Process for the production of methionine

Details Process for the production of methionine Process for the production of methionine

2005-06-28

2005-06-28

Wilson, James O. (Department: 1624)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

Reexamination Certificate

active

06911557

ABSTRACT:
A process for the production of methionine which comprises (a) hydrolysing the methionine amide in the presence of a catalyst comprising titanium to produce ammonium methioninate, said catalyst having a porosity of from 5 to 1000 nm, a total pore volume of from 0.2 to 0.55 cm3/g and a surface area of from 30 to 150 m2/g, and (b) a second step of recuperating methionine from the ammonium methioninate salt by removing ammonia. Also claimed is an industrial process for the production of methionine incorporating the aforementioned hydrolysis.

REFERENCES:
patent: 5672745 (1997-09-01), Hasseberg et al.
patent: 6545179 (2003-04-01), Ponceblanc et al.
patent: WO 94/08957 (1994-04-01), None
patent: 2 772 026 (1999-06-01), None
patent: 3-93754 (1991-04-01), None
patent: 03-093753 (1991-04-01), None
Catalysts, Supported (section 7), Robert P. Nielson, Kirk-Othmer Encyclopedia of Chemical Technology. John Wiley & Sons (1993).
English language abstract of JP 03093754 (Apr. 18, 1991).
English language abstract of JP 03093753 (Apr. 18, 1991).
English language abstract of FR 2 772 026 from Orbit (Jun. 11, 1999).

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