September 19, 2011

CAS databases provide millions of journal article references from more than 10,000 major scientific journals worldwide, patent and patent family references from 61 patent authorities around the world, and other reputable web sources.

The following patent record is from the CAplusSM database.


Patent Number: US 7994377
Title: Conversion of ethanol to a base for diesel fuel
Inventor(s): Coupard, Vincent; Maury, Sylvie; Capuano, Frederic; Bengrine, Mohamed
Patent Assignee(s): IFP, Fr.
Source: Eur. Pat. Appl., 19pp. CODEN: EPXXDW
Language: French

A procedure for conversion of EtOH to a base for diesel fuel involves (1) a dehydration-oligomerization reaction by contacting EtOH with an amorphous or structured mesoporous acid catalyst (especially Al2O3, alumina-silica) containing 60%  or more of the pores 2-50 nm diameter at 300-500 degrees C, 2-10 MPa, and a space velocity of (0.2-4)/h to produce a gaseous phase, an organic liquid phase, and an aqueous liquid phase; and (2) separation of the gaseous phase, the organic liquid phase, and aqueous liquid phase at a pressure similar to the reaction pressure. The catalyst is regenerated in a flowing air at 400-600 degrees C and a pressure between the atmospheric pressure and the reaction pressure. Optionally, the procedure includes recycling of at least a portion of the gaseous phase separated in the step 2 back to the phase 1 and hydrogenation of at least a portion of the organic liquid phase separated in the step 2 on a catalyst containing a Group VIII metal and an Al2O3, SiO2, or alumina-silica support at 100-250 degrees C, 2-5 MPa, and a space velocity of (1-8)/h.

Please note:
  Titles and abstracts for patent records in CAplus are routinely enhanced to better describe the claimed invention. In this example, CAS originally indexed the EPO publication, EP 1862528, and enhanced both the abstract and title using additional information found in the patent. The original title of the U.S. granted patent is Method of converting ethanol to base stock for diesel fuel. For the CAplus record, this title was enhanced to read Conversion of ethanol to a base for diesel fuel.

View the full-text U.S. patent from USPTO.

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