De. The experimental results on De for liquids in silicalite crystals (micropores) and an activated alumina (macropores), however, suggest that the pore diffusion model is appropriate for microporous adsorbents, and the pore diffusion and adsorption model is suited for macroporous adsorbents. Experimental results also show that values of De for liquids are of a similar order as those for gases in silicalite and are about 3 orders of magnitude smaller than those for gases in the alumina.",

author = "Lin, {Yue Sheng} and Ma, {Yi Hua}",

year = "1989",

month = may,

day = "1",

doi = "10.1021/ie00089a020",

language = "English (US)",

volume = "28",

pages = "622--630",

journal = "Industrial and Engineering Chemistry Research",

issn = "0888-5885",

publisher = "American Chemical Society",

number = "5",

}

TY - JOUR

T1 - A Comparative Chromatographic Study of Liquid Adsorption and Diffusion in Microporous and Macroporous Adsorbents

AU - Lin, Yue Sheng

AU - Ma, Yi Hua

PY - 1989/5/1

Y1 - 1989/5/1

N2 - Mathematical analysis is presented for mass transfer in liquid chromatographic columns packed with microporous and macroporous adsorbents using a pore diffusion model and a pore diffusion and adsorption model. The numerical solutions and moment equations show that the two models are mathematically identical, but with different values for the adsorption equilibrium constant, Ke, and the effective intraparticle diffusivity, De. The experimental results on De for liquids in silicalite crystals (micropores) and an activated alumina (macropores), however, suggest that the pore diffusion model is appropriate for microporous adsorbents, and the pore diffusion and adsorption model is suited for macroporous adsorbents. Experimental results also show that values of De for liquids are of a similar order as those for gases in silicalite and are about 3 orders of magnitude smaller than those for gases in the alumina.

AB - Mathematical analysis is presented for mass transfer in liquid chromatographic columns packed with microporous and macroporous adsorbents using a pore diffusion model and a pore diffusion and adsorption model. The numerical solutions and moment equations show that the two models are mathematically identical, but with different values for the adsorption equilibrium constant, Ke, and the effective intraparticle diffusivity, De. The experimental results on De for liquids in silicalite crystals (micropores) and an activated alumina (macropores), however, suggest that the pore diffusion model is appropriate for microporous adsorbents, and the pore diffusion and adsorption model is suited for macroporous adsorbents. Experimental results also show that values of De for liquids are of a similar order as those for gases in silicalite and are about 3 orders of magnitude smaller than those for gases in the alumina.

UR - http://www.scopus.com/inward/record.url?scp=0024656201&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024656201&partnerID=8YFLogxK

U2 - 10.1021/ie00089a020

DO - 10.1021/ie00089a020

M3 - Article

AN - SCOPUS:0024656201

SN - 0888-5885

VL - 28

SP - 622

EP - 630

JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

IS - 5

ER -

A Comparative Chromatographic Study of Liquid Adsorption and Diffusion in Microporous and Macroporous Adsorbents

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this