Production of high-octane gas blending stock
AssigneeResearch Association for Utilization of Light Oil
InventorsIsao Suzuki, Kazuo Hirabayashi, Tadami Kondoh, Hiroaki Nishijima
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Abstract
A high-octane gasoline is produced by the conversion of a light hydrocarbon containing C.sub.2 -C.sub.7 paraffins and/or C.sub.2 -C.sub.7 olefins using a crystalline aluminogallosilicate catalyst of the formula: aM.sub.2/n O bAl.sub.2 O.sub.3 Ga.sub.2 O.sub.3 cSiO.sub.2 dH.sub.2 O wherein M is a metal selected from an alkali metal, an alkaline earth metal and a mixture thereof, n is the valence of said metal, a is a positive number of (b+1).+-.3.0, b is between 1 and 6, c is between 80 and 490, d is between 1 and 200, c/(b+1) is between 40 and 70, and c/b is between 46.7-140.
Claims12
A process for the preparation of a high-octane gasoline, which comprises contacting a light hydrocarbon containing one or more paraffins and/or olefins, each having 2 to 7 carbon atoms, with a crystalline silicate catalyst, characterized in that said catalyst comprises an aluminogallosilicate with its skeleton comprised of SiO .sub.4, AlO.sub.4 and GaO.sub.4 tetrahedra, that said alumino-gallosilcate has the following formula:
- aM.sub.2/n O.multidot.bAl.sub.2 O.sub.3 .multidot.Ga.sub.z O.sub.3 .multidot.cSiO.sub.2 .multidot.dH.sub.z O
- wherein M is a metal selected from an alkali metal, an alkaline earth metal and a mixture thereof, n is the valence of said metal, a is a positive number of (b +1).sup.+ 3.0, b is between 1 and 6, c is between 80 and 490, d is between 1 and 200, c/(b+1) is between 40 and 70, and c/b is between 46.7-140, and that said contacting is performed at a temperature of 350.degree.-650 .degree. C. under a hydrogen partial prssure of not higher than 5 kg/cm.sup.2.
Dependencies are inferred from the claim text.