Carbon dioxide permeation through ceramic-carbonate dual-phase membrane-effects of sulfur dioxide

Tianjia Chen, Baolong Yu, Yicheng Zhao, Yongdan Li, Jerry Lin

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

CO2 perm-selective ceramic/carbonate dual phase membranes are promising in a number of high temperature separation and reaction processes for CO2 capture or process intensification. The stability of these membranes in gas containing SO2 is important for their applications dealing with sulfur containing stream. The present work studies gas permeation performance and stability of Ce0.8Sm0.2O1.9 (SDC)/Li2CO3-Na2CO3 membrane in SO2 containing gas. During CO2 permeation through the SDC/carbonate membrane with feed gas containing SO2, the CO2 permeation flux decreases with on-stream time and the decrease rate increases with the SO2 concentration in the feed gas. The SDC phase remains unchanged after exposure to SO2 containing gas, but the SO2 exposure of the SDC-carbonate dual phase membrane results in formation of sulfate in the carbonate phase in the membrane. The sulfate content in the molten salt phase increases with SO2 concentration in the gas or exposure time. CO2 permeation flux through SDC/carbonate-sulfate dual phase membranes prepared in this work decreases with the increase of the sulfate content in the molten salt phase. The formation of sulfate in the carbonate phase lowers carbonate ion conductivity which becomes the dominant step causing a reduction in CO2 permeance.

Original languageEnglish (US)
Pages (from-to)477-484
Number of pages8
JournalJournal of Membrane Science
Volume540
DOIs
StatePublished - Oct 15 2017

Fingerprint

Sulfur Dioxide
sulfur dioxides
Carbonates
Sulfur dioxide
Ceramics
Carbon Dioxide
Permeation
carbon dioxide
carbonates
Carbon dioxide
Gases
ceramics
membranes
Membranes
Sulfates
sulfates
gases
molten salts
Molten materials
Salts

Keywords

  • CO permeation
  • Conductivity
  • Dual phase membrane
  • Samarium doped ceria
  • SO poisoning

ASJC Scopus subject areas

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

Cite this

Carbon dioxide permeation through ceramic-carbonate dual-phase membrane-effects of sulfur dioxide. / Chen, Tianjia; Yu, Baolong; Zhao, Yicheng; Li, Yongdan; Lin, Jerry.

In: Journal of Membrane Science, Vol. 540, 15.10.2017, p. 477-484.

Research output: Contribution to journalArticle

Chen, Tianjia ; Yu, Baolong ; Zhao, Yicheng ; Li, Yongdan ; Lin, Jerry. / Carbon dioxide permeation through ceramic-carbonate dual-phase membrane-effects of sulfur dioxide. In: Journal of Membrane Science. 2017 ; Vol. 540. pp. 477-484.
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