Compositions comprising undecamantanes and processes for their separation
AssigneeChevron U.S.A. Inc.
InventorsJeremy E. Dahl, Robert M. Carlson
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Abstract
Disclosed are compositions comprising one or more undecamantanes. Specifically disclosed are compositions comprising 25 to 100 weight percent of one or more undecamantanes. Also disclosed are novel processes for the separation and isolation of undecamantane components into recoverable fractions from a feedstock containing at least a higher diamondoid component which contains one or more undecamantane components.
Claims42
A composition comprising diamondoids wherein at least about 25 weight percent of the diamondoids are one or more undecamantane components.
A composition comprising at least about 10% by weight of one or more undecamantane components.
An enriched undecamantane component.
A process for recovering a composition enriched in one or more undecamantane components which process comprises:
- a. selecting a feedstock comprising recoverable amounts of undecamantane components and nonundecamantane components;
- b. removing from the feedstock a sufficient amount of nonundecamantane components having boiling points less than the lowest boiling point undecamantane component under conditions to form a treated feedstock enriched in undecamantane components which can be recovered;
- c. recovering a composition enriched in one or more undecamantane components from said treated feedstock formed in b) above with one or more additional separation techniques selected from the group consisting of chromatographic techniques, thermal diffusion techniques, zone refining, progressive recrystallization and size separation techniques.
A process for recovering a composition enriched in undecamantane components which process comprises:
- a. selecting a feedstock comprising recoverable amounts of undecamantane components and nonundecamantane components including nondiamondoid components;
- b. removing from the feedstock a sufficient amount of nonundecamantane components having a boiling pointless than the lowest boiling point undecamantane component under conditions to form a treated feedstock enriched in undecamantane components which can be recovered;
- c. thermally degrading said treated feedstock to pyrolyze at least a sufficient amount of nondiamondoid components therefrom under conditions to form a thermally treated feedstock retaining recoverable amounts of undecamantane;
- d. recovering a composition enriched in one or more undecamantane components from said thermally treated feedstock formed in c) above with one or more additional separation techniques selected from the group consisting of chromatographic techniques, thermal diffusion techniques, zone refining, progressive recrystallization and size separation techniques.
A process for recovering a composition enriched in one or more undecamantane components which process comprises:
- a. selecting a feedstock comprising recoverable amounts of undecamantane components and nonundecamantane components including nondiamondoid components;
- b. thermally degrading said feedstock to pyrolyze at least a sufficient amount of nondiamondoid components therefrom under conditions to provide a thermally created feedstock retaining recoverable amounts of undecamantane;
- c. removing from the thermally treated feedstock a sufficient amount of nonundecamantane components having a boiling point less than the lowest boiling point of undecamantane component under conditions to form a treated feedstock enriched in undecamantanes components which can be recovered;
- d. recovering a composition enriched in one or more undecamantane components from said treated feedstock recovered in c) above with one or more additional separation techniques selected from the group consisting of chromatographic techniques, thermal diffusion techniques, zone refining, progressive recrystallization and size separation techniques.
A process for recovering a composition enriched in one or more undecamantane components which process comprises:
- a. selecting a feedstock comprising recoverable amounts of undecamantane components and nonundecamantane components;
- b. fractionating the feedstock to form one or more cuts enriched in materials having boiling points in the range of from just below the boiling point of the lowest boiling undecamantane component to just above the boiling point of the highest boiling undecamantane component;
- c. recovering a composition enriched in one or more undecamantane components from said one or more cuts formed in b) above with one or more additional separation techniques selected from the group consisting of chromatographic techniques, thermal diffusion techniques, zone refining, progressive recrystallization and size separation techniques.
A process for recovering a composition enriched in one or more undecamantane components which process comprises:
- a. selecting a feedstock comprising recoverable amounts of undecamantane components and nonundecamantane components including nondiamondoid components;
- b. fractionating the feedstock to form one or more cuts enriched in materials having boiling points in the range of from just below the boiling point of the lowest boiling undecamantane component to just above the boiling point of the highest boiling undecamantane component;
- c. thermally degrading one or more cuts said to pyrolyze at least a sufficient amount of nondiamondoid components therefrom under conditions to form one or more thermally treated cuts retaining recoverable amounts of undecamantane;
- d. recovering a composition comprising one or more undecamantane components from one or more said thermally treated cuts formed in
- c) above with one or more additional separation techniques selected from the group consisting of chromatographic techniques, thermal diffusion techniques, zone refining, progressive recrystallization and size separation techniques.
A process for recovering a composition enriched in one or more undecamantane components which process comprises:
- a. selecting a feedstock comprising recoverable amounts of undecamantane components and nonundecamantane compounds including nondiamondoid components;
- b. thermally degrading said feedstock to pyrolyze at least a sufficient amount of nondiamondoid components therefrom under conditions to provide a thermally treated feedstock retaining recoverable amounts of undecamantane;
- c. fractionating the thermally treated feedstock to form one or more cuts enriched in materials having boiling points in the range of from just below the boiling point of the lowest boiling undecamantane component to just above the boiling point of the highest boiling undecamantane component;
- d. recovering a composition enriched in one or more undecamantane components from one or more cuts formed c) above with one or more additional separation techniques selected from the group consisting of chromatographic techniques, thermal diffusion techniques, zone refining, progressive recrystallization and size separation techniques.
Dependencies are inferred from the claim text.