Development of novel fluorine combustion procedures for elemental coal analysis

Thesis/Dissertation · Wed Jan 01 04:00:00 EST 1986

OSTI ID:7248493

Rimkus, W V

A novel system for elemental analysis was developed, whereby an organic species (coal) is completely combusted in a high pressure fluorine atmosphere. The excess fluorine is removed by a reduction with elemental mercury, and the remaining gas (typically composed of varying amounts of carbon tetrafluoride, carbonyl fluoride, carbon dioxide, nitrogen, oxygen, and hydrogen fluoride) is analyzed with a mass spectrometer. The combustion data is then compared to a model, constructed from a similar gas mixture of known composition. Data from the model is used to establish the relative amounts of each component present in the present in the combustion mixture. From the relative amounts of each component present, the ratios of oxygen to carbon, nitrogen to carbon, and sulfur to carbon are calculated. The method also includes the gravimetric determination of hydrogen using sodium fluoride. Hydrogen is recovered as the bifluoride.

• Research Organization: Loyola Univ., Chicago, IL (USA)
• OSTI ID: 7248493
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
CARBON
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
COAL
COMBUSTION PRODUCTS
ELEMENTS
ENERGY SOURCES
FLUORINE
FOSSIL FUELS
FUELS
HALOGENS
HYDROGEN
MASS SPECTROSCOPY
MATERIALS
MATHEMATICAL MODELS
NITROGEN
NONMETALS
OXYGEN
QUANTITY RATIO
SAMPLE PREPARATION
SPECTROSCOPY
SULFUR