July 16, 2012

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 8193387
Title: Producing an unsaturated carboxylic acid from an alkane and catalysts
Inventor(s): Hazin, Paulette N.; Galloway, Frederick Merrill; Ledford, John S.; Nuyen, Andy H.
Patent Assignee(s): Saudi Basic Industries Corporation, Saudi Arabia
Source: PCT Int. Appl., 38pp. CODEN: PIXXD2
Language: English

A 1-step vapor phase oxidation process produces an unsatd. carboxylic acid, such as acrylic acid or methacrylic acid, from an alkane, such as propane or isobutane, with a mixed metal oxide catalyst and an excess of alkane relative to O. The unreacted alkane and the byproduct alkene are recycled to the reaction zone without separation. Overall yield and productivity of the unsatd. carboxylic acid improves for such a process. An analogous method for the preparation of unsatd. nitrites is also disclosed. Propane oxidation process at 400degrees/20 psig using 1 g MoV0.3Nb0.12Te0.23Ox catalyst for 0.23 s showed selectivity to acrylic acid 83.3%.

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


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

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