发明名称 |
Process for producing carboxylic acid |
摘要 |
The present invention relates to an improved process for producing an organic carboxylic acid having (n+1) carbon atoms by reacting an alcohol having n carbon atoms with carbon monoxide in the presence of a rhodium catalyst system. More particularly, the present invention relates to carbonylation of alcohol such as methanol catalyzed by a rhodium system to produce acetic acid. The characteristic of the present invention is the addition of a catalyst stabilizer in the reaction medium to avoid or to alleviate the precipitation of the catalyst in the liquid phase. The catalyst stabilizer as used herein is a pyridine derivative having substituent(s) of such as (CH2)mCOOR or (CH2)mSO3R (R=H or hydrocarbons; m=0-6).
|
申请公布号 |
US6346644(B1) |
申请公布日期 |
2002.02.12 |
申请号 |
US20000482173 |
申请日期 |
2000.01.12 |
申请人 |
CHINA PETROCHEMICAL DEVELOPMENT CORP. |
发明人 |
SHIH KUO-CHEN;WANG SHU-HEI;WENG TSU-TSENG;AI KOU-SUEIN |
分类号 |
C07C51/12;(IPC1-7):C07C51/12 |
主分类号 |
C07C51/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|