Catalyst and process for preparing 2-buten-1-ol compounds

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B01J 23/44 (2006.01) B01J 21/08 (2006.01) B01J 27/057 (2006.01) C07C 29/56 (2006.01) C07C 33/025 (2006.01) C07C 41/32 (2006.01) C07C 43/15 (2006.01) C07C 67/293 (2006.01) C07C 69/145 (2006.01) B01J 35/10 (2006.01)

Patent

CA 2218137

The fixed-bed catalyst comprises palladium and selenium or tellurium or a mixture of selenium and tellurium on a silicon dioxide support and has a BET surface area of from 80 to 380 m2/g and a pore volume of from 0.6 to 0.95 cm3/g in the pore diameter range from 3 nm to 300 µm, with from 80 to 95% of the pore volume being in the pore diameter range from 10 to 100 nm. It is prepared by impregnating a silicon dioxide support with a solution of a palladium compound and a selenium compound or tellurium compound or a mixture of a selenium compound and a tellurium compound, drying it and reducing it in the presence of hydrogen. The catalyst is used, in particular, for isomerizing 3-buten-1-ol compounds.

Le catalyseur à lit fixe comprend du palladium et du sélénium ou du tellure ou un mélange de sélénium et de tellure sur un support de dioxyde de silicium et offre une surface BET de 80 à 380 m2/g et un volume poreux de 0,6 à 0,95 cm3/g dans une étendue de diamètre des pores de 3 nm à 300 micromètres, 80 à 95 % du volume poreux se situant dans une étendue de diamètre des pores de 10 à 100 nm. Il est préparé par imprégnation du support de dioxyde de silicium par une solution contenant un composé du palladium et un composé du sélénium et un composé du tellure ou un mélange d'un composé du sélénium et d'un composé du tellure, par séchage du support et par réduction de ce dernier en présence d'hydrogène. Le catalyseur est utilisé, en particulier, pour isomériser les composés du 3-butén-1-ol.

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