Processes for the preparation of catalysts, non supported annular and acroleu00ecna and / or metacroleu00ecna, catalyst unsupported annul, and body precursor of catalyst unsupported annul

摘要

"Processes for the preparation of catalysts, non supported annular and acroleu00ecna and / or metacroleu00ecna, catalyst unsupported annul, and body precursor of catalyst unsupported cancel.The invention relates to a process for the preparation of super catalysts by thermal treatment of molded bodies of precursors of super catalyst in annular form.The resistance to lateral pressure of the bodies molded precursor super catalyst form annul is 242 and 243 12 23 n.The invention relates also to the super catalysts in annular form having a specific pore structure from and to the use of catalysts in the form referred to super cancel for the production oxidizesPartial gas phase catalytic action of (MET) acrolein.