发明名称 |
Process for the preparation of catalyst used in the production of unsaturated carboxylic acids. |
摘要 |
<p>The present invention provides a process for the preparation of a catalyst used in the production of unsaturated carboxylic acids such as methacrylic acid by the gas phase catalytic oxidation of the corresponding unsaturated aldehydes such as methacrolein. Said catalyst is composed of a multi-component composition containing at least phosphorus, molybdenum and antimony. The present invention has attained an improvement in its catalytic performance such as conversion rate, selectivity, single-pass yield etc. by using antimony trioxide with average particle size of no more than 0.2 micron as a starting material upon preparing said catalyst.</p> |
申请公布号 |
EP0180997(A2) |
申请公布日期 |
1986.05.14 |
申请号 |
EP19850114209 |
申请日期 |
1985.11.07 |
申请人 |
MITSUBISHI RAYON CO. LTD. |
发明人 |
OH-KITA, MOTOMU;ISHII, KAZUHIRO;KATO, MASAAKI;KOBAYASHI, MASAO |
分类号 |
C07C51/235;B01J27/19;C07B61/00;C07C51/00;C07C51/25;C07C57/055;C07C67/00 |
主分类号 |
C07C51/235 |
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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