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: The invention concerns a process for eliminating arsenic from a hydrocarbon cut in which said cut is brought into contact with an absorption mass that is at least partially pre-sulfurized and comprises a support and lead oxide. The support, for example alumina, or said mass preferably has a specific surface area in the range 10 to 300 m2/g, a total pore volume in the range 0.2 to 1.2 cm3/g and a macroporous volume in the range 0.1 to 0.5 cm3/g. The lead content of said mass, expressed as lead oxide, is preferably in the range of 5% to 50% by weight. The fraction of the sulfurized mass preferably represents at least {fraction (1/20)}th of the total volume of the absorption mass.

Abstract: Process for the production of gasoline with a low sulfur content that comprises at least the following two stages:

Abstract: A novel supported bimetallic catalyst comprises a group VIII metal such as platinum, and tin, at least a portion of which interacts strongly with the group VIII metal in the catalyst in the reduced state. In the partially oxidized state, the catalyst of the invention contains at least 10% of tin in the form of a reduced tin species with oxidation state 0, said species having an isomer shift in the range 0.80 to 2.60 mm/s and a quadrupolar splitting in the range 0.65 to 2.00 mm/s. The invention also concerns the preparation of said catalyst, and processes using said catalyst for transforming hydrocarbons into aromatic compounds, such as gasoline reforming processes and aromatic production processes.

Abstract: The present invention relates to a catalyst which can be used in a process involving a conversion reaction for organic compounds, containing at least one support and at least one metal, and characterized in that it has particles of an average size greater than approximately 1 nm, and more than 80% of particles, the size of which is comprised in the range D±(D.0.2) where D represents the average size of the particles. It also relates to the process for preparing this catalyst which consists of preparing a colloidal suspension, in aqueous phase, of the metal oxide or metals to be supported, then depositing this suspension on a support, and optionally reducing the oxide thus supported.

Abstract: A process for dehydrogenating organic compounds, in particular paraffins and naphthenes, is carried out in the presence of a supported catalyst comprising a group VIII metal such as platinum, and tin, at least a portion of which interacts strongly with the group VIII metal in the catalyst in the reduced state. In the partially oxidised state, the catalyst contains at least 10% of tin in the form of a reduced tin species with oxidation state 0, said species having an isomer shift in the range 0.80 to 2.60 mm/s and a quadrupolar splitting in the range 0.65 to 2.00 mm/s.

Abstract: A catalyst comprising at least one support, at least one element from groups 8, 9 or 10 of the periodic table, at least one element from group 14 of the periodic table, at least one element from group 13 of the periodic table, at least one alkali or alkaline-earth metal, and, optionally, at least one halogen in an amount in the range from 0 to 0.2% by weight with respect to the total catalyst weight, the catalyst being characterized in that the accessibility of the element from groups 8, 9 or 10 is more than 50%. The invention also concerns a process for preparing a catalyst and the use of the catalyst in a process for dehydrogenating paraffins containing 3 to 22 carbon atoms per molecule.

Abstract: In a catalyst process involving a conversion reaction for organic compounds, e.g. hydrogenations, the catalyst contains at least one support and at least one metal, and is characterized in that it has particles of an average size greater than approximately 1 nm, and more than 80% of particles, the size of which is comprised in the range D±(D.0.2) where D represents the average size of the particles. The catalyst is prepared in a colloidal suspension, in aqueous phase, of the metal oxide or metals to be supported, then depositing this suspension on a support, and optionally reducing the oxide thus supported.

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.

Abstract: The invention relates to a process for the production of gasoline with a low sulfur content that comprises at least the following stages:

Abstract: A process for eliminating mercury and possibly arsenic from a hydrocarbon feed comprises:

Abstract: A process for capturing mercury and possibly arsenic comprising at least:

Abstract: A process for the preparation of a catalyst is described, said catalyst comprising at least one inorganic refractory support, at least one halogen or halogenated compound at a content greater than 0.1% by weight, at least one metal from group VIII of the periodic classification (platinum, palladium, nickel and ruthenium) and at least one additional metal M selected from germanium, tin, lead, iron, titanium and chromium. The process is characterised in that said metal M is introduced in the form of at least one orqanometallic complex. The catalyst prepared in accordance with the invention may be used for dehydrogenation reactions, particularly of paraffinic hydrocarbons and olefinic hydrocarbons.

Abstract: A process for dehydrogenating organic compounds, in particular paraffins and naphthenes, is carried out in the presence of a supported catalyst comprising a group VIII metal such as platinum, and tin, at least a portion of which interacts strongly with the group VIII metal in the catalyst in the reduced state. In the partially oxidised state, the catalyst contains at least 10% of tin in the form of a reduced tin species with oxidation state 0, said species having an isomer shift in the range 0.80 to 2.60 mm/s and a quadrupolar splitting in the range 0.65 to 2.00 mm/s.

Abstract: A novel supported bimetallic catalyst comprises a group VIII metal such as platinum, and tin, at least a portion of which interacts strongly with the group VIII metal in the catalyst in the reduced state. In the partially oxidized state, the catalyst of the invention contains at least 10% of tin in the form of a reduced tin species with oxidation state 0, said species having an isomer shift in the range 0.80 to 2.60 mm/s and a quadrupolar splitting in the range 0. 65 to 2.00 mm/s.

Abstract: The invention provides a process for converting hydrocarbons in which said feed is treated in a distillation zone associated with a reaction zone, the feed for the reaction zone being drawn off at the height of at least one draw-off level, the effluent from the reaction zone being re-introduced into the distillation zone at the height of a re-introduction level, said process being characterized in that a liquid effluent is also withdrawn from the distillation zone at the height of a withdrawal level, said liquid effluent being treated in a gas-liquid side separation zone (splitter), the gaseous effluent being re-introduced into the distillation zone and the liquid effluent being recovered as an intermediate cut. This process can be used to reduce the benzene content of a hydrocarbon cut and to recover a naphtha cut.

Abstract: The present invention relates to a catalyst which can be used in a process involving a conversion reaction for organic compounds, containing at least one support and at least one metal, and characterized in that it has particles of an average size greater than approximately 1 nm, and more than 80% of particles, the size of which is comprised in the range D±(D.0.2) where D represents the average size of the particles. It also relates to the process for preparing this catalyst which consists of preparing a colloidal suspension, in aqueous phase, of the metal oxide or metals to be supported, then depositing this suspension on a support, and optionally reducing the oxide thus supported.

Abstract: A process for producing a gasoline with a low sulphur content comprises: separating a sulphur-containing gasoline into a light fraction and a heavy fraction, hydrodesulphurising the light gasoline on a nickel-based catalyst, hydrodesulphurising the heavy fraction on a catalyst comprising at least one group VIII metal and/or at least one group VIB metal, and mixing the desulphurised fractions.

Abstract: An aliphatic alkylate with a high octane number is prepared from a C4 catalytic cracking or steam-cracking fraction that contains mainly isobutane, isobutene, butene-1 and butenes-2 by: (a) hydro-isomerizing said C4 fraction, obtaining a mixture that contains for the most part butenes-2, isobutene and isobutane; (b) separating, by distillation of the hydro-isomerized fraction, of a butene-2-rich effluent that is collected at the bottom and an isobutane- and isobutene-rich effluent that is collected at the top; (c) sending said isobutene- and isobutane-rich effluent into a hydrogenation zone that produces an effluent that for the most part contains isobutane; (d) sending of said butenes-2-rich effluent that is derived from (b) and of said effluent that for the most part contains the isobutane that is derived from (c) into an alkylation zone producing, by addition of isobutane to butenes-2, an isooctane mixture that contains excess isobutane; (e) separating by distillation of excess isobutane, which comes

Abstract: A process for capturing mercury and possibly arsenic comprising at least: