Reference : Transition metal aerogel-supported catalyst
Patent : Patent
Physical, chemical, mathematical & earth Sciences : Chemistry
Engineering, computing & technology : Chemical engineering
Engineering, computing & technology : Materials science & engineering
Transition metal aerogel-supported catalyst
Heinrichs, Benoît mailto [Université de Liège - ULiège > Département de chimie appliquée > Ingén. des nanomatériaux, des matér. divisés et des interf. >]
Pirard, Jean-Paul mailto [Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Génie catalytique >]
Pirard, René [Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Génie catalytique >]
US Patent Office, Japanese Patent Office, German Patent Office, European Patent Office
United States of America, Japan, Germany, Europe
Solvay Deutschland GmbH
B01J 21/08; B01J 21/12
502/234; 502/235; 502/236; 502/237; 502/238; 502/239; 502/244; 502/245; 502/259; 502/260; 502/262
[en] A process for preparing a supported catalyst comprising a transition metal selected from palladium, platinum, nickel, cobalt or copper on an aerogel support, which includes the steps of providing a mixture containing an alkoxide precursor of the aerogel, a chelate complex of the transition metal with a chelating agent having Si(OR)3 anchor groups, and an organic solvent in which the chelate complex is soluble; hydrolyzing the mixture by admixing it with water to form a gel; and converting the gel under supercritical conditions into the transition metal aerogel-supported catalyst. The supported catalyst has an especially homogeneous distribution of the metal component and is suitable, for example, for use as a hydrogenation catalyst.
Brevets obtenus également au Japon (JP7016448, 1995), en Allemagne (DE4319909, 1996), en Europe (EP 0629442, 1998).

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