Method of converting levulinic acid or a derivative thereof to hydrocarbons and hydrogen, and methods of the production of hydrocarbons and hydrogen

Patent metadata

Field	Value
Publication number	US-9878967-B2
Application number	US-201615387924-A
Country	US
Kind code	B2
Filing date	Dec 22, 2016
Priority date	Dec 23, 2015
Publication date	Jan 30, 2018
Grant date	Jan 30, 2018

Abstract

The present invention relates to a method of converting levulinic acid or a derivative thereof to hydrocarbons and hydrogen by providing a source of levulinic acid or a derivative thereof and converting the levulinic acid or a derivative thereof in the source to hydrocarbons and hydrogen, where converting is carried out in a single reactor. The present invention also relates to methods for producing hydrocarbons and hydrogen.

First claim

What is claimed:

1. A method of converting levulinic acid or a derivative thereof to hydrocarbons and hydrogen, said method comprising:
providing a source of levulinic acid or a derivative thereof and
converting levulinic acid or a derivative thereof in the source to hydrocarbons and hydrogen, wherein said converting is carried out in a single reactor.

2. The method according to claim 1 , wherein said converting is carried out in the presence of a catalyst.

3. The method according to claim 2 , wherein the catalyst is selected from a metal, metal oxide, zeolite, or mixture thereof.

4. The method according to claim 3 , wherein the catalyst is selected from Fe, Co, Ni, Ru, Sn, Mo, Pt, or a mixture thereof.

5. The method according to claim 2 , wherein said catalyst is present on a support material.

6. The method according to claim 5 , wherein the support material is selected from carbon, graphene, silicon dioxide, titanium oxide, zirconium oxide, cerium oxide, zeolite, or a mixture thereof.

7. The method according to claim 1 , wherein said converting is carried out in the presence of water.

8. The method according to claim 1 , wherein said converting is carried out in the presence of formic acid.

9. The method according to claim 1 , wherein carbon dioxide is produced as a product.

10. The method according to claim 1 , wherein said converting is carried out at temperature of about 200-400° C.

11. The method according to claim 1 , wherein said reactor is a high pressure vessel.

12. The method according to claim 1 , wherein said reactor is a flow reactor.

13. The method according to claim 1 , wherein said converting is carried out at a pressure of about 500-5000 psi.

14. The method according to claim 1 , wherein said converting is carried out under an inert atmosphere.

15. The method according to claim 14 , wherein said converting is carried out in the presence of nitrogen gas, helium, argon, or carbon dioxide.

16. The method according to claim 1 , wherein said converting is carried out in the presence of a reducing agent selected from hydrogen, carbon monoxide, or a mixture thereof.

17. The method according to claim 1 , wherein said converting is carried out in the presence of hydrocarbons.

18. The method according to claim 1 , wherein said converting is carried out for a period of about 1 to about 24 hours.

19. The method according to claim 1 , wherein said converting yields less than about 10% oxygenates.

20. The method according to claim 1 , wherein said converting results in an overall yield of 60-99% hydrocarbons.

21. The method according to claim 1 , wherein said hydrocarbons comprise olefins, aromatics, and alkanes.

22. The method according to claim 21 , wherein said olefins, aromatics, and alkanes comprise one or more of the following:

23. The method according to claim 1 , wherein levulinic acid is converted to hydrocarbons.

24. The method according to claim 1 , wherein levulinate ester is converted to hydrocarbons.

25. A method of producing hydrocarbons and hydrogen, said method comprising:
providing a reactor comprising:
levulinic acid or a derivative thereof;
water; and
formic acid and

heating the reactor or contents therein under conditions effective to convert the levulinic acid or derivative thereof to hydrocarbons and hydrogen.

26. The method according to claim 25 , wherein the reactor further comprises a metal or metal oxide catalyst.

27. The method according to claim 25 , wherein said heating is carried out to a temperature of about 200-400° C.

28. The method according to claim 25 , wherein said heating is carried out for about 1 to about 24 hours.

29. A method for producing hydrocarbons and hydrogen from biomass, said method comprising:
providing lignocellulosic biomass;
reacting the biomass with reagents under conditions effective to produce levulinic acid or a derivative thereof; and
converting the levulinic acid or derivative thereof to hydrocarbons and hydrogen, wherein said converting is carried out in a single reactor.

Assignees

• Univ Iowa State Res Found Inc

Inventors

• Huang Wenyu
• Xiao Chaoxian

Classifications

• C07C2523/10

  of rare earths · CPC title

• C07C2601/16

  the ring being unsaturated · CPC title

• C07C2521/06

  Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof · CPC title

• C07C2601/10

  the ring being unsaturated · CPC title

• C07C2523/75

  Cobalt · CPC title