B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 23/44 (2006.01) B01J 23/52 (2006.01) B01J 23/66 (2006.01) B01J 31/04 (2006.01) B01J 37/02 (2006.01) C07C 67/055 (2006.01) C07C 69/01 (2006.01) C07C 69/15 (2006.01)
Patent
CA 2249326
A method for preparing a catalyst wherein a catalytic carrier is impregnated with water-soluble palladium and gold compounds followed by fixing and then reducing the fixed palladium and gold compounds to palladium and gold metal followed by impregnating the carrier with a second amount of a water-soluble gold compound. The second amount of gold compound is fixed, then reduced to gold metal. The catalyst then is impregnated with an alkali metal acetate such as potassium acetate. The catalyst can be employed to synthesize unsaturated esters such as vinyl acetate.
La présente invention concerne un procédé de confection d'un catalyseur consistant à imprégner un support catalytique avec des composés hydrosolubles de palladium et d'or, puis à fixer et à réduire les composés de palladium et d'or fixés en palladium métal et or métal, le procédé se poursuivant par l'imprégnation du support avec une seconde quantité d'un composé hydrosoluble d'or. On fixe ensuite la seconde quantité de composé d'or et on le réduit en or métal. On imprègne alors le catalyseur d'un acétate métallique alcalin tel que l'acétate potassique. Ce catalyseur convient particulièrement pour la synthèse d'esters insaturés tels que l'acétate vinylique.
Flores Azael T.
Nicolau Ioan
Hoechst Celanese Corporation
Smart & Biggar
LandOfFree
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