发明名称 |
PROCEDEU DE OBTINERE A NICOTINONITRILULUI |
摘要 |
<p>Mono-and di-lower alkyl substituted pyridines can be converted to pyridine nitriles by reaction with ammonia, in the substantial absence of free oxygen, and in the presence of a transition metal oxide catalyst. Intermediate products can be recycled to the nitrile production step. The nitrile can be converted to the carboxylic acid by; aqueous hydrolysis, in the presence of ammonia or ammonium salts, at temperatures between about 200 DEG F and 450 DEG F. Ammonia is stripped from the hydrolysis mixture by passing a stripping gas through the mixture. In a preferred embodiment, the hydrolysis and stripping are performed simultaneously and continuously, with the hydrolysis mixture and stripping gas moving countercurrently to each other.</p> |
申请公布号 |
RO66321(A) |
申请公布日期 |
1980.01.15 |
申请号 |
RO19740079964 |
申请日期 |
1974.09.12 |
申请人 |
THE LUMMUS CO,US |
发明人 |
SZE,MORGAN C.,US;GELBEIN,ABRAHAM P.,US;PAUSTIAN,JOHN E.,US |
分类号 |
C07D213/80;B01J23/00;B01J35/10;B01J37/04;C07B61/00;C07D213/79;C07D213/803;C07D213/82;C07D213/84;(IPC1-7):07D213/57 |
主分类号 |
C07D213/80 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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