Invention Grant
- Patent Title: Preparation of acrylic acid by heterogeneously catalyzed partial gas phase oxidation of propylene
- Patent Title (中): 通过丙烯的异质催化部分气相氧化制备丙烯酸
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Application No.: US11131256Application Date: 2005-05-18
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Publication No.: US08431743B2Publication Date: 2013-04-30
- Inventor: Martin Dieterle , Klaus Joachim Mueller-Engel , Claus Hechler , Ulrich Hammon , Armin Diefenbacher
- Applicant: Martin Dieterle , Klaus Joachim Mueller-Engel , Claus Hechler , Ulrich Hammon , Armin Diefenbacher
- Applicant Address: DE Ludwigshafen
- Assignee: BASF Aktiengesellschaft
- Current Assignee: BASF Aktiengesellschaft
- Current Assignee Address: DE Ludwigshafen
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: DE102004032129 20040701; DE102005009885 20050301; DE102005009891 20050301; DE102005010111 20050302; DE102005013039 20050318
- Main IPC: C07C51/42
- IPC: C07C51/42
Abstract:
The present invention relates to a process for preparing acrylic acid by two-stage heterogeneously catalyzed partial gas phase oxidation of propylene, in which the propylene source used is a preceding propane dehydrogenation and in which the first oxidation stage is operated with restricted propylene conversion, and unconverted propane and propylene present in the product gas mixture of the second partial oxidation stage are recycled substantially into the preceding propane dehydrogenation.
Public/Granted literature
- US20060004229A1 Preparation of acrylic acid by heterogeneously catalyzed partial gas phase oxidation of propylene Public/Granted day:2006-01-05
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