Claims
- 1. A method of making olefin derivatives from an oxygenate comprising:
contacting the oxygenate with a molecular sieve catalyst to produce a hydrocarbon product containing olefin; separating a C4+ fraction containing four or more carbons from the hydrocarbon product; contacting the C4+ fraction with an oligomerization catalyst to produce a product containing higher olefin and a vent stream; and contacting a portion of the vent stream with the oligomerzation catalyst.
- 2. The method of claim 1 wherein the C4+ fraction comprises from about 80% to about 97% by weight butenes and from about 3% to about 20% by weight butanes.
- 3. The method of claim 2 wherein the butenes comprise from about 20% to about 40% by weight 1-butene, and from about 60% to about 80% by weight 2-butene.
- 4. The method of claim 1 wherein the olefin product comprises less than 20 ppmw by weight of an individual contaminant, the individual contaminents selected from the group consisting of hydrogen sulfide, carbonyl sulfide, and arsine.
- 5. The method of claim 1 wherein the molecular sieve catalyst is selected from the group consisting of SAPO-17, SAPO-18, SAPO-34, SAPO-35, SAPO-44, SAPO-56, ZSM-5, ZSM-22, ZSM-35, the metal containing forms of each thereof, and mixtures thereof.
- 6. The method of claim 1 wherein the oligomerization catalyst is selected from the group consisting of nickel-alkyl aluminum, solid phosphoric acid, nickel-oxide, and ZSM-57.
- 7. The method of claim 1 further comprising contacting a portion of the product containing higher olefin with a hydroformylation catalyst.
- 8. The method of claim 1 further comprising separating octenes from the product containing higher olefin and contacting a portion of the octenes with a hydroformylation catalyst to form nonanyl alcohols.
- 9. The method of claim 1 further comprising separating nonenes from the product containing higher olefin and contacting a portion of the nonenes with a hydroformylation catalyst to form decyl alcohols.
- 10. The method of claim 1 further comprising separating dodecenes from the product containing higher olefin and contacting a portion of the dodecenes with a hydrogenation catalyst to form dodecanes.
- 11. An olefin composition comprising:
60 to 80 percent by weight octene; 2 to 10 percent by weight nonene; and 8 to 25 percent by weight dodecene.
- 12. The olefin composition of claim 11 further comprising 2 to 10 percent by weight olefin having sixteen to twenty carbon atoms.
- 13. The olefin composition of claim 11 wherein the olefin composition comprises a branching number less than 2.0.
- 14. The olefin composition of claim 11 wherein the octene comprises an average branching number less than 1.4.
- 15. The olefin composition of claim 11 wherein the nonene comprises an average branching number less than 1.5.
- 16. The olefin composition of claim 11 wherein the dodecane comprises an average branching number less than 1.8.
- 17. The olefin composition of claim 11 wherein the olefin composition comprises from about 10% to about 50% by weight alpha-olefin.
- 18. The olefin composition of claim 11 wherein the octene comprises from about 60% to about 95% by weight 1-octene.
- 19. The olefin composition of claim 18 wherein the octene comprises from about 5% to about 30% 2-octene.
Parent Case Info
[0001] This application claims priority to U.S. Provisional Patent Application No. 60/265,700, filed Feb. 1, 2001.
Provisional Applications (1)
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Number |
Date |
Country |
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60265700 |
Feb 2001 |
US |