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. https://resolver.caltech.edu/CaltechAUTHORS:20151006-150212434
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Abstract
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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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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Subject Keywords: | Supported carbon membranes; Furfuryl alcohol; Vapor deposition polymerization | |||||||||
Issue or Number: | 1-2 | |||||||||
DOI: | 10.1016/S0376-7388(00)00444-0 | |||||||||
Record Number: | CaltechAUTHORS:20151006-150212434 | |||||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20151006-150212434 | |||||||||
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, http://dx.doi.org/10.1016/S0376-7388(00)00444-0. (http://www.sciencedirect.com/science/article/pii/S0376738800004440) | |||||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
ID Code: | 60825 | |||||||||
Collection: | CaltechAUTHORS | |||||||||
Deposited By: | George Porter | |||||||||
Deposited On: | 07 Oct 2015 18:03 | |||||||||
Last Modified: | 10 Nov 2021 22:40 |
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