Institut Francais Du Pe'trole

H El Olivier

Yves Chauvin

Alain Forestiere

Marie-Claire Marion

Patrick Sarrazin

Jean-Luc Nocca

An internal combustion engine fuel is produced from a mixture of hydrocarbons comprising olefinic hydrocarbons containing 5 to 8 carbon atoms characterized in that it is produced by a process comprising a) a catalytic etherification step for at least a portion of the etherifiable olefins contained in said hydrocarbon mixture, using at least one alcohol containing 1 to 4 carbon atoms, the quantity of alcohol employed being such that the alcohol:etherifiable olefin molar ratio is at least 1:1, and b) a water washing step for the ether-containing product before recovery as a fuel.

Fuel produced by a process comprising etherification of a hydrocarbon

The invention concerns a process for dimerization, co-dimerization and oligomerization of olefins, in particular .alpha.-olefins, with a catalytic composition resulting from a mixing at least one tungsten oxyhalide, at least one aryl isocyanate of diisocyanate, and at least one alkylaluminum halide.

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Rueil Malmaison, France

H El Olivier