Hydrotreating catalyst and process

Details Hydrotreating catalyst and process Hydrotreating catalyst and process

B - Operations, Transporting

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252/39, 196/54

B01J 23/85 (2006.01) B01J 27/049 (2006.01) B01J 32/00 (2006.01) B01J 35/10 (2006.01) B01J 37/26 (2006.01) C10G 45/60 (2006.01) C10G 65/08 (2006.01) B01J 27/125 (2006.01) B01J 27/132 (2006.01) B01J 37/00 (2006.01)

Patent

CA 1334194

A hydrotreating catalyst is described which comprises at least one Group VI metal, metal oxide, or metal sulfide, and at least one Group VIII metal, metal oxide, or metal sulfide, supported on a carrier wherein (A) the catalyst comprises from about 10% to about 35% by weight of combined metal, and the atomic ratio of the Group VIII metal to Group VI metal is in the range of from about 0.5:1 to about 2:1; (B) the carrier comprises from about 0.5 to about 10 weight percent of halogen, from about 0.5 to about 5% by weight of silica and from about 85 to about 99% of alumina; and (C) the catalyst is characterized as having a median pore radius of from about 30 to about 65 Angstroms, and a surface area of from about 120 to about 180 m2/g. Also described are novel and improved procedures for preparing the carrier or support used to prepare the catalysts. The catalyst is useful in the production of lubricating oils from crude hydrocarbon oil stocks in that the hydrotreating process results in the formation of oils having increas- ed viscosity indexes, reduced aromatic content and improved stability. The nitrogen and sulfur contents of the oils also are reduced through the use of the catal- yst in the hydrogenation process.

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