Kinetics of sorption in deactivated zeolite crystal adsorbents

Ifadat Ali Khan; Kevin F. Loughlin

doi:10.1016/S0098-1354(02)00259-4

Kinetics of sorption in deactivated zeolite crystal adsorbents

Ifadat Ali Khan
, Kevin F. Loughlin^*

^*Corresponding author for this work

King Fahd University of Petroleum & Minerals

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

8 Scopus citations

Abstract

Dehydration adsorbents deactivate with time due to either pore mouth closure, window blocking, coking and/or hydrothermal decrystallization. These mechanisms of deactivation may be significant under severe hydrothermal conditions and/or in presence of reactive hydrocarbons at elevated temperatures and/or pressures. A mathematical model for predicting the uptake rates for crystal particles partially blocked either due to coking or pore mouth closure has been developed and numerical results, using the orthogonal collocation technique, have been obtained. Concentrated blockage of the crystal surface greatly reduces the mass transfer rate in comparison to uniformly distributed surface blockage.

Original language	English
Pages (from-to)	689-696
Number of pages	8
Journal	Computers and Chemical Engineering
Volume	27
Issue number	5
DOIs	https://doi.org/10.1016/S0098-1354(02)00259-4
State	Published - 15 May 2003

Bibliographical note

Funding Information:
The authors would like to acknowledge an anonymous referee for the comments provided on the source of the Jacobi polynomials. The authors also acknowledge King Fahd University of Petroleum & Minerals for the financial support provided for this work.

Keywords

Adsorbents
Deactivation
Kinetics
Sorption
Zeolites

ASJC Scopus subject areas

General Chemical Engineering
Computer Science Applications

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10.1016/S0098-1354(02)00259-4

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title = "Kinetics of sorption in deactivated zeolite crystal adsorbents",

abstract = "Dehydration adsorbents deactivate with time due to either pore mouth closure, window blocking, coking and/or hydrothermal decrystallization. These mechanisms of deactivation may be significant under severe hydrothermal conditions and/or in presence of reactive hydrocarbons at elevated temperatures and/or pressures. A mathematical model for predicting the uptake rates for crystal particles partially blocked either due to coking or pore mouth closure has been developed and numerical results, using the orthogonal collocation technique, have been obtained. Concentrated blockage of the crystal surface greatly reduces the mass transfer rate in comparison to uniformly distributed surface blockage.",

keywords = "Adsorbents, Deactivation, Kinetics, Sorption, Zeolites",

author = "Khan, \{Ifadat Ali\} and Loughlin, \{Kevin F.\}",

note = "Funding Information: The authors would like to acknowledge an anonymous referee for the comments provided on the source of the Jacobi polynomials. The authors also acknowledge King Fahd University of Petroleum \& Minerals for the financial support provided for this work. ",

year = "2003",

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doi = "10.1016/S0098-1354(02)00259-4",

language = "English",

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pages = "689--696",

journal = "Computers and Chemical Engineering",

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T1 - Kinetics of sorption in deactivated zeolite crystal adsorbents

AU - Khan, Ifadat Ali

AU - Loughlin, Kevin F.

N1 - Funding Information: The authors would like to acknowledge an anonymous referee for the comments provided on the source of the Jacobi polynomials. The authors also acknowledge King Fahd University of Petroleum & Minerals for the financial support provided for this work.

PY - 2003/5/15

Y1 - 2003/5/15

N2 - Dehydration adsorbents deactivate with time due to either pore mouth closure, window blocking, coking and/or hydrothermal decrystallization. These mechanisms of deactivation may be significant under severe hydrothermal conditions and/or in presence of reactive hydrocarbons at elevated temperatures and/or pressures. A mathematical model for predicting the uptake rates for crystal particles partially blocked either due to coking or pore mouth closure has been developed and numerical results, using the orthogonal collocation technique, have been obtained. Concentrated blockage of the crystal surface greatly reduces the mass transfer rate in comparison to uniformly distributed surface blockage.

AB - Dehydration adsorbents deactivate with time due to either pore mouth closure, window blocking, coking and/or hydrothermal decrystallization. These mechanisms of deactivation may be significant under severe hydrothermal conditions and/or in presence of reactive hydrocarbons at elevated temperatures and/or pressures. A mathematical model for predicting the uptake rates for crystal particles partially blocked either due to coking or pore mouth closure has been developed and numerical results, using the orthogonal collocation technique, have been obtained. Concentrated blockage of the crystal surface greatly reduces the mass transfer rate in comparison to uniformly distributed surface blockage.

KW - Adsorbents

KW - Deactivation

KW - Kinetics

KW - Sorption

KW - Zeolites

UR - https://www.scopus.com/pages/publications/0037447824

U2 - 10.1016/S0098-1354(02)00259-4

DO - 10.1016/S0098-1354(02)00259-4

M3 - Article

AN - SCOPUS:0037447824

SN - 0098-1354

VL - 27

SP - 689

EP - 696

JO - Computers and Chemical Engineering

JF - Computers and Chemical Engineering

IS - 5

ER -

Kinetics of sorption in deactivated zeolite crystal adsorbents

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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