Abstract: A method of preparing a composition of alcohol esters of linear monocarboxylic acids with 6 to 26 carbon atoms from a vegetable or animal oil, neutral or acid, virgin or recycled, with monoalcohols having 1 to 18 carbon atoms, in the presence of a catalyst of nitrogen-containing metallophosphate type.

Abstract: A new crystallized hybrid material with an organic-inorganic matrix, called IHM-2, containing an inorganic network of metal centers based on the element indium that are connected to one another by organic ligands that are formed by the entity 2-aminoterephthalate —O2C—C6H3—N2—CO2— is described. Said material has an X-ray diffraction diagram as given below.

Abstract: A device for emitting a laser beam comprises, in a housing, a laser-emitting component emitting a laser beam and mounted on a base, a heat-dissipating component, at least one collimating lens, and a lens mounting. The heat-dissipating component dissipates the heat produced by the laser of the laser-emitting component and secures the base of the laser-emitting component. The heat-dissipating component has a positioning mark and at least three holes for centering pins machined together with the positioning mark. The lens mounting secures the lens opposite the laser-emitting component and is positioned relative to the heat-dissipating component by at least three centering pins positioned in the holes of the heat-dissipating component.

Abstract: The method for catalytic conversion of alcohols according to the present invention using a zinc oxide catalyst comprises a thermal pretreatment stage in an inert and/or reducing atmosphere at a temperature of at least 100° C., prior to the reaction stage.

Abstract: The invention relates to a device (21) for welding a first thermoplastic membrane (12) to a second thermoplastic membrane (13), in which at least the first thermoplastic membrane (12) or the second thermoplastic membrane (13) is absorbent. The invention is characterised in that the welding device (21) comprises at least one die (1) including a plurality of laser diodes (2) for emitting a laser beam (F) forming direct, simultaneous and uniform illumination on the illumination surface (23) of the first thermoplastic membrane (12).

Abstract: A process is described for the preparation of a functionalized hybrid solid with an organic-inorganic matrix, crystallized, bearing at least one reactive group based on a triazole ring, from a hybrid solid with an organic-inorganic matrix, MOF—NH2, comprising: i/ introduction, in a polar solvent S1, of said crystallized hybrid solid MOF—NH2, of at least one organic compound Q containing a nitride function N3 and at least one intermediate reagent R containing a nitrite function NO2, ii/ reaction of said reaction mixture, iii/ introduction in the reaction mixture of at least one reagent A bearing an alkyne function or an activated cyanide function, at least one Cu-based catalyst C and at least one polar solvent S2, iv/ reaction of said reaction mixture, v/ filtration and then washing and vi/ drying of said crystallized functionalized hybrid solid.

Abstract: The invention describes a crystallized hybrid solid with an organic-inorganic matrix, of a three-dimensional structure, containing an inorganic network of aluminum-based metal centers that are connected to one another by organic ligands that consist of the entity —O2C—C6H3—N3—CO2—. Said solid is called MIL-53-Al—N3 and has an X-ray diffraction diagram as given below.

Abstract: The invention describes a crystallized hybrid solid with an organic-inorganic matrix, of a three-dimensional structure, containing an inorganic network of aluminum-based metal centers that are connected to one another by organic ligands that consist of the entity —O2C—C6H3—N3—CO2—. Said solid is called CAU-1-N3 and has an X-ray diffraction diagram as given below.

Abstract: The invention describes a crystallized hybrid solid with an organic-inorganic matrix, of three-dimensional structure, containing an inorganic network of zinc-based metal centers connected to one another by organic ligands constituted by the entities —O2C—C6H3—N3—CO2— and C6H12N2. Said solid is called DMOF-1-N3 and has an X-ray diffraction diagram as provided below.

Abstract: A new crystallized hybrid material with an organic-inorganic matrix, called IHM-2, containing an inorganic network of metal centers based on the element indium that are connected to one another by organic ligands that are formed by the entity 2-aminoterephthalate —O2C—C6H3—N2—CO2— is described. Said material has an X-ray diffraction diagram as given below.

Abstract: A catalyst is described which comprises at least one IZM-2 zeolite and at least one matrix, said zeolite having a chemical composition expressed as the anhydrous base in terms of moles of oxides by the following general formula: XO2: aY2O3: bMnO, in which X represents at least one tetravalent element, Y represents at least one trivalent element and M is at least one alkali metal and/or alkaline-earth metal, a and b respectively representing the number of moles of Y2O3 and MnO; and a is in the range 0.001 to 0.5, b is in the range 0 to 1 and n is in the range 1 to 2. Said catalyst is used in various processes for the transformation of hydrocarbon feeds.

Abstract: A method of preparing a composition of alcohol esters of linear monocarboxylic acids with 6 to 26 carbon atoms from a vegetable or animal oil, neutral or acid, virgin or recycled, with monoalcohols having 1 to 18 carbon atoms, in the presence of a catalyst of nitrogen-containing metallophosphate type.

Abstract: The method for catalytic conversion of alcohols according to the present invention using a zinc oxide catalyst comprises a thermal pretreatment stage in an inert and/or reducing atmosphere at a temperature of at least 100° C., prior to the reaction stage.

Abstract: A method of preparing a composition of alcohol esters of linear monocarboxylic acids with 6 to 26 carbon atoms from a vegetable or animal oil, neutral or acid, virgin or recycled, with monoalcohols having 1 to 18 carbon atoms, in the presence of a heterogeneous catalyst based on a hybrid solid with an organic-inorganic mixed matrix, allows to directly produce, in one or more stages, an ester that can be used as fuel and a pure glycerin.

Abstract: A method of manufacturing a composition of alcohol esters of linear monocarboxylic acids with 6 to 26 carbon atoms from a vegetable or animal oil, neutral or acid, virgin or recycled, with monoalcohols having 1 to 18 carbon atoms, in the presence of a phosphate type catalyst or of an organophosphorous compound of a metal selected from the group made up of zirconium, hafnium and titanium, allows to directly produce, in one or more stages, an ester that can be used as fuel and a pure glycerin.

Abstract: A method of manufacturing a composition of alcohol esters of linear monocarboxylic acids with 6 to 26 carbon atoms from a vegetable or animal oil, neutral or acid, virgin or recycled, with monoalcohols having 1 to 18 carbon atoms, in the presence of a phosphate type catalyst or of an organophosphorous compound of a metal selected from the group made up of zirconium, hafnium and titanium, allows to directly produce, in one or more stages, an ester that can be used as fuel and a pure glycerin.

Abstract: A catalyst composition for use in dimerizing, co-dimerizing or oligomerizing olefins comprises: at least one zero-valent nickel complex; at least one acid with formula H+X? in which X? represents an anion; and at least one ionic liquid with general formula Q+ A? in which A? is an anion identical to or different from X?. The composition can also comprise a nitrogen-containing ligand. It can be used in dimerizing, co-dimerizing, oligomerizing and in polymerizing olefins.

Abstract: A catalyst composition for use in dimerizing, co-dimerizing or oligomerizing olefins results from dissolving a nickel compound, optionally mixed or complexed with a ligand, in a medium resulting from mixing: at least one quaternary ammonium halide and/or at least one quaternary phosphonium halide; at least one aluminum halide; and at least one aluminoxane.

Abstract: A catalyst composition for use in dimerizing, co-dimerizing or oligomerizing olefins comprises:

Abstract: A catalyst composition for use in dimerizing, co-dimerizing or oligomerizing olefins results from dissolving a nickel compound, optionally mixed or complexed with a ligand, in a medium resulting from mixing: