JPS57163340A - Preparation of 2-keto-l-gulonic acid - Google Patents
Preparation of 2-keto-l-gulonic acidInfo
- Publication number
- JPS57163340A JPS57163340A JP56047148A JP4714881A JPS57163340A JP S57163340 A JPS57163340 A JP S57163340A JP 56047148 A JP56047148 A JP 56047148A JP 4714881 A JP4714881 A JP 4714881A JP S57163340 A JPS57163340 A JP S57163340A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- keto
- gulonic acid
- preparation
- sorbose
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Saccharide Compounds (AREA)
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
PURPOSE: To prepare the titled compound useful as a precursor of ascorbic acid, in one step, by oxidizing L-sorbose with an oxygen-containing gas using a catalyst obtained by adding Pb or Bi as the second component to Pt or Pd.
CONSTITUTION: 2-Keto-L-gulonic acid is prepared by the oxidation of L-sorbose with an oxygen-containing gas in an aqueous solution in the presence of a catalyst containing Pt and/or Pd and Pb and/or Bi, keeping the pH of the reaction liquid at 6W10. The catalyst is obtained by supporting the metal or oxide of Pt or Pd, and the metal, hydroxide, oxide, carbonate, organic acid salt, etc. of Pb or Bi on a carrier such as activated charcoal, alumina, etc. The amount of supported Pt or Pd is 0.5W5wt%, and that of Pb or Bi is 1W5wt%. The amount of the catalyst is preferably 10W50g per 1l of the reaction liquid.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56047148A JPS57163340A (en) | 1981-04-01 | 1981-04-01 | Preparation of 2-keto-l-gulonic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56047148A JPS57163340A (en) | 1981-04-01 | 1981-04-01 | Preparation of 2-keto-l-gulonic acid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57163340A true JPS57163340A (en) | 1982-10-07 |
| JPS648638B2 JPS648638B2 (en) | 1989-02-14 |
Family
ID=12767007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56047148A Granted JPS57163340A (en) | 1981-04-01 | 1981-04-01 | Preparation of 2-keto-l-gulonic acid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57163340A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0151498A2 (en) * | 1984-01-23 | 1985-08-14 | Akzo N.V. | Process for the preparation of 2-keto-aldonic acids |
-
1981
- 1981-04-01 JP JP56047148A patent/JPS57163340A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0151498A2 (en) * | 1984-01-23 | 1985-08-14 | Akzo N.V. | Process for the preparation of 2-keto-aldonic acids |
| JPS60163840A (en) * | 1984-01-23 | 1985-08-26 | アクゾ・ナームローゼ・フエンノートシヤツプ | Manufacture of 2-ketoaldonic acid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS648638B2 (en) | 1989-02-14 |
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