Supported Hydrotreating Catalysts Having Enhanced Activity
AssigneeAlbemarle Catalysts Company B.V.
InventorsBastiaan Maarten Vogelaar, Jacob Arie Bergwerff, Johan van Oene, Henk Jan Tromp
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Abstract
This invention provides supported catalysts comprising a carrier, phosphorus, at least one Group VI metal, at least one Group VIII metal, and a polymer. In the catalyst, the molar ratio of phosphorus to Group VI metal is about 1:1.5 to less than about 1:12, the molar ratio of the Group VI metal to the Group VIII metal is about 1:1 to about 5:1, and the polymer has a carbon backbone and comprises functional groups having at least one heteroatom. Also provided are a process for preparing such supported catalysts, as well as methods for hydrotreating, hydrodenitrogenation, and/or hydrodesulfurization, using supported catalysts.
Claims25
A supported catalyst comprising a carrier, phosphorus, at least one Group VIB metal, at least one Group VIII metal, and a polymer, where
- the molar ratio of phosphorus to Group VIB metal is about 1:1.5 to less than about 1:12,
- the molar ratio of the Group VIB metal to the Group VIII metal is about 1:1 to about 5:1, and
- the polymer has a carbon backbone, comprises functional groups having at least one heteroatom,
- wherein the polymer is formed by polymerizing a monomer in contact with the carrier, wherein the monomer and carrier are brought together, and wherein the polymer loading is about 1.5 wt % or more, relative to the total weight of the other components in the catalyst.
A process for forming a supported catalyst, which process comprises
- I) bringing together components in any of the following combinations:
- a-i) a carrier, one or more monomer species, a polar solvent, and optionally an initiator,
- b-i) a carrier, one or more monomer species, at least one phosphorus compound, at least one Group VIB metal compound, and at least one Group VIII metal compound, and optionally an initiator, or
- c-i) a carrier and an impregnation solution, forming an impregnated carrier, followed by mixing the impregnated carrier with one or more monomer species and optionally an initiator,
- to form a monomer-containing mixture, where said monomer species is soluble in the polar solvent and has carbon-carbon unsaturation and at least one functional group comprising at least one heteroatom;
- and
- II) polymerizing at least a portion of said monomer species in the monomer-containing mixture to form a polymerized product;
- III) when I) does not include at least one phosphorus compound, at least one Group VIB metal compound, and at least one Group VIII metal compound, either
- a-iia) contacting an impregnation solution and the monomer-containing mixture during the polymerizing in II), or
- a-iib) contacting the polymerized product and an impregnation solution;
- to form a supported catalyst, where the molar ratio of phosphorus to Group VIB metal is about 1:1.5 to less than about 1:12, where the molar ratio of the Group VIB metal to the Group VIII metal is about 1:1 to about 5:1, where said impregnation solution comprises a polar solvent, phosphorus, at least one Group VIB metal, and at least one Group VIII metal, where a polymer is formed during the polymerizing and the polymer has a carbon backbone, and comprises functional groups having at least one heteroatom, and the polymer loading is about 1.5 wt % or more, relative to the total weight of the other components in the catalyst.
Dependencies are inferred from the claim text.