Tunable Composite Membranes for Gas Separations. Metadata

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Title

  • Main Title Tunable Composite Membranes for Gas Separations.

Creator

  • Author: Ferraris, J.P.
    Creator Type: Personal
  • Author: Balkus, K.J. Jr.
    Creator Type: Personal
  • Author: Musselman, I.H.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Office of the Assistant Secretary for Fossil Energy.
    Contributor Type: Organization
    Contributor Info: USDOE Assistant Secretary for Fossil Energy, Washington, DC (United States)

Publisher

  • Name: Texas Univ., Richardson, TX (United States). Dept. of Chemistry
    Place of Publication: United States

Date

  • Creation: 1997-07-01

Language

  • English

Description

  • Content Description: Solution cast membranes of poly(3-dodecylthiophene) (PDDT) were studied for the room temperature separation of N{sub 2}, 0{sub 2}, and C0{sub 2} procedure for fabricating reproducible, smooth, uniformly thick (-35-pm), defect-free membranes was established. Permeability values were measured for as-cast PDDT membranes (PO{sub 2} = 9.4, PN{sub 2} = 20.2, PCO{sub 2} = 88. 2 Barrers) and selectivity values were calculated (XO{sub 2}/N{sub 2} = 2.2, XC0{sub 2}/N{sub 2} = 9.4). Chemically induced doping (-23%) with SbCI5 resulte in a decrease in permeability (PN{sub 2} = 3.5, P0{sub 2} =10.5, PCO{sub 2} = 48.5 Barrers) and a corresponding increase in permselectivity (X 0{sub 2}/N{sub 2} = 0, (xCO{sub 2}/N{sub 2} =14.0)). Membrane undoping with hydrazine partially reversed these trends (PN{sub 2} = 5.4, P0{sub 2} = 15.1, PCO{sub 2} = 62.9 Barrers), (XO{sub 2}/N{sub 2} = 2.8), (XCO{sub 2}/N{sub 2} =I 1. 6). The chemical composition cast, doped, and undoped PDDT membranes were determined using elemental analysis and energy dispersive x-ray spectrometry. Membrane microstructure was investigated by optical microscopy, TappingModeTM atomic force microscopy and scanning electron microscopy. The composition and microscopy results were correlated with changes in gas-transport properties. Two papers were presented at the Meeting of the North American Membranes Society, (June 2-4,1997, Baltimore, MD).
  • Physical Description: 18 p.

Subject

  • Keyword: Membranes
  • Keyword: Oxygen
  • Keyword: Carbon Dioxide
  • STI Subject Categories: 01 Coal, Lignite, And Peat
  • Keyword: Separation Processes
  • Keyword: Progress Report
  • Keyword: Microscopy
  • Keyword: Microstructure
  • Keyword: Nitrogen
  • Keyword: Permeability
  • STI Subject Categories: 40 Chemistry

Source

  • Other Information: PBD: Jul 1997

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Other: DE98051823
  • Report No.: DOE/PC/94222--T1
  • Grant Number: FG22-94PC94222
  • DOI: 10.2172/644664
  • Office of Scientific & Technical Information Report Number: 644664
  • Archival Resource Key: ark:/67531/metadc698661

Note

  • Display Note: OSTI as DE98051823
  • Display Note: Other: FDE: PDF; PL:
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