发明名称 |
Heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid |
摘要 |
In a process for partially oxidizing propene to acrylic acid in the gas phase under heterogeneous catalysis, a starting reaction gas mixture comprising propene and oxygen and having a specific composition is oxidized in a first reaction stage over a first fixed catalyst bed having a volume-specific activity which is constant or increases in the flow direction and the acrolein-containing product gas mixture of the first reaction stage is subsequently oxidized in a second reaction stage over a second fixed catalyst bed having a volume-specific activity increasing in the flow direction, and the shaped catalyst bodies of both fixed catalyst beds are annular and each have a specific multimetal oxide composition.
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申请公布号 |
US7019168(B2) |
申请公布日期 |
2006.03.28 |
申请号 |
US20030465653 |
申请日期 |
2003.06.20 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
DIETERLE MARTIN;PETZOLDT JOCHEN;MUELLER-ENGEL KLAUS JOACHIM;MARTAN HANS |
分类号 |
C07C51/16;C07C51/25;C07C57/02 |
主分类号 |
C07C51/16 |
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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