Fuel additives
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United States of America Patent
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Jan 14, 1997
Grant Date -
N/A
app pub date -
May 17, 1995
filing date -
Aug 2, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The emission of particulates and unburnt hydrocarbons in the exhaust gas emissions from liquid hydrocarbon fuels, especially diesel fuels and fuel oils is reduced by incorporating into the fuel an effective amount of an oil-soluble alkali, alkaline earth or rare earth complex of the formula: M(R).sub.m.nL wherein M is the metal cation of valency m, R is the residue of an organic compound RH containing an active hydrocarbon atom, preferably a beta-diketone, n is an integer usually 1, 2, 3 or 4, and L is an organic donor ligand molecule, i.e., a Lewis base.
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