EP0151498A2
Expired / Lapsed
EP
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Process for the preparation of 2-keto-aldonic acids
Assignee: Akzo NV
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Filing: 1985-01-22
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Granted: —
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Expires: 2005-01-22
Abstract
Abstract Preparation of 2-keto-aldonic acids, e.g., 2-keto-gluconic acid, by oxidizing an aldose, e.g. glucose, or aldonic acid in aqueous solution with molecular oxygen. Use is made of a pletinum catalyst together with a catalytic amount of lead and/or bismuth and/or a compound thereof. The pH of the solution is in the range of from 4 to 12 and preferably in the range of from 7 to 9. The reaction may be carried out at a temperature in the range of 0 to 200°C and preferably in the range of from 25° to 80°C.
Inventors
- 👤 Peter Carolus Cornelis Smits
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 22:45
CPC Classifications
C; C07; C07H; C07H7/00; C07H7/02; C07H7/027
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
52 words
A process for the preparation of a 2-keto-aldonic acid from an aldose or aldonic acid, characterized in that an aqueous solution of an aldose or or aldonic acid is oxidized with molecular oxygen in the presence of a platinum catalyst together with a catalytic amount of/lead and/or bismuth and/or a compound thereof.
Claim 2
Dependent Claim
52 words
A process for the preparation of a 2-keto-aldonic acid from an aldose or aldonic acid, characterized in that an aqueous solution of an aldose or or aldonic acid is oxidized with molecular oxygen in the presence of a platinum catalyst together with a catalytic amount of/lead and/or bismuth and/or a compound thereof.
Claim 3
Dependent Claim
30 words
A process according to claim 1, characterized in that the pH of the aqueous solution of the aldose or aldonic acid is in the range of from 4 to 12.
Claim 4
Dependent Claim
30 words
A process according to claim 1, characterized in that the pH of the aqueous solution of the aldose or aldonic acid is in the range of from 7 to 9.
Claim 5
Dependent Claim
25 words
A process according to claim 1, characterized in that the reaction is carried out at a temperature in the range of from 0 to 200°C.
Claim 6
Dependent Claim
25 words
A process according to claim 1, characterized in that the reaction is carried out at a temperature in the range of from 25° to 80°C.
Claim 7
Dependent Claim
28 words
A process according to claim 1, characterized in that the atomic ratio of lead or bismuth to noble metal is in the range of from 2:1 to 1:20.
Claim 8
Dependent Claim
28 words
A process according to claim 1, characterized in that the atomic ratio of lead or bismuth to noble metal is in the range of from 1:6 to 4:7.
Claim 9
Dependent Claim
27 words
A process according to claim 1, characterized in that the reaction is carried out at an oxygen pressure in the range of from 0,001 to 1 MPa.
References Cited (Backward Citations)
No citation records indexed.
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