发明名称 |
Process for producing methacrylic acid |
摘要 |
In a method of producing methacrylic acid by passing a material gas containing methacrolein, oxygen and water vapor through a reactor packed with a catalyst containing as the main component a compound oxide containing molybdenum and phosphorus, a concentration of methacrolein in the material gas is controlled in a range of 4 to 6.5 vol %, a molar ratio of the water vapor to the methacrolein in the material gas is controlled in a range of 1 to 2, and a space velocity of the material gas to the catalyst-packed layer is controlled in a range of 500 to 750 h<SUP>-1</SUP>, whereby deterioration of the catalyst is effectively inhibited.
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申请公布号 |
US6930201(B2) |
申请公布日期 |
2005.08.16 |
申请号 |
US20030450712 |
申请日期 |
2003.11.05 |
申请人 |
MITSUBISHI RAYON CO., LTD. |
发明人 |
WATANABE SEIGO;OH-KITA MOTOMU |
分类号 |
B01J27/19;B01J27/199;C07B61/00;C07C51/235;C07C51/25;C07C57/055;(IPC1-7):C07C51/16 |
主分类号 |
B01J27/19 |
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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