Method of obtaining nicotinic acid
Patents
| Language: |
Английский |
| Type: |
Invention |
| Number |
EP 0747359 B1 |
| Request number: |
95911500.7 |
| Request date: |
Jan 26, 1995 |
| patent.field.start_date: |
|
| Registration date: |
Apr 19, 2000 |
| patent.field.request_publication_date: |
Dec 11, 1996 |
| Authors |
Alkayeva Yevgeniya
,
Andrushkevich Tamara Vitalievna
,
Zenkovets Galina Alekseevna
,
Makarenko Mikhail Grigorʹevich
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis SB RAS
|
|
A method has been developed for preparing nicotinic acid with a yield of 82-86% mol, in which method there is no formation of harmful gas wastes and liquid wastes. The process is carried out by gas-phase single-step oxidation of beta -picoline with oxygen in the presence of water vapor and a catalyst on the base of oxides of vanadium and titanium, with or without additives, at a temperature of 250-290 DEG C and mole ratios O2: beta -picoline= 15-40 and H2O: beta -picoline = 10-70.