COMPOSITIONAL AND PHYSICAL PROPERTIES OF ASPHALT FRACTIONS OBTAINED BY SUPERCRITICAL AND SOLVENT EXTRACTION. IN: AMERICAN CHEMICAL SOCIETY SYMPOSIUM ON CHEMISTRY AND CHARACTERIZATION OF ASPHALTS, AUGUST 1990, WASHINGTON, D.C.

Supercritical extraction with n-pentane was used to separate asphalt into distinct fractions having different physical and compositional properties. A pilot-scale supercritical unit capable of processing thirty kilograms of asphalt per day was designed and fabricated specifically for asphalt fractionation. The operation and design of the unit is similar to the ROSE (Residuum Oil Supercritical Extraction) process of Kerr-McGee. This unit was used to separate asphalt into five different fractions ranging from soft greases to asphaltene-like solids. Supplemental room-temperature solvent fractionation of the hardest of these five using binary pentane/cyclohexane mixtures produces a total of eight fractions. A variety of analyses provide chemical and physical characterization of the fractions. These include: (1) Corbett Fractionation, (2) FT-IR spectroscopy, (3) size exclusion chromatography, (4) nickel and vanadium atomic absorption, and (5) viscosity.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08843759
• Corporate Authors:

  Marcel Dekker, Incorporated

  270 Madison Avenue
  New York, NY  United States  10016
• Authors:
  • Stegeman, J R
  • Kyle, A L
  • Burr, B L
  • Jemison, H B
  • Davison, R R
  • Glover, C J
  • Bullin, J A
• Publication Date: 1992-5

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 767-794
• Serial:
  • FUEL SCIENCE & TECHNOLOGY INTERNATIONAL
  • Volume: 10
  • Issue Number: 4
  • Publisher: Marcel Dekker, Incorporated
  • ISSN: 0884-3759

Subject/Index Terms

• TRT Terms: Asphalt; Asphalt content; Chromatography; Grease; Physical properties; Solvents; Tests; Viscosity
• Old TRIS Terms: Atomic absorption; Solvent extraction tests
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00626084
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 4 1993 12:00AM