C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/227
C10G 29/12 (2006.01)
Patent
CA 1172195
ABSTRACT OF THE DISCLOSURE A method is disclosed for the selective removal of basic nitrogen compounds (BNC) from natural and synthetic hydrocarbon feedstocks, which method comprises mixing the feedstock oil with a nonaqueous solution of anhydrous non- polymeric Group IVb, Group Vb, Group VIb, Group VIIb, the non-noble (iron group) metals of Group VIII. copper, zinc, cadmium, and mercury halides, except chlorides, or tetrafluoroborates, complexed with non-aqueous polar sol- vents under conditions of agitation and mild heating whereby the basic nitrogen compounds exchange with the polar sol- vent to complex with the above-recited metal halides and metal tetrafluoroborates. The oil is then decanted to separate it from the metal halides: BNC complexes and the decantate washed with a polar solvent, which preferably in- cludes water, and dried. The basic nitrogen compound-metal halide or metal tetrafluoroborate complex dissolves in the polar solvent, and that which is in the oil is removed by the polar solvent wash. The preferred polar solvent for the wash step is water. The anhydrous nonpolymeric metal halide or metal tetrafluoroborate-nonaqueous polar solvent complex can be used as such, or they can be impregnated onto a support material.
395897
Borden Ladner Gervais Llp
Imperial Oil Limited
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