Abstract: The present invention concerns a process for hydrocyanating ethylenically unsaturated organic compounds to compounds containing at least one nitrile function. It relates more particularly to the hydrocyanation of diolefins such as butadiene or of substituted olefins such as alkenenitriles, for instance pentenenitriles. According to the process of the invention the reaction is implemented in the presence of a metal complex catalyst comprising a transition metal such as nickel and an organic ligand.

Abstract: The present invention relates to a process for hydrocyanating a hydrocarbon-based compound containing at least one ethylenic unsaturation by reaction in liquid medium with hydrogen cyanide in the presence of a catalyst comprising a metal element chosen from transition metals and an organophosphorus ligand, characterized in that the organophosphorus ligand is a monodentate organophosphorus compound. The present invention is in particular useful for the synthesis of adiponitrile from butadiene.

Abstract: The present invention concerns a process for hydrocyanating ethylenically unsaturated organic compounds to compounds containing at least one nitrile function. It relates more particularly to the hydrocyanation of diolefins such as butadiene or of substituted olefins such as alkenenitriles, for instance pentenenitriles. According to the process of the invention the reaction is implemented in the presence of a metal complex catalyst comprising a transition metal such as nickel and an organic ligand.

Abstract: The present invention concerns a process for hydrocyanating ethylenically unsaturated organic compounds to compounds containing at least one nitrile function. It relates more particularly to the hydrocyanation of diolefins such as butadiene or of substituted olefins such as alkenenitriles, for instance pentenenitriles. According to the process of the invention the reaction is implemented in the presence of a metal complex catalyst comprising a transition metal such as nickel and an organic ligand.

Abstract: The present invention relates to a process for hydrocyanating a hydrocarbon-based compound containing at least one ethylenic unsaturation by reaction in liquid medium with hydrogen cyanide in the presence of a catalyst comprising a metal element chosen from transition metals and an organophosphorus ligand, characterized in that the organophosphorus ligand is a monodentate organophosphorus compound. The present invention is in particular useful for the synthesis of adiponitrile from butadiene.

Abstract: The present invention concerns a process for hydrocyanating ethylenically unsaturated organic compounds to compounds containing at least one nitrile function. It relates more particularly to the hydrocyanation of diolefins such as butadiene or of substituted olefins such as alkenenitriles, for instance pentenenitriles. According to the process of the invention the reaction is implemented in the presence of a metal complex catalyst comprising a transition metal such as nickel and an organic ligand.

Abstract: The present invention concerns a process for hydrocyanating ethylenically unsaturated organic compounds to compounds containing at least one nitrile function. It relates more particularly to the hydrocyanation of diolefins such as butadiene or of substituted olefins such as alkenenitriles, for instance pentenenitriles. According to the process of the invention the reaction is implemented in the presence of a metal complex catalyst comprising a transition metal such as nickel and an organic ligand.

Abstract: The present invention concerns a process for hydrocyanating ethylenically unsaturated organic compounds to compounds containing at least one nitrile function. It relates more particularly to the hydrocyanation of diolefins such as butadiene or of substituted olefins such as alkenenitriles, for instance pentenenitriles. According to the process of the invention the reaction is implemented in the presence of a metal complex catalyst comprising a transition metal such as nickel and an organic ligand.

Abstract: The invention relates to a process for the production of gasoline with a low sulfur content comprising at least three stages: a first stage in which the sulfur-containing compounds present in the gasoline are at least partially transformed into H2S and into saturated sulfur-containing compounds; a second stage whose purpose is to eliminate the H2S from the gasoline produced in the first stage; and a third stage in which the saturated sulfur-containing compounds remaining in the gasoline are transformed into H2S. The process according to the invention optionally also comprises a pretreatment stage whose purpose is to hydrogenate the diolefins of the feedstock before the first stage.

Abstract: A process for the production of allyl succinic anhydride comprising reacting a mixture of propene with maleic anhydride in the presence of a catalyst comprised of an alkyl tin chloride as provided. The process can be run efficiently at temperatures below about 200° C. without and the formation of polymer or decomposition by-products.

Abstract: The invention relates to a process for the production of gasoline with a low sulfur content that comprises at least the following stages: a1) at least a selective hydrogenation of diolefins, a2) optionally at least one stage that is aimed at increasing the molecular weight of the light sulfur-containing products that are present in the gasoline, b) at least one separation of the gasoline that is obtained in stage a1 or a2 into two fractions: light gasoline and heavy gasoline, c) at least one treatment with heavy gasoline that is separated in stage b on a catalyst that makes it possible to decompose or to hydrogenate at least partially the unsaturated sulfur-containing compounds, d) at least one treatment of the heavy gasoline that is obtained in stage c, without eliminating the H2S that is formed during this stage, on a catalyst that makes it possible to decompose the sulfur-containing compounds and more preferably the linear and/or cyclic saturated compounds.

Abstract: A process for eliminating mercury and possibly arsenic from a hydrocarbon feed comprises: 1) distilling the hydrocarbon feed to obtain at least one light cut and at least one heavy cut; 2) treating at least one said heavy cut, said treatment comprising two steps a first step bringing said heavy cut into contact with hydrogen and a catalyst; a second step consisting of passing the effluent from the first step over a mass for capturing mercury and possibly arsenic.

Abstract: An apparatus for the production of gasolines with a low sulphur content from a catalytic cracking gasoline, comprising a fractionation column (1) provided with a line (2) for introducing raw gasoline from a catalytic cracking step and comprising at least two lines, one (3) in the upper portion of the column for taking off a light cut, and the other (4) in the lower portion of the column for taking off the heavy cut; a zone (5) for hydrotreatment in the presence of hydrogen, comprising a catalytic bed, an inlet line (6) for the light gasoline cut to be treated, said line being connected either to the fractionation column (I), or to the zone (7) for treatment over a palladium catalyst, said hydrotreatment zone also comprising an outlet line (8) for hydrotreated effluent; a stripping zone (9) comprising a line for introducing light hydrotreated gasoline, a line (10) for evacuating H2S and an outlet line (11) for stripped light gasoline; and said apparatus also comprising at least one of the following sweetening

Abstract: The invention relates to a process of producing gasoline with a low sulphur content from a feedstock containing sulphur. This process comprises at least one step a1 of selectively hydrogenating the diolefins and acetylenic compounds, at least one separation of the gasoline (step b) obtained at step a1 into at least three fractions, at least one step c1 of treating the heavy gasoline separated at step b on a catalyst enabling the unsaturated sulphur compounds to be at least partially decomposed or hydrogenated and at least one step d to remove the sulphur and nitrogen from at least one intermediate fraction, followed by catalytic reforming.

Abstract: A process for the production of allyl succinic anhydride comprising reacting a mixture of propene with maleic anhydride in the presence of a catalyst comprised of an alkyl tin chloride as provided. The process can be run efficiently at temperatures below about 200° C. without and the formation of polymer or decomposition by-products.

Abstract: A process for capturing mercury and possibly arsenic comprising at least: a) vaporising (or flashing, step a1) then condensing a hydrocarbon-containing feed (step a2) without separating said feed; b) treating the effluent from step a2 comprising at least one step for bringing said effluent into contact with hydrogen and a catalyst, and optionally capturing arsenic; c) a step consisting in passing the effluent from step b) over a mercury capture mass.

Abstract: An apparatus for the purification of catalytic cracking gasolines containing dienic and/or acetylenic impurities, and mercaptans, said apparatus comprising at least one selective hydrogenation reactor 3 containing at least one fixed catalyst bed, and having at least one line 1 for introducing a feed, at least one effluent outlet line, and a line supplying hydrogen to the reactor, said reactor being followed by at least one stabilization drum 4 connected to said effluent outlet line, the drum having at least one gas outlet line 5 and at least one stabilized effluent outlet line, and said effluent passing into at least one sweetening reactor 8 comprising at least one effluent inlet line 6 and at least one effluent outlet line, said reactor having close thereto at least one oxidizing agent supply line, said apparatus also comprising at least one drum 9 for degassing the effluent from the sweetening reactor 8, said drum 9 having at least one gas outlet line and at least one outlet line 11 for dedienized, stabiliz

Abstract: Process for the production of gasoline with a low sulfur content that comprises at least the following two stages: a) a hydrogenation stage of the unsaturated sulfur containing compounds, b) a decomposition stage of saturated sulfur containing compounds, and optionally a preliminary stage for pretreatment of the feedstock such as selective hydrogenation of dienes.

Abstract: A process for production, from an olefinic C4 fraction, on the one hand, of high-purity isobutene and, on the other hand, of propylene by metathesis is described. The process comprises three successive stages: 1) the selective hydrogenation of butadiene with isomerization of butene-1 into butene-2 up to thermodynamic equilibrium; 2) the separation by isobutene at the column head that integrates the hydroisomerization of n-butenes, allowing a butene-2 fraction at the bottom, and 3) the metathesis of the butene-2 fraction with ethylene. By this process, it is possible to produce in a very selective way high-purity isobutene and polymerization-quality propylene.

Abstract: A catalyst for selective hydrogenation of unsaturated diolefinic and styrenic compounds in gasolines without hydrogenating the aromatic and mono-olerinic compounds is described. It can also eliminate marcaptans when they are present in these gasolines. The catalyst comprises particulate support on which palladium is deposited, distributed at the periphery of the catalyst particles, and at least one metal selected from molybdenum and tungsten, in the form of at least one oxide.