Abstract: The invention relates to a process for transformation of lignocellulosic biomass or cellulose using in a simultaneous manner an original combination of at least two homogeneous catalysts and one or more heterogeneous catalyst(s). The use of these catalysts makes it possible to obtain mono-oxidized or poly-oxidized upgradable products directly and to limit the formation of non-upgradable products. Non-upgradable products are defined as soluble and non-soluble humins, i.e., products of high molecular weight obtained from undesirable condensation reactions of sugars and their derivatives.

Abstract: The invention relates to a process for producing middle distillates from a paraffinic feedstock produced by Fischer-Tropsch synthesis, implementing a hydrocracking/hydroisomerization catalyst comprising at least one hydro-dehydrogenating metal selected from the group formed by the metals from group VIB and from group VIII of the periodic table and a substrate comprising at least one crystallized IZM-2 solid having a chemical composition, expressed on an anhydrous base, in terms of oxide moles, by the following general formula: XO2:aY2O3:bM2/nO, wherein X represents at least one tetravalent element, Y represents at least one trivalent element and M is at least one alkali metal and/or an alkaline earth metal of valency n, a and b representing respectively the number of moles of Y2O3 and M2/nO and a is between 0 and 0.5 and b is between 0 and 1.

Abstract: The invention relates to a process for transformation of lignocellulosic biomass or cellulose using in a simultaneous manner an original combination of at least two homogeneous catalysts and one or more heterogeneous catalyst(s). The use of these catalysts makes it possible to obtain mono-oxidized or poly-oxidized upgradable products directly and to limit the formation of non-upgradable products. Non-upgradable products are defined as soluble and non-soluble humins, i.e., products of high molecular weight obtained from undesirable condensation reactions of sugars and their derivatives.

Abstract: A process for isomerizing an aromatic cut containing at least one aromatic compound containing eight carbon atoms per molecule, which includes bringing the aromatic cut into contact with a catalyst containing a zeolite with structure type EUO, which catalyst has been prepared by obtaining a zeolite with structure type EUO having an overall Si/Al atomic ratio in the range 5 to 45, a sodium content in the range 500 to 5000 ppm by weight, with a Na/Al ratio in the range 5% to 20% by mole, and thereafter performing the following: i) preparing a support by shaping the zeolite with a matrix such that the zeolite content is in the range 8% to 15% by weight with respect to the support; ii) depositing at least one metal from group VIII of the periodic classification of the elements onto the support or onto the zeolite; wherein the catalyst contains a final sodium content of 75 to 600 ppm by weight.

Abstract: The invention describes a process for the production of middle distillate hydrocarbon bases from an ethanol feedstock that is produced from a renewable source that is obtained from biomass, whereby said process comprises a stage for purification of said feedstock, a stage for transformation of said purified feedstock into a light olefinic effluent that comprises at least 30% by weight of olefins that have between four to six carbon atoms relative to the total mass of the formed hydrocarbon compounds, whereby said stage works in the presence of a catalyst that comprises at least one zeolite that is selected from among the zeolites that have a structural type that appears in the following list: CHA, ERI, MTF, AEI, AEL, FER, EUO, MEL, MFS, TON, MTT and the zeolites ZBM-30, ZSM-48, IM-5 and IZM-2, taken by themselves or in a mixture, a stage for separation of the olefinic effluent that is obtained from stage b) in such a way as to eliminate at least a portion of the water that is formed during stage b) to produce

Abstract: The invention describes a process for the production of middle distillate hydrocarbon bases from an ethanol feedstock that is produced from a renewable source that is obtained from biomass, comprising a stage for purification of said feedstock, a stage for dehydration of said purified feedstock into an effluent that is for the most part ethylene and comprises water, at least one stage for separating water, a first stage for oligomerization of the effluent that is for the most part ethylene into at least one olefinic effluent that comprises at least 80% by weight of olefins that have four or more carbon atoms, in the presence of a homogeneous catalyst that comprises at least one bivalent nickel compound, whereby a second oligomerization stage produces middle distillate hydrocarbon bases in the presence of an amorphous or zeolitic catalyst that has at least pore openings that contain 10 or 12 oxygen atoms, producing middle distillate hydrocarbon bases, and a fractionation stage.

Abstract: The invention concerns a process for the transformation of lignocellulosic biomass or cellulose into mono- or poly-oxygenated compounds, in which the lignocellulosic biomass or the cellulose is brought into simultaneous contact with a catalytic system comprising a combination of one or more homogeneous catalysts and one or more heterogeneous catalysts, in the same reaction chamber, in the presence of at least one solvent, said solvent being water alone or as a mixture with at least one other solvent, in a reducing atmosphere, and at a temperature in the range 80° C. to 250° C. and at a pressure in the range 0.5 MPa to 20 MPa.

Abstract: The invention concerns a catalyst comprising at least one zeolite with structure type MTW, a matrix, at least one metal from group VIII of the periodic classification of the elements, said catalyst having a mesopore volume increased by at least 10% compared with its initial mesopore volume, which is generally in the range 0.55 to 0.75 mL/g, at the end of a treatment with steam at a partial pressure in the range 0.01 to 0.07 MPa and at a temperature in the range 300° C. to 400° C. for at least 0.5 hour. The invention concerns the process for the preparation of said catalyst as well as an isomerization process employing said catalyst.

Abstract: The invention relates to a process for conversion of a paraffinic feedstock that has a number of carbon atoms of between 9 and 25, whereby said paraffinic feedstock is produced starting from renewable resources, employing a catalyst that comprises at least one hydrogenating-dehydrogenating metal that is selected from the group that is formed by the metals of group VIB and group VIII of the periodic table, taken by themselves or in a mixture, and a substrate that comprises at least one IZM-2 zeolite and at least one binder, with said process being carried out at a temperature of between 150 and 500° C., at a pressure of between 0.1 MPa and 15 MPa, at an hourly volumetric flow rate of between 0.1 and 10 h?1, and in the presence of a total quantity of hydrogen mixed with the feedstock such that the hydrogen/feedstock ratio is between 70 and 2,000 Nm3/m3 of feedstock.

Abstract: The invention relates to a catalyst comprising at least one metal selected from the group formed by metals of group VIB and of group VIII of the periodic table, used alone or as a mixture, and a support comprising at least one zeolite NU-86, at least one zeolite Y and at least one porous mineral matrix containing at least aluminium and/or at least silicon. The invention also relates to a process for hydrocracking of hydrocarbon feeds employing said catalyst.

Abstract: A process for the production of middle distillates comprising at least one hydrocracking stage that oligomerizes a paraffinic feedstock produced by Fischer-Tropsch synthesis, the process using a catalyst that comprises at least one hydrogenating-dehydrogenating metal that is selected from the group that is formed by the metals of group VIB and group VIII of the periodic table, by themselves or in a mixture, and a substrate that comprises a beta zeolite in the form of crystallites with a mean size that is less than 100 nm dispersed in at least one porous mineral matrix, whereby the beta zeolite has a mesopore volume of less than 0.4 ml/g.

Abstract: A process for the hydrotreatment of a vacuum distillate type hydrocarbon feed containing nitrogen-containing compounds is described, comprising a first step in which the feed is brought into contact with a catalyst in its oxide form, then a second step in which the feed is brought into contact with a dried catalyst comprising at least one organic compound containing oxygen and/or nitrogen.

Abstract: A process for the hydrotreatment of a diesel type hydrocarbon feed containing nitrogen-containing compounds is described, comprising a first step in which the feed is brought into contact with a catalyst in its oxide form, then a second step in which the feed is brought into contact with a dried catalyst comprising at least one organic compound containing oxygen and/or nitrogen.

Abstract: The invention relates to a process for transformation of lignocellulosic biomass or cellulose using stable non-zeolitic heterogeneous catalysts that are based on tin and/or antimony, preferably dispersed on a substrate. The use of these catalysts makes it possible to obtain directly lactic acid with high selectivity while limiting the production of oligosaccharides and soluble polymers.

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 aluminum between 2.5 and 20, an initial weight fraction of extra-lattice aluminum atoms greater than 10%, relative to the total weight of aluminum 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: 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 process for isomerizing an aromatic cut containing at least one aromatic compound containing eight carbon atoms per molecule is described, comprising bringing said cut into contact with at least one catalyst comprising at least one metal from group VIII of the periodic classification of the elements, at least one zeolitic support comprising a zeolite selected from zeolites with structure type EUO and MOR, used alone or as a mixture, and at least one matrix, such that the specific surface area of the matrix in the zeolitic support of said catalyst is in the range 5 to 200 m2/g.

Abstract: The invention relates to a method of preparing a catalyst comprising a) preparation of a support comprising 0.2 to 30 wt % of zeolite NU-86 and from 70 to 99.8 wt % of a porous mineral matrix, the percentages by weight being expressed relative to the total weight of said support, b) impregnation of the support prepared according to step a) with at least one solution containing at least one precursor of at least one metal selected from group VIII metals and group VIB metals, used alone or as a mixture, c) at least one ripening step, and d) at least one drying step carried out at a temperature below 150° C., without a subsequent calcining step. The present invention also relates to a process for hydrocracking hydrocarbon feeds using the catalyst prepared according to the method of preparation according to the invention.

Abstract: The invention relates to a process for transformation of lignoceliulosic biomass or cellulose that uses tungsten-oxide-based heterogeneous catalysts that are dispersed on an oxide-based substrate, preferably with a base of oxide(s) of aluminum and/or zirconium and/or titanium and/or niobium and containing an element in the particular metallic state. The use of these catalysts makes it possible to obtain directly upgradable products containing three carbon atoms, in particular hydroxyacetone and propylene glycol with high selectivity.

Abstract: The invention relates to a process for transformation of lignocellulosic biomass or cellulose using heterogeneous catalysts that are based on tin oxide and/or antimony oxide, dispersed on a substrate and containing at least one element in the particular metal state. The use of these catalysts makes it possible to obtain directly upgradable products, in particular hydroxyacetone and propylene glycol with high selectivity.