Abstract: The invention relates to a process for the pretreatment of a light olefin fraction, or of a mixture of such fractions, for the purpose of selectively removing the isobutene and butadiene present.In accordance with the invention, the olefin fraction is contacted with boron trifluoride in the gas phase, under such conditions and for such a length of time that the isobutene and the butadiene will polymerize selectively, and the boron trifluoride and the isobutene and butadiene polymers obtained are then conventionally separated from the effluent.

Abstract: A process for the oligomerization of olefin fractions where boron trifluoride in the gas phase is contacted with such a fraction, in the absence of a catalyst carrier, under such conditions and for such a length of time that the isobutene and/or butadiene present will polymerize; the boron trifluoride and the isobutene and/or butadiene polymers obtained are then conventionally separated from said fraction; and the olefins of the fraction so purified are oligomerized in the presence of a boron trifluoride catalyst comprising a catalyst carrier.

Abstract: A catalyst suited for use in the sweetening of petroleum distillates (by oxidizing mercaptans to disulfides) which is formed of a metal complex of a polyaminoalkylpolycarboxylic acid deposited directly on a basic anion exchange resin. The method of making the source by exchanging a metal cation on an acidic resin; forming a complex by the action of a polyaminoalkylpolycarboxylic acid upon said resin; and exchanging the complex so formed on a basic anion exchange resin.

Abstract: A catalyst suited for use in the sweetening of petroleum distillates (by oxidizing mercaptans to disulfides) which is formed of a metal complex of a polyaminoalkylpolycarboxylic acid deposited directly on a basic anion exchange resin. The method of making the source by exchanging a metal cation on an acidic resin; forming a complex by the action of a polyaminoalkylpolycarboxylic acid upon said resin; and exchanging the complex so formed on a basic anion exchange resin.

Abstract: These catalysts comprise:A refractory oxide-mineral carrier;a halogen element, present in combined form; and,in free or combined form,(a) a platinum-group metal, and(b) tin.They are characterized in that they contain, moreover, a metal from groups Ia and IIa of the periodic table of the elements.Specifically, said metal from groups Ia and IIa may be sodium, lithium, potassium, calcium or barium.

Abstract: These catalysts comprise: A refractory oxide-mineral carrier; a halogen element, present in combined form; and, in free or combined form,(a) a platinum-group metal, m1(b) tin,and additionally a metal, M1, from groups Ia and IIa of the periodic table of the elements in such an amount that: 0.2.ltoreq.M2/M1.ltoreq.10.Specifically, said metal from groups Ia and IIa may be sodium, lithium, potassium, calcium or barium.

Abstract: Hydrocarbon isomerization catalysts comprising typically refractory mineral oxide carrier such as alumina and a halogen element present in combined form, together with, in the free or combined state:A platinum-group metal;second element from the group consisting of titanium, zirconium, tungsten and molybdenum; anda metal halide such as AlCl.sub.3.

Abstract: Catalysts particularly useful for hydroreforming and isomerization of hydrocarbons formed of a refractory mineral oxide carrier having a halogen in combined form and the following metals in free or combined state:(a) A metal from the platinum group (0.02 to 2%);(b) tin (0.02 to 2%); and(c) at least one metal selected from the group of scandium, yttrium, thorium, uranium, and the rare earths metals (0.01 to 5%)--said percentages being based upon the total weight of the catalyst, said catalyst preferably having platinum and chlorine. Also the use of said catalyst in the aforementioned hydrotreatments.

Abstract: The improvement of the preferred Pt-Sn on alumina bimetallic catalyst (and similar catalysts) for hydrotreatment of hydrocarbons, comprising the catalyst further containing silicon in combined form.

Abstract: Hydrocarbon isomerization catalysts comprising typically refractory mineral oxide carrier such as alumina and a halogen element present in combined form, together with, in the free or combined state:a platinum-group metal;second element from the group consisting of titanium, zirconium, tungsten and molybdenum; anda metal halide such as AlCl.sub.3.

Abstract: In a combined process for the storage and production of hydrogen from a hydrogen reserve containing magnesium in the free or combined state, said process consisting of storing the hydrogen in the supply, decomposing the supply to produce hydrogen, and reconstituting the supply of hydrogenation; the use of a dope comprising two elements in the free or combined state selected from the group consisting of cerium, nickel, titanium and molybdenum.Said process may be applied to hydrogen reserves used to fuel internal-combustion engines and for similar applications.

Abstract: The preparation of hydrogen reserves by mixing magnesium with at least one other appropriate element, compacting the mixture obtained, and hydrogenating it. Such additional element includes at least one element selected from the group consisting of group IIIB, including the rare earths, and groups IVB, VIB, VIIB, VIII, and IA of the periodic table.In particular, the mixture is subjected to a heat treatment between the compacting and hydrogenation steps.Such reserves prepared have reversible capacities even at moderate temperatures.

Abstract: The improvment of the preferred Pt-Sn on alumina bimetallic catalyst (and similar catalysts) for hydrotreatment of hydrocarbons, comprising the catalyst further containing silicon in combined form.

Abstract: The processes of the present invention employ catalysts in the hydrotreatment of hydrocarbons and comprise, on a refractory inorganic oxide support, the following metals:(a) from 0.02 to 2% of at least one platinum metal;(b) from 0.02 to 2% of at least one metal belonging to the group consisting of zirconium, titanium, and tungsten;(c) from 0.02 to 2% tin.This catalyst is preferably halogenated, typically with chlorine, from 0.4 to 2%.The preferred process according to this invention is the isomerization of a charge of alkylaromatic hydrocarbons, and particularly those having eight carbon atoms. The preferred isomerization catalyst is a platinum, tin and zirconium trimetallic catalyst halogenated with chlorine approximately from 1 to 2% based on the total catalyst weight.

Abstract: A catalyst useful for the hydrotreatment of hydrocarbons comprising, on a refractory inorganic oxide support, the following metals:(a) from 0.02 to 2% of at least one platinum metal;(b) from 0.02 to 2% of at least one metal belonging to the group consisting of zirconium, titanium, and tungsten;(c) from 0.02 to 2% tin.This catalyst is preferably halogenated, typically with chlorine, from 0.4 to 2%.Catalysts according to this invention are particularly useful for isomerization of a charge of alkylaromatic hydrocarbons, and particularly those having eight carbon atoms. The preferred isomerization catalyst is a platinum, tin and zirconium trimetallic catalyst halogenated with chlorine approximately from 1 to 2% based on the total catalyst weight.Said catalysts are also useful for hydroreforming and aromatizing being surprisingly superior for all these types of reactions.

Abstract: Novel hydrotreating catalysts, including methods of making and using same, which are a combination of platinum group metals with Sn and with Mn, Mo, and/or Cr, and optionally with a halogen and sulfur; on a refractory mineral oxide carrier.

Abstract: Catalysts are disclosed for the hydrotreatment of hydrocarbons, and particularly for reforming, which contain no platinum and which consist of:A refractory-mineral carrier (alumina).0.05 to 5 wt. % of at least one first metal from the group consisting of iron, cobalt, and nickel.At least one second metal from the group consisting of tin (0.01 to 5%), lead (0.01 to 10%), and germanium (0.01 to 4%).Possibly from 0.01 to 0.5% of sulfur.Processes for preparation of these catalysts, by impregnation, and for their use are disclosed. It is preferable to deposit the metal (or the metals) from the tin-germanium-lead group before the metal or metals from the iron-cobalt-nickel group are deposited.

Abstract: Catalysts particularly useful for hydroreforming and isomerization of hydrocarbons formed of a refractory mineral oxide carrier having a halogen in combined form and the following metals in free or combined state:A. A metal from the platinum group (0.02 to 2%);B. tin (0.02 to 2%); andC. at least one metal selected from the group of scandium, yttrium, thorium, uranium, and the rare earths metals (0.01 to 5%) -- said percentages being based upon the total weight of the catalyst, said catalyst preferably having platinum and chlorine. Also the use of said catalyst in the aforementioned hydrotreatments.

Abstract: Isomerization catalysts for hydrocarbons, and particularly for normal paraffins and/or naphthenes, formed of the following:At least one platinum-group metal, preferably platinum;At least one element selected from the group consisting of rare earth metals and yttrium; andAt least one metal halide, for example aluminum trichloride,A carrier for the foregoing metals and halide which is formed in whole or in part of at least one refractory mineral oxide, such as alumina, and additionally a halogen in combined form, preferably chlorine.

Abstract: A catalyst useful for the hydro-treatment of hydrocarbons comprising, on a refractory inorganic oxide support, the following metals:A. from 0.02 to 2% of at least one platinum metal;B. from 0.02 to 2% of at least one metal belonging to the group consisting of zirconium, titanium, and tungsten;C. from 0.02 to 2% tin.This catalyst is preferably halogenated, typically with chlorine, from 0.4 to 2%.