Separation method for coal-derived solids and heavy liquids

Journal Article · Fri Jul 01 04:00:00 EDT 1977 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac50016a041· OSTI ID:6216460

Schiller, J E; Mathiason, D R

A rapid, simple chromatographic procedure was developed to fractionate coal-derived solids and liquids for subsequent analysis by gas chromatography and mass spectrometry. The sample is dissolved in chloroform or tetrahydrofuran and is then preadsorbed on neutral alumina (activity l), and eluted with hexane, toluene, two fractions of chloroform, and a 9:1 mixture of tetrahydrofuran-ethanol. The principal compound types eluted in each fraction, respectively, are: saturated hydrocarbons, aromatic hydrocarbons and benzofurans, ethers, nitrogen compounds, and hydroxyl compounds. Vaporization of the solvent leaves the isolated fraction for further analysis. The procedure was applied to a wide variety of coal-derived solids and liquids including coal liquefaction products, coal tar distillates, solvent refined coal, solvent refined lignite, and tar from a slagging gasifier. In all cases studied, the same compound types were observed in the fractions obtained and the behavior on the columeatere integrated closely with MS or GC/MS. These trapped compounds are believed to be products and residuals of the original coalificans towards a more compl features displaying 'wave-like' and 'fork-like' shapes.

• OSTI ID: 6216460
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 49:8; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
ALKANES
AROMATICS
BENZOFURANS
CHEMICAL ANALYSIS
CHLORINATED ALIPHATIC HYDROCARBONS
CHLOROFORM
CHROMATOGRAPHY
COAL LIQUIDS
COAL TAR
ETHERS
FLUIDS
FUELS
FURANS
GAS CHROMATOGRAPHY
HALOGENATED ALIPHATIC HYDROCARBONS
HETEROCYCLIC COMPOUNDS
HEXANE
HYDROCARBONS
HYDROXYL RADICALS
LIQUIDS
MASS SPECTROSCOPY
NITROGEN COMPOUNDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
RADICALS
SEPARATION PROCESSES
SOLIDS
SOLVENT-REFINED COAL
SPECTROSCOPY
TAR
TETRAHYDROFURAN
TOLUENE