Passive CO{sub 2} removal using a carbon fiber composite molecular sieve

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Manufacture and characterization of a carbon fiber composite molecular sieve (CFCMS), and its efficacy as a CO{sub 2} gas adsorbent are reported. The CFCMS consists of an isotropic pitch derived carbon fiber and a phenolic resin derived carbon binder. Activation (selective gasification) of the CFCMS creates microporosity in the carbon fibers, yielding high micropore volumes (>0.5 cm{sup 3}/g) and BET surface areas (>1000 m{sup 2}/g). Moreover, the CFCMS material is a rigid, strong, monolith with an open structure that allows the free-flow of fluids through the material. This combination of properties provides an adsorbent material that has several distinct advantages ... continued below

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12 p.

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Burchell, T. D. & Judkins, R. R. December 1995.

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Description

Manufacture and characterization of a carbon fiber composite molecular sieve (CFCMS), and its efficacy as a CO{sub 2} gas adsorbent are reported. The CFCMS consists of an isotropic pitch derived carbon fiber and a phenolic resin derived carbon binder. Activation (selective gasification) of the CFCMS creates microporosity in the carbon fibers, yielding high micropore volumes (>0.5 cm{sup 3}/g) and BET surface areas (>1000 m{sup 2}/g). Moreover, the CFCMS material is a rigid, strong, monolith with an open structure that allows the free-flow of fluids through the material. This combination of properties provides an adsorbent material that has several distinct advantages over granular adsorbents in gas separation systems such as pressure swing adsorption (PSA) units. The results of our initial evaluations of the CO{sub 2} adsorption capacity and kinetics of CFCMS are reported. The room temperature CO{sub 2} adsorption capacity of CFCMS is >120 mg of CO{sub 2} per g of CFCMS. A proposed project is described that targets the development, over a three-year period, of a demonstration separation system based on CFCMS for the removal of CO{sub 2} from a flue gas slip stream at a coal-fired power plant. The proposed program would be conducted jointly with industrial and utility partners.

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12 p.

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OSTI as DE96003055

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  • Greenhouse gases: mitigation options, London (United Kingdom), 22-25 Aug 1995

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  • Other: DE96003055
  • Report No.: CONF-9508116--1
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 162178
  • Archival Resource Key: ark:/67531/metadc626832

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  • December 1995

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  • June 16, 2015, 7:43 a.m.

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  • May 2, 2016, 4:01 p.m.

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Burchell, T. D. & Judkins, R. R. Passive CO{sub 2} removal using a carbon fiber composite molecular sieve, article, December 1995; Tennessee. (digital.library.unt.edu/ark:/67531/metadc626832/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.