Carboxylic acid production process employing solvent from esterification of lignocellulosic material
First Claim
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1. A process for producing an aromatic carboxylic acid, said process comprising oxidizing an oxidation feed comprising at least one oxidizable compound and at least one solvent comprising a monocarboxylic acid, wherein at least a portion of said monocarboxylic acid originated from a wood acetylation process;
- and wherein said solvent further comprises one or more terpenes or terpene derivatives;
wherein at least 50% of the said terpenes or terpenes derivatives are oxidized in said oxidation reactor to form carbon monoxide and carbon dioxide.
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Abstract
Methods and apparatus for producing a carboxylic acid employing a solvent from esterification of lignocellulosic materials. An acid-containing composition from esterification of lignocellulosic materials can be employed in the oxidation of para-xylene to terephthalic acid. The acid-containing composition can comprise acetic acid, acetic anhydride, and one or more terpenes or terpenes derivatives.
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25 Claims
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1. A process for producing an aromatic carboxylic acid, said process comprising oxidizing an oxidation feed comprising at least one oxidizable compound and at least one solvent comprising a monocarboxylic acid, wherein at least a portion of said monocarboxylic acid originated from a wood acetylation process;
- and wherein said solvent further comprises one or more terpenes or terpene derivatives;
wherein at least 50% of the said terpenes or terpenes derivatives are oxidized in said oxidation reactor to form carbon monoxide and carbon dioxide. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- and wherein said solvent further comprises one or more terpenes or terpene derivatives;
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8. A process for producing an aromatic carboxylic acid, said process comprising:
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(a) contacting at least one lignocellulosic material with a compound containing at least one acetyl group to thereby produce an acetylated lignocellulosic material and an acid-containing composition; and (b) introducing at least a portion of said acid-containing composition and an oxidizable compound into a carboxylic acid production process, wherein said acid-containing composition comprises acetic acid; and
wherein said acid-containing composition comprises one or more terpenes or terpene derivatives in an amount of at least 0.01 weight percent based on the weight of said acetic acid in said acid-containing composition;
wherein at least 50% of the said terpenes or terpenes derivatives are oxidized in said oxidation reactor to form carbon monoxide and carbon dioxide. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A process for producing an aromatic carboxylic acid, said process comprising oxidizing an oxidizable compound in an oxidation reactor in the presence of at least one solvent, wherein said solvent comprises acetic anhydride in an amount of at least 0.01 weight percent based on the total weight of the solvent;
- wherein said solvent comprises acetic anhydride in an amount of at least 0.05 weight percent based on the total weight of the solvent.
- View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
Specification