CO2 permeation through asymmetric thin tubular ceramic-carbonate dual-phase membranes

Xueliang Dong, Han Chun Wu, Jerry Lin

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Ceramic-carbonate dual-phase dense membrane is a promising high temperature CO2 separation membrane with remarkable CO2 permeance and theoretically infinite CO2 selectivity. This paper reports synthesis and CO2 permeation properties of asymmetric tubular dual-phase membranes with a thin samarium doped ceria (Ce0.8Sm0.2O1.9, SDC)-carbonate separation layer and a thick porous SDC-Bi1.5Y0.3Sm0.2O3-δ (BYS) support. The asymmetric tubular thin (0.12 mm) dual-phase membrane has much higher CO2 permeance and lower activation energy for permeation than the thick (1.0–1.5 mm) membranes. At 900 °C with 50%CO2/N2 feed at 1 atm, the CO2 permeation flux and permeance for the thin membrane reach 1.53 × 10−2 mol m−2 s−1 (or 2.05 mL(STP) cm−2 min−1) and 3.16 × 10−7 mol m−2 s−1 Pa−1, respectively, with activation energy for permeation of 62.5 kJ/mol. These dual-phase membranes exhibit slightly higher CO2 permeance with essentially same activation energy for permeation, and stable operation, for CO2 permeation with simulated syngas (with the composition of 49.5%CO, 36%CO2, 4.5%N2, 10%H2) feed. The CO2 permeation fluxes of the tubular asymmetric membranes can be well described by the power-function flux equation. The analysis of CO2 permeation data with the model shows that the CO2 separation performance of the tubular asymmetric membranes can be further improved by optimizing the microstructure of ceramic porous supports. This work demonstrates that asymmetric SDC-carbonate dual-phase membrane has high potential for practical application in high temperature CO2 separation.

Original languageEnglish (US)
Pages (from-to)73-81
Number of pages9
JournalJournal of Membrane Science
Volume564
DOIs
StatePublished - Oct 15 2018

Fingerprint

Carbonates
Ceramics
Permeation
carbonates
ceramics
membranes
Membranes
Activation energy
Fluxes
activation energy
Samarium
Temperature
synthesis gas
samarium
Cerium compounds
Carbon Monoxide
selectivity
microstructure
Microstructure

Keywords

  • CO separation
  • Dual-phase membrane
  • Ionic conduction
  • Permeation

ASJC Scopus subject areas

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

Cite this

CO2 permeation through asymmetric thin tubular ceramic-carbonate dual-phase membranes. / Dong, Xueliang; Wu, Han Chun; Lin, Jerry.

In: Journal of Membrane Science, Vol. 564, 15.10.2018, p. 73-81.

Research output: Contribution to journalArticle

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title = "CO2 permeation through asymmetric thin tubular ceramic-carbonate dual-phase membranes",
abstract = "Ceramic-carbonate dual-phase dense membrane is a promising high temperature CO2 separation membrane with remarkable CO2 permeance and theoretically infinite CO2 selectivity. This paper reports synthesis and CO2 permeation properties of asymmetric tubular dual-phase membranes with a thin samarium doped ceria (Ce0.8Sm0.2O1.9, SDC)-carbonate separation layer and a thick porous SDC-Bi1.5Y0.3Sm0.2O3-δ (BYS) support. The asymmetric tubular thin (0.12 mm) dual-phase membrane has much higher CO2 permeance and lower activation energy for permeation than the thick (1.0–1.5 mm) membranes. At 900 °C with 50{\%}CO2/N2 feed at 1 atm, the CO2 permeation flux and permeance for the thin membrane reach 1.53 × 10−2 mol m−2 s−1 (or 2.05 mL(STP) cm−2 min−1) and 3.16 × 10−7 mol m−2 s−1 Pa−1, respectively, with activation energy for permeation of 62.5 kJ/mol. These dual-phase membranes exhibit slightly higher CO2 permeance with essentially same activation energy for permeation, and stable operation, for CO2 permeation with simulated syngas (with the composition of 49.5{\%}CO, 36{\%}CO2, 4.5{\%}N2, 10{\%}H2) feed. The CO2 permeation fluxes of the tubular asymmetric membranes can be well described by the power-function flux equation. The analysis of CO2 permeation data with the model shows that the CO2 separation performance of the tubular asymmetric membranes can be further improved by optimizing the microstructure of ceramic porous supports. This work demonstrates that asymmetric SDC-carbonate dual-phase membrane has high potential for practical application in high temperature CO2 separation.",
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N2 - Ceramic-carbonate dual-phase dense membrane is a promising high temperature CO2 separation membrane with remarkable CO2 permeance and theoretically infinite CO2 selectivity. This paper reports synthesis and CO2 permeation properties of asymmetric tubular dual-phase membranes with a thin samarium doped ceria (Ce0.8Sm0.2O1.9, SDC)-carbonate separation layer and a thick porous SDC-Bi1.5Y0.3Sm0.2O3-δ (BYS) support. The asymmetric tubular thin (0.12 mm) dual-phase membrane has much higher CO2 permeance and lower activation energy for permeation than the thick (1.0–1.5 mm) membranes. At 900 °C with 50%CO2/N2 feed at 1 atm, the CO2 permeation flux and permeance for the thin membrane reach 1.53 × 10−2 mol m−2 s−1 (or 2.05 mL(STP) cm−2 min−1) and 3.16 × 10−7 mol m−2 s−1 Pa−1, respectively, with activation energy for permeation of 62.5 kJ/mol. These dual-phase membranes exhibit slightly higher CO2 permeance with essentially same activation energy for permeation, and stable operation, for CO2 permeation with simulated syngas (with the composition of 49.5%CO, 36%CO2, 4.5%N2, 10%H2) feed. The CO2 permeation fluxes of the tubular asymmetric membranes can be well described by the power-function flux equation. The analysis of CO2 permeation data with the model shows that the CO2 separation performance of the tubular asymmetric membranes can be further improved by optimizing the microstructure of ceramic porous supports. This work demonstrates that asymmetric SDC-carbonate dual-phase membrane has high potential for practical application in high temperature CO2 separation.

AB - Ceramic-carbonate dual-phase dense membrane is a promising high temperature CO2 separation membrane with remarkable CO2 permeance and theoretically infinite CO2 selectivity. This paper reports synthesis and CO2 permeation properties of asymmetric tubular dual-phase membranes with a thin samarium doped ceria (Ce0.8Sm0.2O1.9, SDC)-carbonate separation layer and a thick porous SDC-Bi1.5Y0.3Sm0.2O3-δ (BYS) support. The asymmetric tubular thin (0.12 mm) dual-phase membrane has much higher CO2 permeance and lower activation energy for permeation than the thick (1.0–1.5 mm) membranes. At 900 °C with 50%CO2/N2 feed at 1 atm, the CO2 permeation flux and permeance for the thin membrane reach 1.53 × 10−2 mol m−2 s−1 (or 2.05 mL(STP) cm−2 min−1) and 3.16 × 10−7 mol m−2 s−1 Pa−1, respectively, with activation energy for permeation of 62.5 kJ/mol. These dual-phase membranes exhibit slightly higher CO2 permeance with essentially same activation energy for permeation, and stable operation, for CO2 permeation with simulated syngas (with the composition of 49.5%CO, 36%CO2, 4.5%N2, 10%H2) feed. The CO2 permeation fluxes of the tubular asymmetric membranes can be well described by the power-function flux equation. The analysis of CO2 permeation data with the model shows that the CO2 separation performance of the tubular asymmetric membranes can be further improved by optimizing the microstructure of ceramic porous supports. This work demonstrates that asymmetric SDC-carbonate dual-phase membrane has high potential for practical application in high temperature CO2 separation.

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KW - Ionic conduction

KW - Permeation

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