Characterization of coal-derived liquids and other fossil fuel related materials employing mass spectrometry. Quarterly report, September 29--December 29, 1978

Technical Report · Mon Jan 29 04:00:00 EST 1979

DOI:https://doi.org/10.2172/6121708· OSTI ID:6121708

Scheppele, S. E.

The standard electron multiplier of the CEC 21-110B mass spectrometer was replaced with a Hamamatsu electron multiplier. The change allowed the electron multiplier to be operated at a higher gain with about the same noise level on the output signal as with the standard electron multiplier operating at lower gains. The dynamic resolution of the mass spectrometer was determined when the static resolution was set for a value of 13,000. Field-ionization mass spectra, FI/MS, were obtained for the following saturate fractions: Arco Shale Concentrates, 200-325/sup 0/C, 325-425/sup 0/C, and 425/sup 0/C+; South Swan Hills Concentrate 370-535/sup 0/C; and Utah Crude Oil No. 72054. The molecular ion intensities in the FI/MS of each sample were converted into carbon number distributions as a function of Z(H). The weight percents across each Z(H) series were summed to obtain total weight percents as a function of saturate type. Steps in completing the interfacing of the Nova 3/12 data acquisition system to the comparator-microdensitometer have been taken. An outline of the steps which have been completed and those which will be completed to implement the interfacing is given. Also preliminary designs are given in this report for the interface circuitry and the interface software. High- and low-resolution field-ionization mass spectral data were acquired for 19 monoaromatic, diaromatic, and polyaromatic polar concentrations. These samples were analyzed for the Separations and Characterization Group at the Bartlesville Energy Technology Center. Also acquisition of high-resolution field-ionization mass spectral data for the remaining asphaltene fractions from the COED coal liquid was completed.

• Research Organization: Oklahoma State Univ., Stillwater (USA). Dept. of Chemistry
• OSTI ID: 6121708
• Report Number(s): FE-2537-9
• 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
02 PETROLEUM
023000 -- Petroleum-- Properties & Composition
04 OIL SHALES AND TAR SANDS
040500 -- Oil Shales & Tar Sands-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104 -- Spectral Procedures-- (-1987)
ASPHALTENES
ASPHALTS
BITUMENS
CHEMICAL ANALYSIS
COAL LIQUIDS
DATA ACQUISITION SYSTEMS
ENERGY SOURCES
FOSSIL FUELS
FRACTIONATION
FUELS
MASS SPECTROMETERS
MASS SPECTROSCOPY
MEASURING INSTRUMENTS
MINERAL OILS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
QUANTITATIVE CHEMICAL ANALYSIS
SEPARATION PROCESSES
SHALE OIL
SPECTROMETERS
SPECTROSCOPY
SYNTHETIC FUELS
SYNTHETIC PETROLEUM
TAR