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Title: Carbon molecular sieve membranes on porous composite tubular supports for high performance gas separations

Journal Article · · Microporous and Mesoporous Materials
 [1];  [2];  [1];  [2]
  1. Korea Research Institute of Chemical Technology, Daejeon (South Korea)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Thin carbon molecular sieve membranes (<500 nm) were fabricated inside of long geometry (9 inch) of stainless steel tubes with all welded construction. Alumina intermediate layer on porous stainless steel tube support was used to reduce effective support pore size and to provide a more uniform surface roughness. Novolac phenolic resin solution was then coated on the inside of porous stainless steel tube by slip casting while their viscosities were controlled from 5 centipoises to 30 centipoises. Carbonization was carried out at 700 °C in which thermal stress was minimized and high quality carbon films were prepared. The highest separation performance characteristics were obtained using 20 cP phenolic resin solutions. The fabricated CMSM showed good separation factor for He/N2 462, CO2/N2 97, and O2/N2 15.4. As the viscosity of polymer precursor solution was reduced from 20 cP to 15 cP, gas permeance values almost doubled with somewhat lower separation factor He/N2 156, CO2/N2 88, and O2/N2 7.7.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1241458
Journal Information:
Microporous and Mesoporous Materials, Vol. 224, Issue C; ISSN 1387-1811
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 34 works
Citation information provided by
Web of Science

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Cited By (2)

Effect of stabilization temperature during pyrolysis process of P84 co-polyimide-based tubular carbon membrane for H 2 /N 2 and He/N 2 separations journal April 2018
Effect of intermediate layer on gas separation performance of disk supported carbon membrane journal May 2017