Separation of pyridine extracts of Zonguldak bituminous coal by surface-modified silica gel liquid chromatography columns

Journal Article · Sat Jan 01 04:00:00 EST 2000 · Energy Sources

OSTI ID:20014029

Seferinoglu, M; Yueruem, Y

Polyethylene glycol (PEG) 20M-modified silica gel stationary phases were investigated in the separation of pyridine extract of Zonguldak bituminous coal. Silica gel surfaces were made less acidic by the basic PEG 20M. The number of theoretical plates decreased substantially in surface-modified silica gel columns for all model compounds. Resolution decreased as the percentage of PEG charged on silica gel was increased for any combination of the two model compounds. Pyridine extract was separated into n-heptane, toluene, and methanol eluates using the prepared columns. As the percentage of PEG 20M on the silica gel stationary phase was increased, yields of n-heptane eluates were increased, toluene eluates stayed almost unchanged, and methanol eluates decreased. Decrease in the methanol evaluates was in favor of the n-heptane eluates. The fractions produced by this method contain constituents that can be reformed to obtain environmentally acceptable liquid fuels.

• Research Organization: Hacettepe Univ., Ankara (TR)
• OSTI ID: 20014029
• Journal Information: Energy Sources, Journal Name: Energy Sources Journal Issue: 1 Vol. 22; ISSN 0090-8312; ISSN EGYSAO
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
40 CHEMISTRY
BITUMINOUS COAL
COAL EXTRACTS
LIQUID COLUMN CHROMATOGRAPHY
POLYETHYLENE GLYCOLS
SILICA GEL
STRUCTURAL CHEMICAL ANALYSIS