Abstract: Described is a process for the treatment of at least one zeolite having a pore size of less than or equal to 7 ? comprising at least a) a step for dealumination of said zeolite, b) a cationic exchange step using at least one cation other than H+, c) a step for treatment of said zeolite obtained in step b) in the presence of at least one molecular compound containing at least one silicon atom, and d) at least one heat treatment step. The present invention also concerns the preparation of a catalyst containing the zeolite treated in accordance with the treatment process the subject-matter of the invention and the use of said catalyst in a process for the oligomerization of an olefinic charge containing hydrocarbon molecules having from 2 to 12 carbon atoms per molecule.

Abstract: The invention describes a porous composite material that comprises a porous substrate based on a refractory inorganic oxide in which said substrate has a zeolite crystal content that is less than 25% by mass, whereby said crystals are dispersed homogeneously in the pores of said substrate, and the distribution coefficient that is measured by Castaing microprobe is between 0.75 and 1.25, and in which the total pore volume of said substrate represents at least 40% of the initial total pore volume of the substrate, and the mean diameter of the pores represents at least 50% of the mean diameter of the pores of the initial substrate, its process for preparation and its use as catalyst in the hydrocarbon feedstock conversion reactions.

Abstract: The invention relates to a catalyst that comes in the form of grains, each grain consisting of a core covered by at least one external layer, the core consisting of an acidic porous solid and having a size of between 0.1 micron and 0.4 millimeter, in which the external layer has a uniform thickness with a uniformity criterion C, which is less than 0.30, whereby said uniformity criterion C is defined as being equal to an average, on a number N of catalyst grain samples, of the ratio of the difference between the maximum thickness, Eimax, of the external layer and the minimum thickness, Eimin, of this same layer to the average of these two thicknesses Eimax and Eimin.

Abstract: Process for hydrocracking and/or hydrotreatment of hydrocarbon feeds utilizing a catalyst comprising at least one hydro-dehydrogenating element of group VIB and of non-precious group VIII used alone or mixed, and a support comprising at least one porous mineral matrix and at least one dealuminated USY zeolite having an overall silicon-to-aluminium atomic ratio comprised between 2.5 and 10, a fraction by weight of extra-network aluminium atom greater than 10% relative to the total mass of the aluminium present in the zeolite, a mesopore volume measured by nitrogen porosimetry greater than 0.07 ml.g?1, and a crystal parameter a0 of the elemental mesh greater than 24.28 ?, in which a quantity of the element nickel comprised between 0.5 and 3% by weight relative to the total mass of the zeolite is deposited on said USY zeolite and in which said catalyst is in the sulphide form.

Abstract: A process for oligomerizing an olefinic hydrocarbon feed is described which consists of bringing said feed into contact with a catalyst comprising a silica-alumina, the silica content of said catalyst being in the range 5% to 95% by weight, said catalyst being prepared using a process comprising at least: a) mixing at least one alumina compound which is partially soluble in an acid medium with either at least one silica compound which is completely soluble in the reaction mixture or a combination formed by at least one silica compound and at least one alumina compound, said silica and alumina compounds being completely soluble in the reaction mixture, in order to form a solid precursor of said catalyst; b) hydrothermal treatment of the solid derived from step a) by calcining in moist air for a period in the range 4 to 7 hours.

Abstract: The present invention relates to a catalyst comprising at least one IZM-2 zeolite, at least one amorphous matrix, at least one hydro-dehydrogenating element selected from the group formed by the elements from group VIB and from group VIII of the periodic table and excluding platinum and palladium. The catalyst also optionally contains a controlled quantity of at least one doping element selected from phosphorus, boron and silicon, optionally at least one element from group VB of the periodic table of the elements, and optionally a group VIIA element. The invention also relates to hydrocracking and hydrotreatment processes implementing this catalyst.

Abstract: A catalyst that comprises at least one binder and at least one crystallized material with hierarchized and organized porosity in the fields of microporosity and mesoporosity is described, whereby said crystallized material consists of at least two elementary spherical particles, each of said particles comprising a mesostructured silicon-oxide-based matrix that has a mesopore diameter of between 1.5 and 30 nm and that has microporous and crystallized walls with a thickness of between 1 and 60 nm, whereby said elementary spherical particles have a maximum diameter of 200 microns. Said catalyst is used in a process for oligomerization of an olefinic feedstock that contains hydrocarbon molecules that have 2 to 12 carbon atoms per molecule.

Abstract: The invention relates to a process for the production of middle distillates from a paraffinic feedstock that is produced by Fischer-Tropsch synthesis, implementing a hydrocracking/hydroisomerization catalyst that comprises at least one hydro-dehydrogenating metal that is selected from the group that is formed by the metals of group VIB and group VIII of the periodic table and a substrate that comprises at least one zeolite that has at least one series of channels of which the opening is defined by a ring with 12 oxygen atoms modified by a) a stage for introducing at least one alkaline cation that belongs to group IA or IIA of the periodic table, b) a stage for treatment of said zeolite in the presence of at least one molecular compound that contains at least one silicon atom, c) at least one stage for partial exchange of said alkaline cations by NH4+ cations such that the remaining content of alkaline cations in the modified zeolite at the end of stage c) is such that the alkaline cation/aluminum molar ratio

Abstract: A process for oligomerization of an olefinic feedstock that contains olefinic hydrocarbon molecules that have 2 to 10 carbon atoms per molecule is described, whereby said process comprises bringing said feedstock into contact with a catalyst that comprises at least one amorphous material with hierarchized and organized porosity and consists of at least two elementary spherical particles, each of said particles comprising a mesostructured silicon-oxide-based matrix that has a mesopore diameter of between 1.5 and 30 nm and that exhibits amorphous and microporous walls with a thickness of between 1 and 50 nm, whereby said elementary spherical particles have a maximum diameter of 200 microns.

Abstract: This invention describes a process for the production of middle distillates from a paraffinic feedstock that is produced by Fischer-Tropsch synthesis, implementing a hydrocracking/hydroisomerization catalyst that comprises at least one hydro-dehydrogenating metal that is selected from the group that is formed by the metals of group VIB and group VIII of the periodic table and a substrate that comprises at least one dealuminified Y zeolite that has an initial overall atomic ratio of silicon to aluminum of between 2.5 and 20, a starting extra-lattice aluminum atom fraction by weight that is greater than 10%, relative to the total mass of aluminum that is present in the zeolite, a starting mesopore volume that is measured by nitrogen porosimetry that is greater than 0.07 ml.g?1, and a starting crystalline parameter ao of the elementary mesh of between 24.38 ? and 24.

Abstract: The present invention describes a hydrocracking and/or hydrotreatment process using a catalyst comprising an active phase containing at least one hydrogenating/dehydrogenating component selected from the group VIB elements and the non-precious elements of group VIII of the periodic table, used alone or in a mixture, and a support comprising at least one dealuminated zeolite Y having an overall initial atomic ratio of silicon to aluminium between 2.5 and 20, an initial weight fraction of extra-lattice aluminium atoms greater than 10%, relative to the total weight of aluminium present in the zeolite, an initial mesopore volume measured by nitrogen porosimetry greater than 0.07 ml·g?1 and an initial crystal lattice parameter a0 between 24.38 ? and 24.30 ?, said zeolite being modified by a) a stage of basic treatment comprising mixing said dealuminated zeolite Y with a basic aqueous solution, and at least one stage c) of thermal treatment.

Abstract: This invention describes a process for treatment of feedstocks obtained from a renewable source implementing—in one hydroisomerization stage—a catalyst that comprises at least one hydro-dehydrogenating metal that is selected from the group that is formed by the metals of group VIB and group VIII of the periodic table and a substrate that comprises at least one dealuminified Y zeolite that has an initial overall atomic ratio of silicon to aluminum of between 2.5 and 20, a fraction by weight of an initial extra-network aluminum atom that is greater than 10%, relative to the total mass of aluminum that is present in the zeolite, an initial mesopore volume that is measured by nitrogen porosimetry that is greater than 0.07 ml·g?1, and an initial crystalline parameter ao of the unit cell mesh of between 24.38 ? and 24.

Abstract: The present invention describes a method for hydrocracking and/or hydrotreating hydrocarbon-containing feeds using a catalyst comprising at least one hydro-dehydrogenizing metal selected from the group made up of group VIB and non-noble group VIII metals of the periodic table and a support comprising at least one zeolite having at least pore openings containing 12 oxygen atoms, modified by a) at least a stage of introducing at least one alkaline cation belonging to groups IA or IIA of the periodic table, b) a stage of treating said zeolite in the presence of at least one molecular compound containing at least one silicon atom, c) at least one stage of partial exchange of said alkaline cations by NH4+ cations in such a way that the proportion of alkaline cations remaining in the modified zeolite at the end of stage c) is such that the alkaline cation/aluminium molar ratio ranges between 0.2:1 and 0.01:1, and d) at least one thermal treatment stage.

Abstract: This invention describes a process for treatment of feedstocks obtained from a renewable source implementing a catalyst that comprises at least one hydro-dehydrogenating metal that is selected from the group that is formed by the metals of group VIB and group VIII of the periodic table and a substrate that comprises at least one zeolite that has at least one series of channels whose opening is defined by a ring with 8 oxygen atoms modified by a) at least one stage for introducing at least one alkaline cation that belongs to group IA or IIA of the periodic table, b) a stage for treating said zeolite in the presence of at least one molecular compound that contains at least one silicon atom, c) at least one stage of partial exchange of said alkaline cations by NH4+ cations, and d) at least one heat treatment stage.

Abstract: A process for isomerizing a feed comprising at least one aromatic compound containing eight carbon atoms per molecule is carried out in the presence of a catalyst comprising at least one modified zeolite with structure type EUO, at least one binder and at least one metal from group VIII of the periodic table, said catalyst having been prepared using a process which comprises the following in succession: a) a step for treatment of a zeolite with structure type EUO in the presence of at least one molecular compound containing at least one silicon atom, during which said compound, with a diameter greater than the maximum pore opening diameter in said zeolite, is deposited in the gas phase on the outer surface of said zeolite; b) at least one heat treatment step; c) forming said zeolite with a binder; d) at least one step for introducing at least one metal from group VIII of the periodic table onto a support based on said modified and formed zeolite.

Abstract: A process for the preparation of a catalyst that contains at least one modified zeolite, whereby said zeolite—before being modified—has a maximum pore opening diameter that is less than or equal to 7 ?, and whereby said process comprises at least: a) One stage for introducing at least one metal that is selected from among the metals of groups VIB and VIII of the periodic table on a substrate that is based on at least one protonated zeolite, b) One stage for treating said zeolite in the presence of at least one molecular compound that contains at least one silicon atom, and said compound that has a diameter that is greater than the maximum opening diameter of the pores of said zeolite, c) At least one heat treatment stage, is described.

Abstract: The invention describes a porous composite material that comprises a porous substrate based on a refractory inorganic oxide in which said substrate has a zeolite crystal content that is less than 25% by mass, whereby said crystals are dispersed homogeneously in the pores of said substrate, and the distribution coefficient that is measured by Castaing microprobe is between 0.75 and 1.25, and in which the total pore volume of said substrate represents at least 40% of the initial total pore volume of the substrate, and the mean diameter of the pores represents at least 50% of the mean diameter of the pores of the initial substrate, its process for preparation and its use as catalyst in the hydrocarbon feedstock conversion reactions.

Abstract: This invention relates to a staged-zone reactor of the axial-flow type that makes it possible to implement strongly endothermic or exothermic reactions. The reactor comprises a constriction of the catalytic bed between an upper zone (3a) and a lower zone (3b), making it possible to house in the reactor a heat exchanger for the intermediate heating or cooling of the effluents. Process of chemical conversion using this reactor for exothermic or endothermic reactions in the gas and/or liquid phase, and in particular for the oligomerization reaction of C2 to C12 fractions for the purpose of producing a diesel fraction.

Abstract: A reaction device includes staged zones making it possible to implement strongly endothermic or exothermic reactions. The device reduces the differences in catalytic activity between these zones using an addition of fresh or regenerated catalyst at the inlet of each reaction zone and provides an integrated heat exchanger. A process of chemical conversion employs the device for gas-phase and/or liquid-phase exothermic or endothermic reactions, and in particular for the oligomerization reaction of C2 to C12 fractions for the purpose of producing a diesel fraction.

Abstract: This invention relates to a staged-zone reactor of the axial-flow type that makes it possible to implement strongly endothermic or exothermic reactions. The reactor comprises a constriction of the catalytic bed between an upper zone (3a) and a lower zone (3b), making it possible to house in the reactor a heat exchanger for the intermediate heating or cooling of the effluents. Process of chemical conversion using this reactor for exothermic or endothermic reactions in the gas and/or liquid phase, and in particular for the oligomerization reaction of C2 to C12 fractions for the purpose of producing a diesel fraction.