PROCESS FOR THE PRODUCTION OF AROMATIC CARBOXYLIC ACIDS IN WATER
A process is disclosed for producing at least one aromatic carboxylic acid by contacting a liquid reaction mixture comprising an aromatic feedstock and water with oxygen in the presence of a bromine-free metal catalyst composition wherein the metal catalyst composition has activity in the absence of...
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Main Authors | , , , , , , , |
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Format | Patent |
Language | English Spanish |
Published |
12.11.2008
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Subjects | |
Online Access | Get full text |
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Summary: | A process is disclosed for producing at least one aromatic carboxylic acid by contacting a liquid reaction mixture comprising an aromatic feedstock and water with oxygen in the presence of a bromine-free metal catalyst composition wherein the metal catalyst composition has activity in the absence of bromine for oxidation of the aromatic feedstock with at least 80% conversion to oxidized aromatic derivatives of the aromatic feedstock and with at least 80% selectivity to the aromatic carboxylic acid. This process operates in water without the use of bromine at temperatures and residence times substantially the same as conventional processes for aromatic carboxylic acid manufacture, as well as with less total burning and with yields to product equivalent or higher than conventional processes.
La presente invención se refiere a un proceso para producir al menos, un ácido carboxílico aromático contactando una mezcla de reacción líquida que comprende, una materia prima aromática y agua con oxígeno en la presencia de una composición catalizadora de metal libre de bromo, en donde la composición catalizadora de metal tiene actividad en la ausencia de bromo para oxidación de la materia prima aromática con al menos, 80% de conversión a derivados aromáticos oxidados de la materia prima aromática y con al menos, 80% de selectividad al ácido carboxílico aromático. Este proceso opera en agua sin el uso de bromo a temperaturas y tiempos de residencia sustancialmente los mismos como los procesos convencionales para la manufactura de ácido carboxílico aromático, así como también, con menos quemado total y con rendimientos para productos equivalentes o superiores que los procesos convencionales. |
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Bibliography: | Application Number: MX20080013987 |