Hydrocarbon conversion with low-sodium silicalite
AssigneeChevron Research Company
InventorStephen J. Miller
Life of this patent
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Abstract
Hydrocarbon conversion in the presence of a low-sodium form crystalline silicate converts normal and slightly branched paraffins, at least in part, to olefins.
Claims12
A process for producing olefins from normal paraffins, slightly branched paraffins, and mixtures thereof, comprising contacting a feed which comprises said paraffins with silicalite containing less than about 0.1 weight percent sodium, and producing an effluent of greater olefin content than said feed.
The process of claim wherein said contacting is conducted in the presence of hydrogen at a hydrogen to hydrocarbon ratio of from about 350 to about 3650 liters hydrogen/liter hydrocarbon.
A process for producing olefins from normal paraffins, slightly branched paraffins, and mixtures thereof, comprising contacting a feed which comprises said paraffins with a composition substantially free of hydrogenation activity comprising silicalite containing less than about 0.1 weight percent sodium composited in a matrix which is substantially free of cracking activity, said contacting occurring at a temperature from about 285.degree. to about 595.degree. C., a pressure from about 14 to about 205 bar, and a hydrogen to hydrocarbon volume ratio from about 350 to about 3650 liters hydrogen/liter hydrocarbon;
- and producing an effluent of greater olefin content than said feed, wherein said olefin content is at least 10 weight percent of converted feed.
Dependencies are inferred from the claim text.