JPS5630942A - Preparation of oxalic acid-containing product by oxidation of carbonaceous material with nitrogen oxo acid salt - Google Patents
Preparation of oxalic acid-containing product by oxidation of carbonaceous material with nitrogen oxo acid saltInfo
- Publication number
- JPS5630942A JPS5630942A JP10789179A JP10789179A JPS5630942A JP S5630942 A JPS5630942 A JP S5630942A JP 10789179 A JP10789179 A JP 10789179A JP 10789179 A JP10789179 A JP 10789179A JP S5630942 A JPS5630942 A JP S5630942A
- Authority
- JP
- Japan
- Prior art keywords
- coal
- carbonaceous material
- oxalic acid
- salt
- containing product
- 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
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To prepare an oxalic acid-containing product useful as a starting material in organic synthetic chemistry, etc. in high yield under mild reaction conditions, by oxidizing a carbonaceous material with a salt of nitrogen oxo acid in an aqueous solution of a caustic alkali having a specific concentration at high temperature.
CONSTITUTION: A carbonaceous material, e.g. coal having various carbonization degrees, residues prepared by steam treatment, hydrogenation treatment, etc. of coal, etc., is oxidized with a salt of nitrogen oxo acid in an aqueous solution of a caustic alkali having a concentration of 2W100mol/kg H2O, preferably 3W50mol/kg H2O at high temperature pref. at 200W400°C to give an oxalic acid-containing product. The yield of oxalic acid can be increased by pretreating coal having a high carbonization degree in oxygen or atmosphere containing oxygen to adjust the carbon content and the oxygen content of the coal to those of brown coal. The salt of nitrogen oxo acid is nitrates etc. and its amount is pref. 5W15 times (weight) that of the carbonaceous material calculated in terms of sodium nitrate.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10789179A JPS5630942A (en) | 1979-08-24 | 1979-08-24 | Preparation of oxalic acid-containing product by oxidation of carbonaceous material with nitrogen oxo acid salt |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10789179A JPS5630942A (en) | 1979-08-24 | 1979-08-24 | Preparation of oxalic acid-containing product by oxidation of carbonaceous material with nitrogen oxo acid salt |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5630942A true JPS5630942A (en) | 1981-03-28 |
JPS6236510B2 JPS6236510B2 (en) | 1987-08-07 |
Family
ID=14470686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10789179A Granted JPS5630942A (en) | 1979-08-24 | 1979-08-24 | Preparation of oxalic acid-containing product by oxidation of carbonaceous material with nitrogen oxo acid salt |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5630942A (en) |
-
1979
- 1979-08-24 JP JP10789179A patent/JPS5630942A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6236510B2 (en) | 1987-08-07 |
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