Heteroatom speciation in coal liquefaction via FT-IR coupled with liquid chromatography. Quarterly progress report, July 1, 1982-September 30, 1982

Technical Report · Wed Dec 01 04:00:00 EST 1982

OSTI ID:6896592

Taylor, L T

It is interesting to note that the eluted samples from the microbore column are easily detected by FTIR as can be seen by the reasonable signal-to-noise ratio of the file spectra. The solvent consumption is particularly appealing, being less than 1.0 mL total volume per chromatogram. This corresponds to a ten-fold decrease in solvent consumption over the analytical scale, and nearly a fifty-fold decrease over the semi-preparative scale. The actual time of the separation is virtually the same in all cases if column length is considered. HPLC-FTIR can be a valuable tool in complex mixture analysis. Limitations on solvent windows can be partially overcome by decreasing the cell pathlength if the component concentrations can be increased. This study has shown the feasibility of microbore HPLC-FTIR as a routine tool, which allows the chromatographer to use solvents with large infrared windows which were previously not considered because of their high cost. As the state-of-the-art of microbore column technology increases, the better separations that are expected will be readily amenable to FTIR detection. Better detection limits should be obtainable with longer pathlength/lower volume cells as well as employment of more sensitive FTIR detectors which are generally employed in GC-FTIR.

• Research Organization: Virginia Polytechnic Inst. and State Univ., Blacksburg (USA)
• DOE Contract Number: FG22-81PC40799
• OSTI ID: 6896592
• Report Number(s): DOE/PC/40799-T4; ON: DE83004577
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010600 -- Coal
Lignite
& Peat-- Properties & Composition
CHROMATOGRAPHY
COAL LIQUEFACTION
COAL LIQUIDS
FLUIDS
FOURIER TRANSFORMATION
FRACTIONATION
INFRARED SPECTRA
INTEGRAL TRANSFORMATIONS
LIQUEFACTION
LIQUID COLUMN CHROMATOGRAPHY
LIQUIDS
SEPARATION PROCESSES
SPECTRA
THERMOCHEMICAL PROCESSES
TRANSFORMATIONS