Study on Sulfation of CeO2/γ-Al2O3 Sorbent in Simulated Flue Gas

Qingchun Yu; Shichao Zhang; Xindong Wang; Jie Zhang; Zhenming Lu

doi:10.1016/S1002-0721(07)60070-2

Study on Sulfation of CeO₂/γ-Al₂O₃ Sorbent in Simulated Flue Gas

Qingchun Yu
, Shichao Zhang^*
, Xindong Wang
, Jie Zhang
, Zhenming Lu

^*Corresponding author for this work

School of Materials Science and Engineering

University of Science and Technology Beijing
Tsinghua University

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

7 Scopus citations

Abstract

The sulfation of CeO₂/γ-Al₂O₃ sorbent in simulated flue gas was studied. A series of CeO₂/γ-Al₂O₃ sorbents with different CeO₂ loadings were prepared by impregnation and characterized by X-ray diffraction. Thermogravimetric technique was used to study the sulfation of CeO₂/γ-Al₂O₃ sorbents, mainly on the CeO₂ loading, sulfation cycles, and intrinsic kinetics. The study revealed that monolayer coverage of CeO₂ supported on γ-Al₂O₃ was 0.125 g CeO₂/g (γ-Al₂O₃). Below monolayer coverage, CeO₂ was highly dispersed on γ-Al₂O₃. The optimal CeO₂ loading on sulfation was 0.03 g CeO₂/g (γ-Al₂O₃). CeO₂/γ-Al₂O₃ sorbent was recyclable by controlling sulfation time. Intrinsic kineticd equation was R = 1.1394 × 10^-4 × exp (-1,508.39/T) mg·mg^-1·s^-1. Activation energy and reaction order were 12.54 kJ·mol^-1 and first order, respectively.

Original language	English
Pages (from-to)	184-188
Number of pages	5
Journal	Journal of Rare Earths
Volume	25
Issue number	2
DOIs	https://doi.org/10.1016/S1002-0721(07)60070-2
State	Published - Apr 2007

Keywords

CeO/γ-AlO
intrinsic kinetics
rare earths
recyclable
SO2

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10.1016/S1002-0721(07)60070-2

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title = "Study on Sulfation of CeO2/γ-Al2O3 Sorbent in Simulated Flue Gas",

abstract = "The sulfation of CeO2/γ-Al2O3 sorbent in simulated flue gas was studied. A series of CeO2/γ-Al2O3 sorbents with different CeO2 loadings were prepared by impregnation and characterized by X-ray diffraction. Thermogravimetric technique was used to study the sulfation of CeO2/γ-Al2O3 sorbents, mainly on the CeO2 loading, sulfation cycles, and intrinsic kinetics. The study revealed that monolayer coverage of CeO2 supported on γ-Al2O3 was 0.125 g CeO2/g (γ-Al2O3). Below monolayer coverage, CeO2 was highly dispersed on γ-Al2O3. The optimal CeO2 loading on sulfation was 0.03 g CeO2/g (γ-Al2O3). CeO2/γ-Al2O3 sorbent was recyclable by controlling sulfation time. Intrinsic kineticd equation was R = 1.1394 × 10-4 × exp (-1,508.39/T) mg·mg-1·s-1. Activation energy and reaction order were 12.54 kJ·mol-1 and first order, respectively.",

keywords = "CeO/γ-AlO, intrinsic kinetics, rare earths, recyclable, SO2",

author = "Qingchun Yu and Shichao Zhang and Xindong Wang and Jie Zhang and Zhenming Lu",

year = "2007",

month = apr,

doi = "10.1016/S1002-0721(07)60070-2",

language = "英语",

volume = "25",

pages = "184--188",

journal = "Journal of Rare Earths",

issn = "1002-0721",

publisher = "Editorial Office of Chinese Rare Earths",

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TY - JOUR

T1 - Study on Sulfation of CeO2/γ-Al2O3 Sorbent in Simulated Flue Gas

AU - Yu, Qingchun

AU - Zhang, Shichao

AU - Wang, Xindong

AU - Zhang, Jie

AU - Lu, Zhenming

PY - 2007/4

Y1 - 2007/4

N2 - The sulfation of CeO2/γ-Al2O3 sorbent in simulated flue gas was studied. A series of CeO2/γ-Al2O3 sorbents with different CeO2 loadings were prepared by impregnation and characterized by X-ray diffraction. Thermogravimetric technique was used to study the sulfation of CeO2/γ-Al2O3 sorbents, mainly on the CeO2 loading, sulfation cycles, and intrinsic kinetics. The study revealed that monolayer coverage of CeO2 supported on γ-Al2O3 was 0.125 g CeO2/g (γ-Al2O3). Below monolayer coverage, CeO2 was highly dispersed on γ-Al2O3. The optimal CeO2 loading on sulfation was 0.03 g CeO2/g (γ-Al2O3). CeO2/γ-Al2O3 sorbent was recyclable by controlling sulfation time. Intrinsic kineticd equation was R = 1.1394 × 10-4 × exp (-1,508.39/T) mg·mg-1·s-1. Activation energy and reaction order were 12.54 kJ·mol-1 and first order, respectively.

AB - The sulfation of CeO2/γ-Al2O3 sorbent in simulated flue gas was studied. A series of CeO2/γ-Al2O3 sorbents with different CeO2 loadings were prepared by impregnation and characterized by X-ray diffraction. Thermogravimetric technique was used to study the sulfation of CeO2/γ-Al2O3 sorbents, mainly on the CeO2 loading, sulfation cycles, and intrinsic kinetics. The study revealed that monolayer coverage of CeO2 supported on γ-Al2O3 was 0.125 g CeO2/g (γ-Al2O3). Below monolayer coverage, CeO2 was highly dispersed on γ-Al2O3. The optimal CeO2 loading on sulfation was 0.03 g CeO2/g (γ-Al2O3). CeO2/γ-Al2O3 sorbent was recyclable by controlling sulfation time. Intrinsic kineticd equation was R = 1.1394 × 10-4 × exp (-1,508.39/T) mg·mg-1·s-1. Activation energy and reaction order were 12.54 kJ·mol-1 and first order, respectively.

KW - CeO/γ-AlO

KW - intrinsic kinetics

KW - rare earths

KW - recyclable

KW - SO2

UR - https://www.scopus.com/pages/publications/34249281668

U2 - 10.1016/S1002-0721(07)60070-2

DO - 10.1016/S1002-0721(07)60070-2

M3 - 文章

AN - SCOPUS:34249281668

SN - 1002-0721

VL - 25

SP - 184

EP - 188

JO - Journal of Rare Earths

JF - Journal of Rare Earths

IS - 2

ER -

Study on Sulfation of CeO₂/γ-Al₂O₃ Sorbent in Simulated Flue Gas

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