Method of preparing a supported hydrotreating catalyst
AssigneeExxonMobil Research and Engineering Company
InventorsStuart L. Soled, Sabato Miseo, Joseph E. Baumgartner, Christine E. Kliewer, Andrzej Malek, Andrew C. Moreland
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Abstract
This invention relates to supported multi-metallic catalysts for use in the hydroprocessing of hydrocarbon feeds, as well as a method for preparing such catalysts. The catalysts are prepared from a catalyst precursor comprised of at least one Group VIII metal and a Group VI metal and an organic agent selected from the group consisting of amino alcohols and amino acids. The catalyst precursor is thermally treated to partially decompose the organic agent, then sulfided.
Claims17
A method for preparing a sulfided catalyst composition, which method comprises:
- (a) impregnating an inorganic catalyst support with an aqueous solution containing (i) a salt of a Group VIII metal selected from Co and Ni, (ii) a salt of a Group VI metal selected from Mo and W, and (iii) an effective amount of an organic agent selected from amino alcohols and amino acids;
- (b) drying said impregnated catalyst support to remove substantially all water, thereby resulting in a metal-organic component on support catalyst precursor;
- (c) heating said substantially dried catalyst precursor in a heating step wherein the temperature is increased to above 200° C. but to less than about 325° C., in an oxygen-containing atmosphere wherein about 20 wt. % to about 80 wt. % of the organic portion is oxidized;
- (d) sulfiding said partially oxidized catalyst precursor at sulfiding conditions in the presence of a sulfiding agent, thereby resulting in a sulfided catalyst composition.
Dependencies are inferred from the claim text.