JPS5721336A - Preparation of acetic anhydride - Google Patents
Preparation of acetic anhydrideInfo
- Publication number
- JPS5721336A JPS5721336A JP9468780A JP9468780A JPS5721336A JP S5721336 A JPS5721336 A JP S5721336A JP 9468780 A JP9468780 A JP 9468780A JP 9468780 A JP9468780 A JP 9468780A JP S5721336 A JPS5721336 A JP S5721336A
- Authority
- JP
- Japan
- Prior art keywords
- rhodium
- iodine
- per
- carboxylic acid
- acetic anhydride
- 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
Abstract
PURPOSE: To obtain acetic anhydride useful as a raw material for acetylcellulose in high yield, by reacting methyl acetate with CO in the presence of rhodium, iodine, N-methyl-2-pyrrolidone and a lower aliphatic carboxylic acid in uniform liquid phase from beginning to end.
CONSTITUTION: In preparing acetic anhydride by carbonylation of methyl acetate, rhodium, iodine, N-methyl-2-pyrrolidone(A), and lower aliphatic carboxylic acid are used as catalysts. A salt, carbonyl complex, chelate compound, etc. of rhodium are used as rhodium in state where rhodium is dissolved in liquid phase in a ratio of 0.1W10mg atom rhodium per mole methyl acetate. A simple substance of iodine, alkali metal iodine, iodoalkyl, etc. is used as iodine in an amount to give 0.1W 100mol (simple substance) per g atom rhodium. The amount of the compound A is 1W1,000mol per g atom rhodium and the amount of the lower aliphatic carboxylic acid (preferably acetic acid) is 0.1W20mol per mol compound A.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9468780A JPS5721336A (en) | 1980-07-11 | 1980-07-11 | Preparation of acetic anhydride |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9468780A JPS5721336A (en) | 1980-07-11 | 1980-07-11 | Preparation of acetic anhydride |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5721336A true JPS5721336A (en) | 1982-02-04 |
JPS6314700B2 JPS6314700B2 (en) | 1988-04-01 |
Family
ID=14117102
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9468780A Granted JPS5721336A (en) | 1980-07-11 | 1980-07-11 | Preparation of acetic anhydride |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5721336A (en) |
-
1980
- 1980-07-11 JP JP9468780A patent/JPS5721336A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6314700B2 (en) | 1988-04-01 |
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