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

Tianjia Chen; Han Chun Wu; Yongdan Li; Jerry Lin

doi:10.1021/acs.iecr.7b03856

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

Tianjia Chen, Han Chun Wu, Yongdan Li, Jerry Lin

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

16 Scopus citations

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 Ce_0.8Sm_0.2O_1.9 (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.

Original language	English (US)
Pages (from-to)	14662-14669
Number of pages	8
Journal	Industrial and Engineering Chemistry Research
Volume	56
Issue number	49
DOIs	https://doi.org/10.1021/acs.iecr.7b03856
State	Published - Dec 13 2017

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

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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 Wu, {Han Chun} and Yongdan Li and Jerry Lin",

note = "Funding Information: The work was supported by the Natural Science Foundation of China (Contract Nos. 21120102039 and 51402210), the Tianjin Municipal Science and Technology Commission (Contract Nos. 13JCZDJC26600 and 15JCQNJC06500), the Ministry of Education of China (Contract No. 20130032120023), and the U.S. National Science Foundation (Award No. CBET-1604700). The authors are also grateful for the support from the Program of Introducing Talents to the University Disciplines under File No. B06006, and the Program for Changjiang Scholars and Innovative Research Teams in Universities under File No. IRT 0641 for the research collaboration. Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

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doi = "10.1021/acs.iecr.7b03856",

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AU - Chen, Tianjia

AU - Wu, Han Chun

AU - Li, Yongdan

AU - Lin, Jerry

N1 - Funding Information: The work was supported by the Natural Science Foundation of China (Contract Nos. 21120102039 and 51402210), the Tianjin Municipal Science and Technology Commission (Contract Nos. 13JCZDJC26600 and 15JCQNJC06500), the Ministry of Education of China (Contract No. 20130032120023), and the U.S. National Science Foundation (Award No. CBET-1604700). The authors are also grateful for the support from the Program of Introducing Talents to the University Disciplines under File No. B06006, and the Program for Changjiang Scholars and Innovative Research Teams in Universities under File No. IRT 0641 for the research collaboration. Publisher Copyright: © 2017 American Chemical Society.

PY - 2017/12/13

Y1 - 2017/12/13

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.

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ER -

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

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