Chemistry of hydrocarbon compounds – Plural serial diverse syntheses – To produce unsaturate
Patent
1994-04-08
1996-03-12
Achutamurthy, Ponnathapura
Chemistry of hydrocarbon compounds
Plural serial diverse syntheses
To produce unsaturate
585310, 585329, 585330, 585332, 585531, 585533, 585671, C07C 208, C07C 5373
Patent
active
054988110
ABSTRACT:
Polymeric fuels are produced from saturated C.sub.4 hydrocarbons by a process comprising:
(A) dehydroisomerizing a gas mixture comprising predominantly of n-butane and hydrogen in a catalytic reactor containing a catalyst (a) of platinum supported on alumina, whose surface is coated with silica, and, optionally, a solid acidic catalyst (b) selected from the group consisting of alumina, whose surface is coated with silica, and Boralite B, with an effluent being obtained which comprises a mixture of predominantly of unreacted n-butane, butenes and isobutene, all of which components of the mixture have a carbon atom content less than 5;
(B) separating the mixture of olefins and parafins from hydrogen and aromatic byproducts; and
(C) oligomerizing said mixture in the presence of a catalyst consisting of amorphous silica-alumina gel, as determined by X-rays, having a silica:alumina molar ratio within the range of 30:1 to 500:1, with a surface area of from 500 to 1000 m.sup.2 /g, and a pore diameter substantially within the range of from 1 to 3 nm, thereby producing a gasoline material boiling within the range of 80.degree. to 175.degree. C., a jet fuel boiling within the range of 175.degree.-300.degree. C. and a gas oil boiling at temperatures greater than 300.degree. C.
REFERENCES:
patent: Re34189 (1993-03-01), Harandi et al.
patent: 5275995 (1994-01-01), Bellussi et al.
Peratelo Stefano
Perego Carlo
Achutamurthy Ponnathapura
Enichem Synthesis S.p.A.
Eniricerche S.p.A.
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