发明名称 |
Method for producing methacrolein and/or methacrylic acid |
摘要 |
The present invention relates to a method for producing methacrolein and/or methacrylic acid characterized in that the catalyst filling length of a dehydration catalyst layer is 3 to 20% of the catalyst filling length of an oxidation catalyst layer in a method where raw material gas containing gaseous t-butanol is supplied to a fixed-bed multitubular reactor having a dehydration catalyst layer and an oxidation catalyst layer in this order, from the entrance for raw material gas toward the exit, to produce methacrolein and/or methacrylic acid by dehydration reaction and catalytic gas phase oxidation reaction, and the present invention can increase the conventional yield of approximately 80% to 81 to 82% even when a reaction bath temperature is relatively low (approximately 355° C.). |
申请公布号 |
US8088947(B2) |
申请公布日期 |
2012.01.03 |
申请号 |
US20070223494 |
申请日期 |
2007.03.30 |
申请人 |
KURAKAMI TATSUHIKO;KOJIMA TOSHITAKE;SEO YOSHIMASA;NIPPON KAYAKU KABUSHIKI KAISHA |
发明人 |
KURAKAMI TATSUHIKO;KOJIMA TOSHITAKE;SEO YOSHIMASA |
分类号 |
C07C51/12;C07C45/00;C07C51/14;C07C51/16 |
主分类号 |
C07C51/12 |
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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