초록 ▼

The invention relates to a process for treating a new or regenerated catalyst containing a support having as a base at least one metal or metalloid oxide and at least one active metal, comprising treating the catalyst with at least one sulfuration agent dissolved in a solvent. The invention is charc

The invention relates to a process for treating a new or regenerated catalyst containing a support having as a base at least one metal or metalloid oxide and at least one active metal, comprising treating the catalyst with at least one sulfuration agent dissolved in a solvent. The invention is charcterized in that the sulfuration agent is a polysulfide with the following general formula R′－Sy－R－Sx －R－Sy)nR′ where R is a linear or a branched organic radical comprising from 2 to 12 carbon atoms; R′is an alkyl, alkenyl, arylalkyl or arylalkenyl radical comprising from 1 to 12 carbon atoms, R′possibly comprising at least one heteroatom selected from the group consisting of oxygen, nitrogen, and sulfur; x has a value of from 1 to 4; y has a value of from 1 to 8 and n is such that the average molar mass of the polymer is about 5000.

대표청구항 ▼

A process for sulfurizing a new or regenerated hydrocarbon refining or hydroconversion catalyst containing a support which is at least one metal or metalloid oxide and at least one active metal, said process being conducted in the absence of hydrogen, wherein said catalyst is treated with at least o

A process for sulfurizing a new or regenerated hydrocarbon refining or hydroconversion catalyst containing a support which is at least one metal or metalloid oxide and at least one active metal, said process being conducted in the absence of hydrogen, wherein said catalyst is treated with at least one sulfurizing agent dissolved in a solvent, said agent being obtained by a process comprising: (a) reacting at least one compound selected from the group consisting of sulfur chloride and sulfur dichloride with at least one olefin or olefin mixture containing 2 to 12 atoms of carbon per molecule, to form an adduct; (b) mixing said adduct with at least one monohalogenated hydrocarbon compound; (c) reacting the product of step (b) with at least one alkali metal, ammonium or alkaline earth metal sulfide, hydrogensulfides, or polysulfide in an aqueous and/or alcoholic medium to form an olefin polysulfide containing from about 20 to about 70% by weight of sulfur.