Catalytic hydrogenation of high volatile bituminous coal and various coal extracts: Final report for 1986/1987 SOMED Project
Model compounds, naphthalene, quinolines, and isoquinoline (possible extracts of coal) were selectively hydrogenated to 1,2,3,4-tetrahydro products by a Ziegler type catalyst (I) made of cobalt stearate and triethyl aluminum (1:2 molar ratio) in hexane solvent and temperatures as low as 22/degree/C and hydrogen pressure of 700-800 psi. It was established that a hydrogen pressure greater than 300 psi is crucial for hydrogenation to occur. For instance, at a pressure of 300 psi, only 5% reduction of naphthalene was observed with the rest of the starting material remaining intact. The important feature of this Ziegler catalyst is that it works best at low temperatures, moderate pressures and short reaction times, most unusual for a Ziegler catalyst. The catalyst, however, failed to bring about any reduction with such compounts as 8-nitro-2-methylquinoling, 4-chloro-2-methylquinoline, phenol, and dibenzothiophene. These failures are not surprising as nitro compounds are known to interact with and deactivate similar catalysts and homogeneous transition metal catalysts usually fail in the present of sulfur containing compounds. 23 refs., 2 tabs.
- Research Organization:
- Alabama Univ., University (USA). School of Mines and Energy Development
- OSTI ID:
- 5043690
- Report Number(s):
- NP-8010872; ON: TI88010872
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COAL
HYDROGENATION
COAL EXTRACTS
CATALYSTS
SOLVENT-REFINED COAL
BITUMINOUS COAL
CATALYTIC EFFECTS
COBALT
NAPHTHALENE
NUCLEAR MAGNETIC RESONANCE
PRESSURE DEPENDENCE
PROGRESS REPORT
QUINOLINES
STRUCTURAL MODELS
AROMATICS
AZAARENES
AZINES
BLACK COAL
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CONDENSED AROMATICS
DOCUMENT TYPES
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
MAGNETIC RESONANCE
MATERIALS
METALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PYRIDINES
RESONANCE
TRANSITION ELEMENTS
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction