Patent ID: 6140547
Filing Date: 2000-10-31
Classification: C07C,C10G

Abstract:
A process for converting at least one feed hydrocarbon selected from the group consisting of alkanes containing in the range of from about 4 carbon atoms to about 10 carbon atoms per molecule and cycloalkanes containing in the range of from about 5 carbon atoms to about 10 carbon atoms per molecule to at least one product hydrocarbon isomer, wherein an isomerization feed stream, which comprises said at least one feed hydrocarbon and hydrogen, is contacted in an isomerization zone at effective isomerization conditions with a catalyst, wherein deactivation of said catalyst occurs in said isomerization zone, and further wherein said process comprises the presence of an additive in said isomerization feed stream in a concentration in the range of from about 0.01 part by weight of said additive per billion parts by weight of said at least one feed hydrocarbon (about 0.01 ppb additive) to about 300 parts by weight of said additive per billion parts by weight of said at least one feed hydrocarbon (about 300 ppb additive) and further wherein said additive comprises a metal chloride compound selected from the group consisting of aluminum chloride, antimony trichloride, antimony pentachloride, tin (II) chloride, tin (IV) chloride, titanium (III) chloride, titanium (IV) chloride, zinc chloride, and mixtures thereof.