The development of porosity in Pittsburgh No. 8 and Wyodak chars as studied using contrast matching small angle neutron scattering

Journal Article · Sun Dec 31 04:00:00 EST 1995 · Preprints of Papers, American Chemical Society, Division of Fuel Chemistry

OSTI ID:420569

Hall, P J; Antxustegi, M M ^[1]; Calo, J M ^[2]

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1. Univ. of Strathclyde, Glasgow (United Kingdom)
2. Brown Univ., Providence, RI (United States)

The development of porosity in coal chars is important in both combustion and gasification processes and there have been a large number of investigations and techniques applied to the subject. A persistent problem in understanding the development of porosity is die existence of closed porosity, which cannot be accessed from the external surface. Intrusive techniques, such as mercury porosimetry, or adsorbative techniques cannot, by definition, give information about such porosity. On the other hand, small angle x-ray scattering (saxs) and small angle neutron scattering (sans) techniques monitor scattering from both open and closed porosity and consequently cannot distinguish them. Additionally, saxs data may be complicated by interparticle scattering.

• OSTI ID: 420569
• Report Number(s): CONF-950801--
• Journal Information: Preprints of Papers, American Chemical Society, Division of Fuel Chemistry, Journal Name: Preprints of Papers, American Chemical Society, Division of Fuel Chemistry Journal Issue: 3 Vol. 40; ISSN 0569-3772; ISSN ACFPAI
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
66 PHYSICS
BITUMINOUS COAL
CHARS
POROSITY
SMALL ANGLE SCATTERING
SUBBITUMINOUS COAL
SURFACE AREA