Preparation process of a coated catalyst for the s

专利名称：Preparation process of a coated catalyst for

the synthesis of maleic anhydride in the gasphase

发明人：Groke, Dirk, Dr.,Ruedinger, Christoph,

Dr.,Eberle, Hans-Juergen, Dr.,Bosch,Richard,Jering, Reinhard

申请号：EP98111180.0申请日：19980618公开号：EP0917909B1公开日：19990915

摘要：the invention concerns a method for the production of schalenkatalysatoren forgasphasenoxidation of c4 hydrocarbons to maleic anhydride, with a vanadylphosphat -precursors with a v \\/ p ratio of 1: 0.5 to 1: 2, and an intermediate

vanadiumoxidationsstufe from 3.9 to 4.5 in an aqueous or organic medium is producedand is dried and in aqueous suspension is applied to tr\ägerk\örper,

characterized by the fact that the vanadylphosphat - precursors before applied to thetr\ägerk\örper by heating to a temperature of a mehrst\ündiges until c.calcined.the invention further relates to the use of these schalenkatalysatoren inprocedures for gasphasenoxidation of saturated or unsaturated c4 hydrocarbons tomaleic anhydride.

申请人：CONSORTIUM FUER ELEKTROCHEMISCHE INDUSTRIE GMBH,CONSORTIUMELEKTROCHEM IND

代理机构：Schuderer, Michael, Dr.

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