Characterization of porosity via secondary reactions. Final technical report, 1 September 1991--30 November 1995

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A new approach to the study of porosity and porosity development in coal chars during gasification was investigated. This approach involves the establishment of the relationships between the amount and type of surface complexes evolved during post-activation temperature programmed desorption (TPD), and the porosity, as measured by gas adsorption and small angle neutron scattering (SANS) techniques. With this new method, the total surface area and micropore volume can be determined by the interpretation of post-activation TPD spectra. The primary conclusion of this work is that it is possible to predict total surface area and micropore volume from TPD spectra. From ... continued below

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239 p.

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Calo, J. M.; Zhang, L.; Hall, P. J. & Antxustegi, M. September 1997.

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Description

A new approach to the study of porosity and porosity development in coal chars during gasification was investigated. This approach involves the establishment of the relationships between the amount and type of surface complexes evolved during post-activation temperature programmed desorption (TPD), and the porosity, as measured by gas adsorption and small angle neutron scattering (SANS) techniques. With this new method, the total surface area and micropore volume can be determined by the interpretation of post-activation TPD spectra. The primary conclusion of this work is that it is possible to predict total surface area and micropore volume from TPD spectra. From the extended random pore model, additional information about the micropore surface area, the nonmicroporous surface area, and the mean micropore size development as a function of reaction time (or burn-off) can also be predicted. Therefore, combining the TPD technique and the extended random pore model provides a new method for the characterization of char porosity.

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239 p.

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OSTI as DE98051248

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  • Other Information: PBD: Sep 1997

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  • Other: DE98051248
  • Report No.: DOE/PC/91305--T2
  • Grant Number: FG22-91PC91305;W-31109-ENG-38
  • DOI: 10.2172/591306 | External Link
  • Office of Scientific & Technical Information Report Number: 591306
  • Archival Resource Key: ark:/67531/metadc693860

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  • September 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Dec. 16, 2015, 12:12 p.m.

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Calo, J. M.; Zhang, L.; Hall, P. J. & Antxustegi, M. Characterization of porosity via secondary reactions. Final technical report, 1 September 1991--30 November 1995, report, September 1997; United States. (digital.library.unt.edu/ark:/67531/metadc693860/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.