Poisoning Effect of H2S on CO2 Permeation of Samarium-Doped-Ceria/Carbonate Dual-Phase Membrane

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Poisoning Effect of H2S on CO2 Permeation of Samarium-Doped-Ceria/Carbonate Dual-Phase Membrane. / Chen, Tianjia; Wu, Han-Chun; Li, Yongdan; Lin, Y.S.

In: Industrial and Engineering Chemistry Research, Vol. 56, No. 49, 14.11.2017, p. 14662-14669.

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@article{dd98a8ac9bc645e0aa6cf909aba79f22,
title = "Poisoning Effect of H2S on CO2 Permeation of Samarium-Doped-Ceria/Carbonate Dual-Phase Membrane",
abstract = "CO2-permselective ceramic–carbonate dual-phase membranes offer potential for uses in separators or membrane reactors for conversion of coal derived syngas to hydrogen with CO2 capture. Coal derived syngas contains H2S, but the effect of H2S on permeation properties of these dual-phase membranes was unclear. This study examines the stability of Ce0.8Sm0.2O1.9 (SDC)–Li2CO3/Na2CO3 membrane in H2S-containing gas. CO2 permeation flux of the SDC–carbonate membrane is stable in a H2/N2/CO2 mixture gas, but it decreases after the introduction of H2S. The extent of the CO2 permeation flux reduction increases with H2S concentration in the feed gas and run time. Exposure to H2S results in appearance of a tree-branch-like structure near the feed side of the SDC–carbonate membrane, and formation of Ce2O2S on the SDC phase. Such an exposure has negligible effect on the carbonate phase. The formation of Ce2O2S lowers the oxygen ionic conductivity of the SDC phase, reducing the CO2 permeance for the dual-phase membrane.",
author = "Tianjia Chen and Han-Chun Wu and Yongdan Li and Y.S. Lin",
year = "2017",
month = "11",
day = "14",
doi = "10.1021/acs.iecr.7b03856",
language = "English",
volume = "56",
pages = "14662--14669",
journal = "Industrial and Engineering Chemistry Research",
issn = "0888-5885",
publisher = "AMERICAN CHEMICAL SOCIETY",
number = "49",

}

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TY - JOUR

T1 - Poisoning Effect of H2S on CO2 Permeation of Samarium-Doped-Ceria/Carbonate Dual-Phase Membrane

AU - Chen, Tianjia

AU - Wu, Han-Chun

AU - Li, Yongdan

AU - Lin, Y.S.

PY - 2017/11/14

Y1 - 2017/11/14

N2 - CO2-permselective ceramic–carbonate dual-phase membranes offer potential for uses in separators or membrane reactors for conversion of coal derived syngas to hydrogen with CO2 capture. Coal derived syngas contains H2S, but the effect of H2S on permeation properties of these dual-phase membranes was unclear. This study examines the stability of Ce0.8Sm0.2O1.9 (SDC)–Li2CO3/Na2CO3 membrane in H2S-containing gas. CO2 permeation flux of the SDC–carbonate membrane is stable in a H2/N2/CO2 mixture gas, but it decreases after the introduction of H2S. The extent of the CO2 permeation flux reduction increases with H2S concentration in the feed gas and run time. Exposure to H2S results in appearance of a tree-branch-like structure near the feed side of the SDC–carbonate membrane, and formation of Ce2O2S on the SDC phase. Such an exposure has negligible effect on the carbonate phase. The formation of Ce2O2S lowers the oxygen ionic conductivity of the SDC phase, reducing the CO2 permeance for the dual-phase membrane.

AB - CO2-permselective ceramic–carbonate dual-phase membranes offer potential for uses in separators or membrane reactors for conversion of coal derived syngas to hydrogen with CO2 capture. Coal derived syngas contains H2S, but the effect of H2S on permeation properties of these dual-phase membranes was unclear. This study examines the stability of Ce0.8Sm0.2O1.9 (SDC)–Li2CO3/Na2CO3 membrane in H2S-containing gas. CO2 permeation flux of the SDC–carbonate membrane is stable in a H2/N2/CO2 mixture gas, but it decreases after the introduction of H2S. The extent of the CO2 permeation flux reduction increases with H2S concentration in the feed gas and run time. Exposure to H2S results in appearance of a tree-branch-like structure near the feed side of the SDC–carbonate membrane, and formation of Ce2O2S on the SDC phase. Such an exposure has negligible effect on the carbonate phase. The formation of Ce2O2S lowers the oxygen ionic conductivity of the SDC phase, reducing the CO2 permeance for the dual-phase membrane.

U2 - 10.1021/acs.iecr.7b03856

DO - 10.1021/acs.iecr.7b03856

M3 - Article

VL - 56

SP - 14662

EP - 14669

JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

SN - 0888-5885

IS - 49

ER -

ID: 16590197