发明专利
TW200533655A 菸鹼酸之製造方法及該方法所用之觸媒 PROCESS FOR PREPARING NICOTINIC ACID AND CATALYST USED IN THE METHOD
审中-公开
基本信息:
- 专利标题： 菸鹼酸之製造方法及該方法所用之觸媒 PROCESS FOR PREPARING NICOTINIC ACID AND CATALYST USED IN THE METHOD
- 专利标题（英）：Process for preparing nicotinic acid and catalyst used in the method
- 专利标题（中）：烟碱酸之制造方法及该方法所用之触媒 PROCESS FOR PREPARING NICOTINIC ACID AND CATALYST USED IN THE METHOD
- 申请号：TW093109379 申请日：2004-04-05
- 公开(公告)号：TW200533655A 公开(公告)日：2005-10-16
- 发明人： 呂志昇 LU, CHIH-SHENG , 李朝陽 LEE, CHAO-YANG , 熊士健 HSIUNG, SHIH-CHIN , 蔡勁軍 TSAI, JING-JIN
- 申请人： 長春石油化學股份有限公司 CHANG CHUN PETROCHEMICAL CO., LTD.
- 申请人地址： 臺北市中山區松江路301號7樓
- 专利权人： 長春石油化學股份有限公司 CHANG CHUN PETROCHEMICAL CO., LTD.
- 当前专利权人： 長春石油化學股份有限公司 CHANG CHUN PETROCHEMICAL CO., LTD.
- 当前专利权人地址： 臺北市中山區松江路301號7樓
- 代理人： 周登龍
- 主分类号： C07D
- IPC分类号： C07D ; C01G
The present invention relates to a process for preparing nicotinic acid, which comprises directly subjecting a mixture of 3-methylpyridine, oxygen, and water to a gas-phase oxidation in the presence of a catalyst consisting of vanadium oxide (V2O5) and transition metal oxide both of which are supported on a supporter, to give the nicotinic acid, wherein crystal size of the catalyst on the surface of the carrier is controlled in a range of from 40 to 200 nm through use of transition metal oxide. The present invention further relates to a catalyst used in the gas-phase oxidation. In the method according to the present invention, the nicotinic acid can be obtained in a higher convertibility and a higher selectivity by using a lower content of vanadium oxide. Therefore, the manufacturing cost can be reduced.