Method of obtaining nicotinic acid
Патенты
| Язык: |
Английский |
| Тип: |
Патент на изобретение |
| Номер (11) |
US 5728837 A |
| Номер заявки (21): |
676,352 |
| Дата подачи заявки (22): |
26 янв. 1995 г. |
| Дата начала отсчета срока действия патента (24): |
|
| Дата публикации патента (44,45,46): |
17 мар. 1998 г. |
| Дата публикации заявки (43): |
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| Авторы |
Алькаева Евгения Моисеевна
,
Андрушкевич Тамара Витальевна
,
Зенковец Галина Алексеевна
,
Макаренко Михаил Григорьевич
|
| Организации |
| 1 |
Институт катализа им. Г.К. Борескова СО РАН
|
|
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 DEG -290 DEG C. and mole ratios O2: beta -picoline=15-40 and H2O: beta -picoline=10-70.
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 DEG -290 DEG C. and mole ratios O2: beta -picoline=15-40 and H2O: beta -picoline=10-70.