초록 ▼

Stable catalyst carrier impregnating solutions can be prepared using a component of a Group VIB metal, e.g., molybdenum, at high concentration, a component of a Group VIII metal, e.g., nickel, at low concentration, and a phosphorous component, e.g., phosphoric acid, at low concentration, provided th

Stable catalyst carrier impregnating solutions can be prepared using a component of a Group VIB metal, e.g., molybdenum, at high concentration, a component of a Group VIII metal, e.g., nickel, at low concentration, and a phosphorous component, e.g., phosphoric acid, at low concentration, provided that the Group VIII metal is in a substantially water-insoluble form and a particular sequence of addition of the components is followed, even when a substantially water-insoluble form of the Group VIB component is used. The resulting stabilized impregnating solution can be supplemented with additional Group VIII metal in water-soluble form to achieve increased levels of such metal in the final catalyst. Furthermore, uncalcined catalyst carriers impregnated with the stable solution and subsequently shaped, dried and calcined, have unexpectedly improved performance when used in the hydroprocessing of heavy hydrocarbon feedstocks. High conversion can be achieved at reduced levels of sediment, especially in comparison to standard commercial catalysts.

대표청구항 ▼

The invention claimed is: 1. A hydrocarbon conversion process comprising contacting a hydrocarbon oil with a particulate catalyst under conditions of elevated temperature above 600° F. and pressure above 500 p.s.i.g, and with hydrogen, said catalyst comprising at least one catalytically active metal

The invention claimed is: 1. A hydrocarbon conversion process comprising contacting a hydrocarbon oil with a particulate catalyst under conditions of elevated temperature above 600° F. and pressure above 500 p.s.i.g, and with hydrogen, said catalyst comprising at least one catalytically active metal from Group VIB of the periodic table, at least one catalytically active metal from Group VIII of the periodic table, and phosphorous, wherein: (1) said metals and phosphorous are carried on a foraminous carrier; (2) the pore mode is about 40 to about 90 Å; (3) the loss in weight on ignition at 1000° F. to 1200° F. of said catalyst is less than about 5 wt. % based on the weight of the catalyst; (4) the ASI ratio is greater than about 0.75 to about 2.0; and (5) said catalyst is prepared from a stabilized aqueous catalyst carrier impregnating composition comprising: (A) at least one substantially water insoluble Group VIII metal component; (B) at least one substantially water-soluble, phosphorous-containing acidic component in an amount insufficient to cause dissolution of said Group VIII metal component; and (C) at least one Group VIB metal component.