The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 16, 2012
Filed:
Nov. 22, 2010
Ronald C. Stites, Brighton, CO (US);
Shakeel Tirmizi, Matawan, NJ (US);
Jerrod Hohman, Superior, CO (US);
Stephen Deutch, Broomfield, CO (US);
Ronald C. Stites, Brighton, CO (US);
Shakeel Tirmizi, Matawan, NJ (US);
Jerrod Hohman, Superior, CO (US);
Stephen Deutch, Broomfield, CO (US);
Albemarle Corporation, Baton Rouge, LA (US);
Abstract
The present invention provides processes for selectively producing ethanol from syngas. In some variations, the process comprises converting biomass-derived syngas to dimethyl ether, carbonylating the dimethyl ether to methyl acetate, hydrogenating the methyl acetate to methanol and ethanol, and recovering the ethanol product. The methanol is preferably recycled by converting to hydrogen and carbon monoxide for introduction back into the process at distinct points. In certain variations of this invention, fresh syngas feed is introduced downstream of the first unit operation in the sequence. High yields of ethanol from biomass can be achieved according to the disclosed processes.