Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Halogen or compound containing same
Patent
1988-05-23
1990-09-18
Dees, Carl F.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Halogen or compound containing same
502221, 502229, 502254, 502258, 502263, B01J 2712
Patent
active
049578952
ABSTRACT:
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 m.sup.2 /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 increased viscosity indexes, reduced aromatic content and improved stability. The catalysts of this invention can be used effectively in either or both stages of a two-stage hydrotreating process or in a single stage hydrotreating process. The nitrogen and sulfur contents of the oils also are reduced through the use of the catalyst in the hydrogenation process.
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McMahon Steven L.
Nebesh Eugene
Plundo Robert A.
Dees Carl F.
The Harshaw Chemical Company
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