Hydroconversion process employing a phosphorus loaded NiMo catal

Details Hydroconversion process employing a phosphorus loaded NiMo catal Hydroconversion process employing a phosphorus loaded NiMo catal

1995-08-24

1999-10-19

Griffin, Walter D.

Mineral oils: processes and products

Refining

Sulfur removal

208251H, 208254H, 208112, C10G 4702, C10G 4504

Patent

active

059683481

ABSTRACT:
A process for converting a charge of heavy hydrocarbons containing components boiling above 1000.degree. F. to a product containing a decreased content of components boiling above 1000.degree. F. and decreased sediment content employing a NiMo catalyst having a specified pore distribution under hydroconversion conditions is disclosed. The process includes contacting the charge of heavy hydrocarbon with hydrogen in the presence of a heterogeneous catalyst supported on alumina and containing .ltoreq.2.5 wt % of silica and bearing 2.2 to 6 wt % of a Group VIII metal oxide, 7 to 24 wt % of a Group VIB metal oxide and 0.3 to 2 wt % of a loaded phosphorus oxide, the phosphorous being loaded onto the catalyst as aqueous phosphoric acid. The catalyst also may be characterized by having a Total Surface Area of 175 to 205 m.sup.2 /g, a Total Pore Volume of 0.82 to 0.98 cc/g, and a Pore Diameter Distribution wherein 29.6 to 33.0% of the Total Pore Volume is present as macropores of diameter greater than 250 .ANG., 67.0 to 70.4% of the Total Pore Volume is present as micropores of diameter less than 250 .ANG., .gtoreq.65% of the micropore volume is present as micropores of diameter .+-.25 .ANG. about a pore mode by volume of 110 to 130 .ANG., less than 0.05 cc/g of micropore volume is present in micropores with diameters less than 80 .ANG..

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