Part I. Coal hydrogenation via bonding of metallic compounds to coal; Part II. Solubilization of Illinois bituminous coal - the critical importance of methylene group cleavage. Final report

Technical Report · Thu Jan 01 00:00:00 EST 1981

OSTI ID:6328237

Progress reports are presented for the following two areas of study: Coal Hydrogenation via Bonding of Metallic Compounds to Coal; and Solubilization of Illinois Bituminous Coal - the Critical Importance of Methylene Group Cleavage. In the first report, data for the hydrogenation of Elkhorn coal at 390/sup 0/C with the initial pressure of 13.8 MPa hydrogen and with various catalysts (stannous chloride and complexes of cobalt and tin), and solvents (decalin and tetralin) are presented in tabular form and results are discussed. To obtain more accurate information concerning the role of the catalyst and the mechanism of hydrogenation, model compounds of coal, polystyrene beads were tin-bonded and tin-impregnated, then hydrogenated under various temperatures, pressures, and with either decalin or tetralin. These data are also tabulated and discussed. Results show both hydrogen and the tin catalyst are necessary for liquefaction at 390/sup 0/C, and under comparable conditions, bonded tin gave greater liquefaction than impregnated tin but with considerably greater hydrogen consumption. In the coal solubilization study, solubilization by hydroliquefaction and by chemical reduction with potassium in tetrahydrofuran seems to indicate that initial degradation of coal by both techniques proceeds by ether cleavage and that further degradation is achieved in both cases by methylene bridge attack. The NMR studies on hydroliquefaction products indicate that Illinois bituminous coal is structurally quite homogeneous since the product composition is largely independent of the degree of solubilization.

• Research Organization: Cincinnati Univ., OH (USA). Dept. of Chemistry
• DOE Contract Number: AS01-76ET10517
• OSTI ID: 6328237
• Report Number(s): DOE/ET/10517-T1; ON: DE81027562
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
BITUMINOUS COAL
CHEMICAL REACTIONS
HYDROGENATION
STRUCTURAL CHEMICAL ANALYSIS
COBALT COMPLEXES
CATALYTIC EFFECTS
POLYSTYRENE
POTASSIUM
TIN CHLORIDES
TIN COMPLEXES
CARBONYLS
COAL LIQUEFACTION
DECALIN
HIGH TEMPERATURE
NMR SPECTRA
REDUCTION
RESEARCH PROGRAMS
TETRAHYDROFURAN
TETRALIN
ALKALI METALS
ALKANES
AROMATICS
BLACK COAL
CARBONACEOUS MATERIALS
CHLORIDES
CHLORINE COMPOUNDS
COAL
COMPLEXES
CYCLOALKANES
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
FURANS
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
LIQUEFACTION
MATERIALS
METALS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYMERS
POLYOLEFINS
POLYVINYLS
SPECTRA
SYNTHETIC MATERIALS
THERMOCHEMICAL PROCESSES
TIN COMPOUNDS
TIN HALIDES
TRANSITION ELEMENT COMPLEXES
010403* - Coal & Coal Products- Hydrogenation- (-1987)
010600 - Coal
Lignite
& Peat- Properties & Composition