A catalyst for hydrotreatment of gas oil containing defined amounts of
platinum, palladium, and in a support of an inorganic oxide containing a
crystalline alumina having a crystallite diameter of from 20 to 40 .ANG..
A method for hydrotreating gas oil containing an aromatic compound in the
presence of the above catalyst at defined conditions. A method for
catalytically hydrotreating gas oil (b.p. 160-400.degree. C.) or blend
oil, in a first desulfurization step at defined conditions using a
catalyst with at least one Group 6a and Group 8 metal in a support of an
inorganic oxide to regulate to a defined sulfur-containing compound
content, and then carrying a second desulfurization step by catalytic
reaction of the oil at defined conditions using a catalyst of platinum,
palladium, and halogen with a support containing an alumina.
