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Preparation of supported carbon membranes from furfuryl alcohol by vapor deposition polymerization

Wang, Huanting and Zhang, Lixiong and Gavalas, George R. (2000) Preparation of supported carbon membranes from furfuryl alcohol by vapor deposition polymerization. Journal of Membrane Science, 177 (1-2). pp. 25-31. ISSN 0376-7388. doi:10.1016/S0376-7388(00)00444-0.

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Supported carbon membranes were prepared from furfuryl alcohol (FA) precursor by vapor deposition polymerization (VDP). For this purpose γ-Al_2O_3/α-Al_2O_3 or glass/α-Al_2O_3 support tubes were pretreated with an acid catalyst and exposed to FA vapors at 90°C. The tubes were then heated at 200°C to crosslink the poly(furfuryl alcohol) (PFFA) polymer and carbonized slowly to 600°C. The polymerization and carbonization cycle was repeated once to improve the permeation properties. The membranes were examined by scanning electron microscopy (SEM) and tested in a permeation cell with single gases (H_2, N_2, O_2, CO_2, CH_4) and with the mixture CO_2–CH_4. After the first polymerization/carbonization cycle the membranes had little selectivity for gas separations. After the second polymerization/carbonization cycle the membranes had ideal selectivities 10–13 for O_2:N_2, 80–90 for CO_2:CH_4, and 90–350 for H_2:N_2 at room temperature. The permeance was 0.6–2.5 for H_2, 0.27–0.58 for CO_2 and 0.08 for O_2, all in MPU (1 MPU=10^(−8) mol/m^2 Pa s). The permeances were sharply higher at 150°C but the selectivities were lower, e.g. one of the membranes had H2 permeance 10.6 MPU and H_2:N_2 ideal selectivity 30.

Item Type:Article
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Gavalas, George R.0000-0003-1468-6835
Additional Information:© 2000 Elsevier. Received 28 March 2000; received in revised form 27 April 2000; accepted 28 April 2000. Funding by a grant from Mobil Technology Company is gratefully acknowledged.
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Mobil Technology CompanyUNSPECIFIED
Subject Keywords:Supported carbon membranes; Furfuryl alcohol; Vapor deposition polymerization
Issue or Number:1-2
Record Number:CaltechAUTHORS:20151006-150212434
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Official Citation:Huanting Wang, Lixiong Zhang, George R Gavalas, Preparation of supported carbon membranes from furfuryl alcohol by vapor deposition polymerization, Journal of Membrane Science, Volume 177, Issues 1–2, 30 August 2000, Pages 25-31, ISSN 0376-7388, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:60825
Deposited By: George Porter
Deposited On:07 Oct 2015 18:03
Last Modified:10 Nov 2021 22:40

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