Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Jochen Petzoldt0
Signe Unverricht0
Klaus Joachim Mueller-Engel0
Date of Patent
August 17, 2010
0Patent Application Number
109345250
Date Filed
September 7, 2004
0Patent Primary Examiner
Patent abstract
A process for preparing annular unsupported catalysts by thermally treating annular shaped unsupported catalyst precursor bodies, wherein the side crushing strength of the annular shaped unsupported catalyst precursor bodies is ≧12 N and ≦23 N; such precursor bodies per se; annular unsupported catalysts having a specific pore structure; and a method of using such annular unsupported catalysts for the catalytic partial oxidative preparation in the gas phase of (meth)acrolein.
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