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AssigneeIfp Energies Nouvelles
InventorsAlexandra Chaumonnot, Aurelie Coupe, Clement Sanchez, Cedric Boissiere, David Grosso
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An inorganic material that consists of at least two elementary spherical particles, each of said spherical particles comprising metal nanoparticles that are between 1 and 300 nm in size and a mesostructured matrix with an oxide base of at least one element X that is selected from the group that consists of aluminum, titanium, tungsten, zirconium, gallium, germanium, tin, antimony, lead, vanadium, iron, manganese, hafnium, niobium, tantalum, yttrium, cerium, gadolinium, europium and neodymium is described, whereby said matrix has a pore size of between 1.5 and 30 nm and has amorphous walls with a thickness of between 1 and 30 nm, said elementary spherical particles having a maximum diameter of 10 μm. Said material can also contain zeolitic nanocrystals that are trapped within said mesostructured matrix.
An inorganic material consisting of at least two elementary spherical particles, each of said spherical particles comprising metal nanoparticles that are between 1 and 300 nm in size, said metal nanoparticles comprising at least one transition metal oxide and/or at least one rare earth metal oxide in which said metal is Ti, Zr, Nb, Ta, Mo, W, Fe, Co, Cu, Y, La, Ni, Cr, Pd, Pt, Ce, Eu, Nd, Gd or mixtures thereof, said metal nanoparticles being trapped within a mesostructured matrix with an oxide base of at least one element X that is aluminum, titanium, tungsten, zirconium, gallium, germanium, tin, antimony, lead, vanadium, iron, manganese, hafnium, niobium, tantalum, yttrium, cerium, gadolinium, europium or neodymium, whereby said mesostructured matrix has a pore size of between 1.5 and 30 nm and has amorphous walls with a thickness of between 1 and 30 nm, said elementary spherical particles having a maximum diameter of 10 μm.
An inorganic material consisting of at least two elementary spherical particles, each of said spherical particles consisting of metal nanoparticles that are between 1 and 300 nm in size, said metal nanoparticles comprising at least one transition metal oxide and/or at least one rare earth metal oxide in which said metal is Ti, Zr, Nb, Ta, Mo, W, Fe, Co, Cu, Y, La, Ni, Cr, Pd, Pt, Ce, Eu, Nd, Gd or mixtures thereof, said metal nanoparticles being trapped within a mesostructured matrix with an oxide base of at least one element X that is aluminum, titanium, tungsten, zirconium, gallium, germanium, tin, antimony, lead, vanadium, iron, manganese, hafnium, niobium, tantalum, yttrium, cerium, gadolinium, europium or neodymium, whereby said mesostructured matrix has a pore size of between 1.5 and 30 nm and has amorphous walls with a thickness of between 1 and 30 nm, said elementary spherical particles having a maximum diameter of 10 μm, said inorganic material being prepared by a process comprising a) synthesizing metal particles of a maximum nanometric size that is equal to 300 nm so as to obtain a stable colloidal solution in which said nanoparticles are dispersed;
An inorganic material consisting of at least two elementary spherical particles, each of said spherical particles comprising metal nanoparticles that are between 1 and 300 nm in size, said metal nanoparticles comprising at least one polymetal oxide with crystallographic structure a spinel AB2O4, perovskite ABO3 or ilmenite ABO3, whereby A and/or B is at least one transition metal and/or rare earth metal, said metal nanoparticles being trapped within a mesostructured matrix with an oxide base of at least one element X that is aluminum, titanium, tungsten, zirconium, gallium, germanium, tin, antimony, lead, vanadium, iron, manganese, hafnium, niobium, tantalum, yttrium, cerium, gadolinium, europium or neodymium, whereby said mesostructured matrix has a pore size of between 1.5 and 30 nm and has amorphous walls with a thickness of between 1 and 30 nm, said elementary spherical particles having a maximum diameter of 10 μm.
An inorganic material consisting of at least two elementary spherical particles, each of said spherical particles comprising metal nanoparticles that are between 1 and 300 nm in size, at least one chalcongenide that is formed by a transition metal M and a chalcogen element C that is sulfur, selenium or tellurium said metal nanoparticles being trapped within a mesostructured matrix with an oxide base of at least one element X that is aluminum, titanium, tungsten, zirconium, gallium, germanium, tin, antimony, lead, vanadium, iron, manganese, hafnium, niobium, tantalum, yttrium, cerium, gadolinium, europium or neodymium, whereby said mesostructured matrix has a pore size of between 1.5 and 30 nm and has amorphous walls with a thickness of between 1 and 30 nm, said elementary spherical particles having a maximum diameter of 10 μm.
An inorganic material consisting of at least two elementary spherical particles, each of said spherical particles comprising metal nanoparticles that are between 1 and 300 nm in size, trapped within a mesostructured matrix with an oxide base of at least one element X that is aluminum, titanium, tungsten, zirconium, gallium, germanium, tin, antimony, lead, vanadium, iron, manganese, hafnium, niobium, tantalum, yttrium, cerium, gadolinium, europium or neodymium, whereby said mesostructured matrix has a pore size of between 1.5 and 30 nm and has amorphous walls with a thickness of between 1 and 30 nm, said elementary spherical particles having a maximum diameter of 10 μm and wherein each of the spherical particles comprise zeolitic nanocrystals.
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