Fuel compositions comprising tetramethylcyclohexane
AssigneeAmyris Biotechnologies, Inc.
InventorsJason A. Ryder, Karl Fisher
Life of this patent
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Abstract
A fuel composition comprises at least a tetramethylcyclohexane and a fuel component. The tetramethylcyclohexane can be used as a fuel component or as a fuel additive in the fuel composition. The fuel composition may further comprise a conventional fuel component selected from a petroleum-based fuel component such as diesel fuel, jet fuel, kerosene or gasoline; or a coal-based fuel component. Methods of making and using the fuel composition are also disclosed.
Claims52
A fuel composition comprising:
- (a) a tetramethylcyclohexane in an amount of at least 5 wt. %, based on the total weight of the fuel composition;
- and
- (b) a fuel component.
A method of making a fuel composition comprising contacting pinene with hydrogen in the presence of a hydrogenation catalyst to form at least a tetramethylcyclohexane.
A vehicle comprising an internal combustion engine;
- a fuel tank connected to the internal combustion engine;
- and a fuel composition in the fuel tank, wherein the fuel composition comprises at least 5 wt. % of a tetramethylcyclohexane, based on the total weight of the fuel composition, and a fuel component, and wherein the fuel composition is used to power the internal combustion engine.
A vehicle comprising an internal combustion engine;
- a fuel tank connected to the internal combustion engine;
- and a fuel composition in the fuel tank, wherein the fuel composition is prepared by contacting pinene with hydrogen in the presence of a hydrogenation catalyst, and wherein the fuel composition is used to power the internal combustion engine.
A method of making a fuel composition comprising:
- (a) contacting a cell capable of making pinene with a sugar under conditions suitable for making pinene;
- (b) converting the pinene to pinane;
- (c) converting the pinane to at least a tetramethylcyclohexane;
- and
- (d) mixing the tetramethylcyclohexane with a fuel component to make the fuel composition.
A method of making an RBOB comprising mixing a gasoline with a fuel composition comprising a tetramethylcyclohexane having a quaternary carbon atom in the cyclohexane ring, wherein the RBOB has a Reid vapor pressure from about 7.0 psi to about 15.0 psi, and wherein the amount of the amount of the tetramethylcyclohexane is from about 1 wt. % to about 50 wt. %, based on the total weight of the fuel composition.
A fuel tank containing a fuel composition, wherein the fuel composition comprises at least 5 wt. % of a tetramethylcyclohexane, based on the total weight of the fuel composition, and a fuel component.
A fuel composition comprising a gasoline and at least one tetramethylcyclohexane having a quaternary carbon atom in the cyclohexane ring, wherein the amount of the tetramethylcyclohexane is from about 1 wt. % to about 50 wt. %, based on the total weight of the fuel composition.
Dependencies are inferred from the claim text.