Process for making a lube basestock

C - Chemistry – Metallurgy – 10 – G

Patent

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C10G 71/00 (2006.01) C10C 5/00 (2006.01) C10G 35/06 (2006.01) C10G 35/085 (2006.01) C10G 35/095 (2006.01) C10G 45/64 (2006.01)

Patent

CA 2319385

A method for hydroisomerizing a waxy feed to favor one of VI or yield is described. The method uses a unitized pellet powder catalyst comprising a metal hydrogeneration component, a first catalytic component selected from 8, 10 and 12 ring molecular sieves and mixtures thereof, and a second amorphous isomerization component which is an amorphous inorganic oxide. Importantly, the ratio of feed and second components are present in a predetermined ratio to provide a preselected acidity favoring one of VI or yield resulting from the hydroisomerization.

L'invention concerne un procédé d'hydroisomérisation d'une charge d'alimentation paraffinique pour améliorer l'indice de viscosité (VI) ou le rendement. Le procédé fait appel à un catalyseur à base de pastilles formées de poudres unifiées comprenant un composant d'hydrogénation de métal; un premier composant catalytique sélectionné dans le groupe formé par des tamis moléculaires à 8, 10 et 12 noyaux et leurs mélanges; et un deuxième composant d'isomérisation amorphe formé d'un oxyde inorganique amorphe. Il est important que le rapport entre la charge et les autres composants soit à un niveau prédéterminé pour produire une acidité présélectionnée permettant d'améliorer VI ou le rendement comme résultat de l'hydroisomérisation.

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