Carbon molecular sieve membranes for gas separation

Tseng, H.H., Kumar, I.A., Weng, T.H., Lu, C.Y., Wey, M.Y., 2009, Preparation and characterization of carbon molecular sieve membranes for gas separation-the effect of incorporated multi-wall carbon nanotubes. Desalination 240 40-45. 

Wang L-J and Chau-Nan Hong F. Carbon-based molecular sieve membranes for gas separation by inductively-coupled-plasma chemical vapor deposition. Micropor. Mesopor. Mat. 2005 77 167-174. 

Wang, L.-J., and Hong, F. C.-N. (2005a). Effects of surface treatments and annealing on carbon-based molecular sieve membranes for gas separation. Appl. Surf. Sci. 240, 161-174. 

Liu, P.K.T., Carbon Molecular Sieve Membrane as Reactor/Separator for Water-Gas-Shift Reaction, Proceedings of2007 U.S. DOE Hydrogen Annual Merit Review Meeting, Arlington, VA, May 2007. 

Lee LL, Tsai DS (2001) Synthesis and permeation properties of silicon-carbon-based inorganic membrane for gas separation. Ind Eng Chem Res 40 (2) 612-616 Sedigh MG, Xu L, Tsotsis TT, Sahimi M (1999) Transport and morphological characteristics of polyetherimide-based carbon molecular sieve membranes. Ind Eng Chem Res 38 (9) 3367-3380... 

Rao, PS, Wey, MY, Tseng, HH, Kumar, lA and Weng, TH (2008), A comparison of carbon nanotube molecular sieve membrane with polymer carbon molecular sieve membranes for the gas separation apphcation , MicroporoMS Mesoporous Mafer, 113,499-510... 

The hollow fiber membranes are the optimum choice for gas separation modules due to their very high packing density (up to 30,000 m /m may be attained [1]). Figure 4.21 shows alternative configurations for such modules [108]. Modifications of this configuration exist, where possibility for introduction of sweep gas on permeate side is included, or fibers may be arranged transversal to the flow in order to minimize concentration polarization [109,110]. The hollow fiber membranes are usually asymmetric polymers, but composites also exist. Carbon molecular sieve membranes may easily be prepared as hollow fibers by pyrolysis. 

Carbon molecular sieve membranes are used in gas separation technology, for example, to recover CO2 and H2O from natural gas, and other purification steps. A variety of polymeric precursors for carbon molecular sieve membranes are available, such as poly(imide), poly(acrylonitrile) phenolic resins, and poly(fiuduryl alcohol). PPE can be modified in various ways, which procedure is advantageous for tailoring the selectivity. ... 

M. Yoshimune, 1. Fujiwara, and K. Haraya. Carbon molecular sieve membranes derived from frimethylsilyl substituted poly(phenylene oxide) for gas separation. Carbon, 45(3) 553-560, March 2007. 

Since the pioneering paper of Koresh and Soffer on carbon molecular sieve membranes in 1983 [300] much research has been carried out in the field of carbon-based gas-separation membranes. Selectivities and permeabilities far above the performance of the best polymers have been obtained for carbon molecular sieve membranes by many researchers. One example is a recent publica-... 

Carbon molecular sieve membranes are used in gas separation technology, for example, to recover... 

The concept of caibon membrane for gas separation can be found in the early nineteen seventies. Barrer et al. compressed non-porous graphite caibon into a plug, called caibon membrane [8]. Bird and Trimm used poly(fuifuiyl alcohol) (PFA) to prepare unsupported and supported caibon molecular sieve membranes. During carbonization, they encountered shrinkage problems, which lead to cracking and deformation of the membrane. Hence, they failed to obtain a continuous membrane [9]. 

Carbon molecular sieve membranes suitable for gas separation have been prepared by pyrolyzing thermosetting polymers. CMSMs with pore diameter 3-5 A have ideal separation factors, ranging from 4 to more than 170 for various gas pairs [2]. The permeation characteristics of the molecular sieve carbon membrane can be varied by changing the high temperature treatment parameters [8]. 

Kusakabe K, Gohgi S, Morooka S (1998) Carbon molecular sieving membranes derived from condensed polynuclear aromatic (COPNA) resins for gas separation. Ind Eng Chem Res 37 (11) 4262-4266... 

Petersen J, Matsuda M, Haraya K (1997) Capillary carbon molecular sieve membranes derived from kapton for high temperature gas separation. J Membr Sci 131 (1-2) 85-94 Linkov VM, Sanderson RD, Jacobs EP (1994) Highly asymmetrical carbon membranes. J Membr Sci 95 (1) 93-99... 

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