Separation of asphaltenes using high-resolution supercritical-fluid chromatography. Progress report, September 1-November 30, 1982. [Heterocyclic aromatic nitrogen compounds]

Technical Report · Fri Jan 01 04:00:00 EST 1982

OSTI ID:6863565

Jackson, W P; Fjeldsted, J C; Richter, B E; Campbell, R W; Lee, M L

Progress was made in three areas during the period of September through November. The para-tolyl phase reported on briefly in the previous quarterly report was more extensively developed and evaluated. Carbon dioxide and nitrous oxide were examined as mobile phases in connection with the development of the ionization-detector supercritical-fluid chromatography (SFC) system. Hydrocarbons, heterocyclic aromatics, and thermally labile free-radical initiators were all successfully chromatographed at near ambient temperatures. Some modifications to the static-coating procedure yielded more reproducible, efficient columns and evaluation of the effects of SFC conditions on crosslinked phases yielded some new insights into the necessary criteria for SFC stationary phases and cross-linking procedures. 13 figures, 2 tables.

• Research Organization: Brigham Young Univ., Provo, UT (USA). Dept. of Chemistry
• DOE Contract Number: FG22-81PC40809
• OSTI ID: 6863565
• Report Number(s): DOE/PC/40809-T4; ON: DE83004017
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
& Peat-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
ALKANES
AMBIENT TEMPERATURE
AROMATICS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL ANALYSIS
CHROMATOGRAPHY
COAL TAR
DATA
EXPERIMENTAL DATA
GAS CHROMATOGRAPHY
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
INFORMATION
NITROGEN COMPOUNDS
NITROGEN OXIDES
NITROUS OXIDE
NUMERICAL DATA
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SEPARATION PROCESSES
TAR
TIME DEPENDENCE