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Preparation of Oxygen Ion Conducting Ceramic Hollow-Fiber Membranes

Liu, Shaomin and Gavalas, George R. (2005) Preparation of Oxygen Ion Conducting Ceramic Hollow-Fiber Membranes. Industrial & Engineering Chemistry Research, 44 (20). pp. 7633-7637. ISSN 0888-5885. doi:10.1021/ie040279i.

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Hollow-fiber membranes of mixed conducting perovskite Ba_(0.5)Sr_(0.5)Co_(0.8)Fe_(0.2)O_(3-δ) were prepared using a sequence of extrusion, gelation, and sintering steps. For this purpose, a finely divided mixture of the component oxides was prepared by the modified Pechini technique and suspended in a polymer solution. The suspension was extruded through a spinneret and gelled in water. The resulting fiber was first heated at 800 °C to remove the polymer and then at 1100 °C to form the perovskite and simultaneously sinter the particles to a gastight membrane. The fibers were characterized by scanning electron microscopy and tested for air separation at ambient pressure and temperature between 700 and 950 °C. The maximum oxygen flux measured was 3.9 mL/min/cm^2 at 950 °C and 0.022 atm of average permeate oxygen partial pressure.

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Gavalas, George R.0000-0003-1468-6835
Additional Information:© 2005 American Chemical Society. Received for review November 15, 2004; Accepted March 22, 2005. We gratefully acknowledge the support provided by the Petroleum Research Fund of the American Chemical Society (Grant 38162-AC5).
Funding AgencyGrant Number
American Chemical Society Petroleum Research Fund38162-AC5
Issue or Number:20
Record Number:CaltechAUTHORS:20151006-150210337
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Official Citation:Preparation of Oxygen Ion Conducting Ceramic Hollow-Fiber Membranes Shaomin Liu and George R. Gavalas Industrial & Engineering Chemistry Research 2005 44 (20), 7633-7637 DOI: 10.1021/ie040279i
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:60817
Deposited By: George Porter
Deposited On:07 Oct 2015 14:04
Last Modified:10 Nov 2021 22:39

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