Cristin-resultat-ID: 2015756
Sist endret: 17. juni 2022, 10:04
NVI-rapporteringsår: 2022
Resultat
Vitenskapelig artikkel
2022

Contact angle screening and asymmetric dual-phase CO2 separation membranes

Bidragsytere:
  • Wen Xing og
  • Anne Støre

Tidsskrift

Journal of Membrane Science
ISSN 0376-7388
e-ISSN 1873-3123
NVI-nivå 2

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2022
Volum: 652
Artikkelnummer: 120447
Open Access

Importkilder

Scopus-ID: 2-s2.0-85126665278

Beskrivelse Beskrivelse

Tittel

Contact angle screening and asymmetric dual-phase CO2 separation membranes

Sammendrag

Dual-phase CO2 separation membrane consisting of molten carbonates confined in a solid matrix can separate CO2 at high temperatures. The contact angle of molten carbonates to different oxides that can potentially serve as membrane supports was screened between 450 and 650 °C. These oxides have different electrical transport properties, including oxide ion, mixed, and electronic conducting. The contact angles vary between 80° and 10° for different materials. Asymmetric membranes were fabricated using wettable oxide ion conductors BTM and CGO (Bi0.8Tm0.2O1.5 and Ce0.8Gd0.2O2-δ) infiltrated with molten carbonates supported by the most "non-wetting" oxide BPR (Bi0.8Pr0.2O1.5) selected in the contact angle screening. The membranes show CO2 flux in the range of 0.035–0.35 ml/min cm2 at temperatures from 500 to 650 °C. Compared to a symmetric membrane with similar total membrane thickness, the asymmetric architecture significantly reduces the effective membrane thickness and increases CO2 flux. After the CO2 flux measurements, the membrane was examined with SEM and EDS mapping, showing that the molten carbonates were mainly confined within the top membrane and sealing area without penetrating the support layer.

Bidragsytere

Aktiv cristin-person

Wen Xing

  • Tilknyttet:
    Forfatter
    ved Bærekraftig energiteknologi ved SINTEF AS

Anne Støre

  • Tilknyttet:
    Forfatter
    ved Metallproduksjon og prosessering ved SINTEF AS
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