Carbon-based Membranes for Separation Processes by Ahmad Fauzi Ismail, Dipak Rana, Takeshi Matsuura, Henry C.

By Ahmad Fauzi Ismail, Dipak Rana, Takeshi Matsuura, Henry C. Foley

This e-book offers an important evaluate of carbon-related membranes. it is going to disguise the advance of carbon-related membranes and membrane modules from its onset to the most recent examine on carbon combined matrix membranes. After reviewing development within the learn of membrane strategies, the booklet discusses destiny learn instructions and potential improvement in that box. a suggestion is supplied for readers who want to identify their very own laboratories for carbon membrane learn. For this goal, certain details on education, characterization, and trying out of assorted different types of carbon membrane is equipped. layout and building of carbon membrane modules also are defined in detail.

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2–4]. They reported that the carbon molecular sieve (CMS) film used for gas separation should be as thin as possible in order to enhance the separation efficiency. However, the thin film should be supported by a porous plate for handling convenience. 2 [4]. Rao and Sircar [5–7] introduced nanoporous supported carbon membranes which were prepared by pyrolysis of PVDC layer coated on a macroporous graphite disk support. The diameter of the macropores of the dried polymer film was reduced to the order of nanometer as a result of a heat treatment at 1,000°C for 3€h.

The resulting membranes were found to have oxygen over nitrogen selectivities up to 4 and oxygen fluxes of the order of 10−9€mol/m2€s€Pa. Chen and Yang [9] prepared a large, crack-free carbon molecular sieve membrane (CMSM) supported on a macroporous substrate by coating a layer of PFA followed by controlled pyrolysis. Diffusion of binary mixtures was measured and the results were compared with the kinetic theory for predicting binary diffusivities from pure component diffusivities. €2. Suda and Haraya [10] were successful in preparation of flat, asymmetric carbon molecular sieve membranes, which exhibited the highest gas permselectivities among those fabricated in the past research by pyrolysis of a Kapton type PI derived from pyromellitic dianhydride (PMDA) and 4,4′-oxydianiline (ODA).

1 1. The pyrolysis of PRs provides carbon films with molecular sieve properties [78]. 2. PRs provide a high carbon yield after carbonization [12]. 3. PRs are low cost polymers with numerous applications in different fields [78]. Fuertes and co-workers [12, 46–48, 78] investigated intensively the preparation of carbon membranes from PR precursors. According to Centeno and Fuertes [12], they coated a small quantity of liquid phenolic resin (Novolak type) on the finely polished surface of a porous carbon disk by means of a spin coating technique.

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