A novel study of sulfur-resistance for CO 2 separation through asymmetric ceramic-carbonate dual-phase membrane at high temperature

Tianjia Chen, Zhigang Wang, Sonali Das, Lina Liu, Yongdan Li, Sibudjing Kawi, Jerry Lin

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Sulfur compounds present in high-temperature gases from various industrial sources have a negative influence on the permeability of different kinds of membranes. In this study, we present a general and efficient strategy to design and prepare two asymmetric membranes for CO 2 separation that are resistant to H 2 S. The asymmetric membranes, mainly composed of one adsorbed layer for H 2 S consumption and one dense ceramic-carbonate layer for CO 2 separation, show not only high CO 2 permeation flux but also remarkably stable permeation behavior under an H 2 S-containing atmosphere. The sulfur-resistant stability times of the asymmetric membranes are approximately 10–12 times higher than the single ceramic-carbonate dual-phase membrane. The adsorbed layer of the asymmetric membranes can react with H 2 S to form Ce-O-S phases, gradually causing deactivation of the adsorbed layer. However, the adsorbed layer can be regenerated in the oxygen-containing gas stream above 850 °C, which can effectively remove the sulfur content from the adsorbed layer, making recycle of the membrane possible. Sulfur accumulated in the adsorbed layer of the membrane as a Ce 2 O 2 S phase, can be oxidized into SO 2 under air stream and elemental sulfur (S) under a 2.5% O 2 /He gas stream. These asymmetric membranes thus possess high permeation stability in the H 2 S-containing atmosphere with good regenerability and also have potential in collection and removal of sulfur impurities from gas streams.

Original languageEnglish (US)
Pages (from-to)72-81
Number of pages10
JournalJournal of Membrane Science
DOIs
StatePublished - Jul 1 2019

Fingerprint

Carbonates
Ceramics
Carbon Monoxide
Sulfur
carbonates
sulfur
ceramics
membranes
Membranes
Temperature
gas streams
Gases
Permeation
Atmosphere
S Phase
atmospheres
Sulfur Compounds
sulfur compounds
Sulfur compounds
high temperature gases

Keywords

  • CO permeation
  • Dual phase membrane
  • H S poisoning
  • Regeneration capacity
  • Sulfur resistance

ASJC Scopus subject areas

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

Cite this

A novel study of sulfur-resistance for CO 2 separation through asymmetric ceramic-carbonate dual-phase membrane at high temperature . / Chen, Tianjia; Wang, Zhigang; Das, Sonali; Liu, Lina; Li, Yongdan; Kawi, Sibudjing; Lin, Jerry.

In: Journal of Membrane Science, 01.07.2019, p. 72-81.

Research output: Contribution to journalArticle

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AU - Li, Yongdan

AU - Kawi, Sibudjing

AU - Lin, Jerry

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AB - Sulfur compounds present in high-temperature gases from various industrial sources have a negative influence on the permeability of different kinds of membranes. In this study, we present a general and efficient strategy to design and prepare two asymmetric membranes for CO 2 separation that are resistant to H 2 S. The asymmetric membranes, mainly composed of one adsorbed layer for H 2 S consumption and one dense ceramic-carbonate layer for CO 2 separation, show not only high CO 2 permeation flux but also remarkably stable permeation behavior under an H 2 S-containing atmosphere. The sulfur-resistant stability times of the asymmetric membranes are approximately 10–12 times higher than the single ceramic-carbonate dual-phase membrane. The adsorbed layer of the asymmetric membranes can react with H 2 S to form Ce-O-S phases, gradually causing deactivation of the adsorbed layer. However, the adsorbed layer can be regenerated in the oxygen-containing gas stream above 850 °C, which can effectively remove the sulfur content from the adsorbed layer, making recycle of the membrane possible. Sulfur accumulated in the adsorbed layer of the membrane as a Ce 2 O 2 S phase, can be oxidized into SO 2 under air stream and elemental sulfur (S) under a 2.5% O 2 /He gas stream. These asymmetric membranes thus possess high permeation stability in the H 2 S-containing atmosphere with good regenerability and also have potential in collection and removal of sulfur impurities from gas streams.

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