Double-layer ceramic-carbonate hollow fiber membrane with superior mechanical strength for CO2 separation

Tianjia Chen, Yanyang Xu, Yinmin Zhang, Yanbing Gong, Yongfeng Zhang, Jerry Y.S. Lin

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Ceramic-carbonate dual-phase hollow fiber membranes offer good performance for CO2 separation at the temperature of 600–1000 °C but suffer from poor mechanical strength. This paper reports a new structure of a ceramic-carbonate, dual-phase hollow fiber membrane with high CO2 permeance and superior mechanical strength for CO2 separation. The hollow fiber supports of about 1.4 mm OD and 1.0 mm ID are made of Ce0.8Sm0.2O2-δ (SDC) and La2NiO4+δ (LNO) materials. The final hollow fiber membrane contains an SDC-carbonate outer layer and a SDC/LNO inner layer, forming a special double-layer structure of the membrane. The CO2 flux of the membrane is 2.3 mL min−1·cm−2 at 750 °C. In addition, the ultimate load and bending strength of the new SDC-SDC/LNO-carbonate hollow fiber membrane are, respectively, 3.6 and 1.9 times higher than that of pure single-layer SDC-carbonate hollow fiber membrane. This improvement of the mechanical strength is enabled by the unique double-layer structure of the hollow fiber membrane.

Original languageEnglish (US)
Article number120701
JournalJournal of Membrane Science
Volume658
DOIs
StatePublished - Sep 15 2022

Keywords

  • CO permeation
  • Ceramic
  • Hollow fiber
  • Mechanical strength
  • Stability

ASJC Scopus subject areas

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

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