Back to results
US 2015/0307416 A1Published application
Production of isoprene from iso-butanol
AssigneeTotal Research & Technology Feluy
InventorsWalter Vermeiren, Jose C. Gonzalez
Life of this patent
Estimating the term…
Abstract
A process to make isoprene may include providing a reaction zone containing an acidic aqueous solution. The process may include introducing, continuously or intermittently, in the reaction zone a mixture containing isobutanol and an aqueous solution of formaldehyde. The process may include operating the reaction zone at conditions effective to dehydrate isobutanol to iso-butene, and produce isoprene by reaction of formaldehyde and iso-butene, while distilling away a mixture containing produced isoprene and water.
Claims15
1-15. (canceled)
A process comprising:
- a) providing a reaction zone comprising an acidic aqueous solution;
- b) introducing, continuously or intermittently, in said reaction zone a mixture comprising (i) isobutanol and an aqueous solution of formaldehyde;
- c) operating said reaction zone at conditions effective to dehydrate isobutanol to iso-butene and produce isoprene by reaction of formaldehyde and iso-butene while distilling away a mixture comprising produced isoprene and water from the reaction zone to the outside of the reaction zone.
A process comprising:
- a) providing a reaction zone comprising an acidic aqueous solution;
- b) introducing, continuously or intermittently, in said reaction zone a mixture comprising (i) isobutanol and an aqueous solution of formaldehyde;
- c) operating said reaction zone at conditions effective to dehydrate isobutanol to iso-butene and produce isoprene by reaction of formaldehyde and iso-butene while distilling away a mixture comprising produced isoprene and water from the reaction zone to the outside of the reaction zone, wherein under the reaction conditions in the reaction zone the iso-butanol acts as solvent to improve solubility of iso-butene and enhance the presence of t-butyl-carbocations in the aqueous phase.
Dependencies are inferred from the claim text.