초록 ▼

Catalysts for the treatment of hydrocarbons are presulfurized or presulfided ex-situ, in the absence of hydrogen, by means of a polysulfide of the general formula R－S(n)－R′wherein n is an interger from 3 to 20 and R and R′are each an organic radical having from 1 to 150 carbon atoms, R′being optiona

Catalysts for the treatment of hydrocarbons are presulfurized or presulfided ex-situ, in the absence of hydrogen, by means of a polysulfide of the general formula R－S(n)－R′wherein n is an interger from 3 to 20 and R and R′are each an organic radical having from 1 to 150 carbon atoms, R′being optionally a hydrogen atom, the so-presulfurized or presulfided catalysts being subsequently activated with hydrogen during their use in the hydrotreatment process of a hydrocarbon charge, i.e. in-situ. An aldehyde or an alcohol or a ketone, an ether or an organic acid, may be added, as promoter, to the polysulfide.

대표청구항 ▼

A process for the treatment of a new or regenerated catalyst containing (a) a carrier on the basis of at least one metal or metalloid oxide and (b) at least one active metal, said process comprising treating the new or regenerated catalyst “ex situ”, externally of a reaction zone, by means of at lea

A process for the treatment of a new or regenerated catalyst containing (a) a carrier on the basis of at least one metal or metalloid oxide and (b) at least one active metal, said process comprising treating the new or regenerated catalyst “ex situ”, externally of a reaction zone, by means of at least one sulfuration agent introduced as a solution in an organic solvent, in the required amount, into the catalyst pores, said agent having the formula: R－S(n)－R′ wherein n is an integer from 3 to 20, and radicals R and R′, identical or different, are each an organic radical containing 1 to 150 carbon atoms per molecule, said radicals being selected from saturated or unsaturated, linear or branched, alkyl radicals or radicals of the naphthenic type, aryl radicals, alkylaryl radicals and arylalkyl radicals, R′being alternatively a hydrogen atom.