Polycyclic aromatics from hydrogenation products (in German)
Technical Report
·
OSTI ID:7220532
The products of catalytic high-pressure hydrogenation of petroleum, tar, or coal included many multi-ringed cyclic hydrocarbons, each individual one present in fairly small amounts. Many of them were present in largely hydrogenated form, whereas others were present as aromatic compounds. For instance, at temperatures around 450/sup 0/C and pressures over 200 atm, the equilibrium between hydrogenated and aromatic forms was shifted toward hydrogenated forms for low-molecular-weight cyclic hydrocarbons and toward aromatic forms for higher-molecular-weight cyclic hydrocarbons. To shift the equilibrium toward aromatic forms even of the low-molecular-weight cyclics, one could raise temperatures even higher, and lower hydrogen pressure to around 50 atm. Also, aromatic content of some fractions could be raised by vacuum processing with selenium. Polycyclic aromatics could be isolated from other products of the process by vacuum fractional distillation and crystallization. This report listed physical and chemical properties and crystal forms for several such polycyclic aromatics. The most stable compounds seemed to be pyrene, a four-ringed compound, and coronene, a seven-ringed compound. Many of the compounds had been first isolated and identified at I. G Farbenindustrie.
- OSTI ID:
- 7220532
- Report Number(s):
- TOM-1-18-33
- Country of Publication:
- United States
- Language:
- German
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010403 -- Coal & Coal Products-- Hydrogenation-- (-1987)
010405 -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010600* -- Coal
Lignite
& Peat-- Properties & Composition
AROMATICS
BENZOPYRENE
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHRYSENE
COAL
COAL LIQUEFACTION
CONDENSED AROMATICS
CRYSTAL STRUCTURE
CRYSTALLIZATION
DISTILLATION
ELEMENTS
ENERGY SOURCES
FLUORENE
FOSSIL FUELS
FUELS
HIGH PRESSURE
HIGH TEMPERATURE
HYDROCARBONS
HYDROGENATION
LIQUEFACTION
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PRODUCTION
PYRENE
SELENIUM
SEMIMETALS
SEPARATION PROCESSES
TAR
THERMOCHEMICAL PROCESSES
010403 -- Coal & Coal Products-- Hydrogenation-- (-1987)
010405 -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010600* -- Coal
Lignite
& Peat-- Properties & Composition
AROMATICS
BENZOPYRENE
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHRYSENE
COAL
COAL LIQUEFACTION
CONDENSED AROMATICS
CRYSTAL STRUCTURE
CRYSTALLIZATION
DISTILLATION
ELEMENTS
ENERGY SOURCES
FLUORENE
FOSSIL FUELS
FUELS
HIGH PRESSURE
HIGH TEMPERATURE
HYDROCARBONS
HYDROGENATION
LIQUEFACTION
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PRODUCTION
PYRENE
SELENIUM
SEMIMETALS
SEPARATION PROCESSES
TAR
THERMOCHEMICAL PROCESSES