January 27, 2014

CAS databases provide millions of journal article references from more than 10,000 major scientific journals worldwide, patent and patent family references from 63 patent authorities around the world, and other reputable web sources.

The following patent record is from the CAplusSM database.


Patent Number: US 8598399
Title: Catalyst composition for direct conversion of ethanol to propylene
Inventor(s): Liu, Yu; Malek, Andrzej; Schweizer, Albert E., Jr.
Patent Assignee(s): Dow Global Technologies LLC, USA
Source: PCT Int. Appl., 16pp. CODEN: PIXXD2
Language: English

Disclosed is a process to prep. propylene showing desirably increased selectivity comprises contacting, at an elevated temp., ethanol and a rhenium oxide-modified ZSM-5 zeolite catalyst, under conditions suitable to form propylene.  The rhenium oxide-modified ZSM-5 zeolite catalyst may be prepd. by impregnating, in an aq. or org. medium, a ZSM-5 zeolite with a rhenium source, under conditions suitable to form a catalyst precursor, and calcining the catalyst precursor under conditions suitable to form a rhenium oxide-modified ZSM-5 zeolite catalyst.

Please note:  Abstracts and Titles for patent records in CAplus are routinely enhanced to better describe the claimed invention.

 View the full-text here.

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