Transition metal catalysis of hydrogen shuttling in coal liquefaction: Quarterly technical progress report, 3/1/86-5/31/86. [1,4-dihydrobenzene, 1,4-dihydronaphthalene, 9,10-dihydroanthracene]
The ultimate objective of this research is to uncover new catalytic processes for the liquefaction of coal and for upgrading coal-derived fuels by removing undesirable organosulfur, organonitrogen and organooxygen constituents. Basic to both the liquefaction of coal and the purification of coal liquids is the transfer of hydrogen from such sources as dihydrogen, metal hydrides or partially reduced aromatic hydrocarbons to the extensive aromatic rings in coal itself or to aromatic sulfides, amines and ethers. Accordingly, this study is exploring how such crucial hydrogen-transfer processes might be catalyzed by soluble, low-valent transition metal complexes under moderate conditions of temperature and pressure. During the seventh quarter of this three-year grant the following aspects of this study were emphasized: (1) model studies of hydrogen shuttling were continued by examining the disproportionation reactions occurring individually with 1,4-dihydrobenzene, 1,4-dihydronaphthalene and 9,10-dihydroanthracene, as catalyzed by nickel(0) complexes; (2) attempted cleavages of benzylic carbon-carbon bonds by nickel(0) complexes were undertaken; (3) hydrogen-transfer reactions between the aforementioned dihydroaromatics and carbocyclic and heterocyclic acceptors, such anthracene, phenanthrene, pyrene and quinoline, were undertaken in the presence of nickel(0) catalysts; (4) further attempts were made to purify and isolate crystals of a homogeneous dehydrogenation agent formed from LiAlH/sub 4/ and Bipy.Ni.Cod, namely LiAlH/sub 2/.Ni.Bipy; and (5) evidence was sought that Lewis acids, such as MeAlCl/sub 2/, might function as cocatalysts with nickel(0) for hydrogen shuttling processes.
- Research Organization:
- State Univ. of New York, Binghamton (USA)
- DOE Contract Number:
- FG22-84PC70786
- OSTI ID:
- 7055579
- Report Number(s):
- DOE/PC/70786-T7; ON: DE87003335
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ANTHRACENE
HYDROGEN TRANSFER
AROMATICS
OXIDATION
REDUCTION
COAL LIQUEFACTION
CATALYSTS
COAL LIQUIDS
DENITRIFICATION
DESULFURIZATION
CONDENSED AROMATICS
NICKEL COMPLEXES
CATALYTIC EFFECTS
PHENANTHRENE
PYRENE
QUINOLINES
ALUMINIUM HYDRIDES
BIPYRIDINES
LEWIS ACIDS
LITHIUM HYDRIDES
ORGANOMETALLIC COMPOUNDS
RESEARCH PROGRAMS
STRUCTURAL MODELS
ALKALI METAL COMPOUNDS
ALUMINIUM COMPOUNDS
AZAARENES
AZINES
CHEMICAL REACTIONS
COMPLEXES
FLUIDS
HETEROCYCLIC COMPOUNDS
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LIQUEFACTION
LIQUIDS
LITHIUM COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PYRIDINES
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPLEXES
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
400201 - Chemical & Physicochemical Properties