Abstract: The present invention relates to a process for the manufacture of articles made of conglomerate material, more particularly in the form of slabs or blocks, starting from a mixture comprising an optionally expanded granulate of stone material or lithoid material, and a binder based on a resin obtained from acrylate vegetal oils. The present invention also relates to the articles thus obtained.

Abstract: The invention relates to electrocatalysts comprising a carbonitride (CN) shell featuring good electrical conductivity, coordinating suitable catalytically active sites. In a preferred aspect of the invention, the aforesaid carbonitride shell coordinates nanoparticles or aggregates of nanoparticles, on which the active sites of the electrocatalyst are located. In a preferred form of the invention, said carbonitride shell covers suitable cores with good electrical conductivity. Said electrocatalysts are obtained through a process involving the pyrolysis of suitable precursors; in one aspect of the invention, the preparation process requires certain further steps. In one preferred aspect, the steps comprise one or more of the following: chemical treatments; electrochemical treatments; further pyrolysis processes.

Abstract: The invention relates to electrocatalysts comprising a carbonitride (CN) shell featuring good electrical conductivity, coordinating suitable catalytically active sites. In a preferred aspect of the invention, the aforesaid carbonitride shell coordinates nanoparticles or aggregates of nanoparticles, on which the active sites of the electrocatalyst are located. In a preferred form of the invention, said carbonitride shell covers suitable cores with good electrical conductivity. Said electrocatalysts are obtained through a process involving the pyrolysis of suitable precursors; in one aspect of the invention, the preparation process requires certain further steps. In one preferred aspect, the steps comprise one or more of the following: chemical treatments; electrochemical treatments; further pyrolysis processes.

Abstract: The use of particles of at least one crystalline oxide, preferably metal oxide, having an average particle size of less than 500 nm and a fluorine content of between 0.5 and 30% by weight, preferably between 0.5 and 5%, even more preferably between 1.0 and 4%, for the preparation of solid-state electrolytes, is described. Also described is a solid-state electrolyte, containing particles of at least one crystalline oxide, preferably metal oxide, having an average particle size of less than 500 nm, preferably between 10 and 500 nm, even more preferably between 50 and 300 nm; a fluorine content as noted above; an alkali or alkaline-earth metal content of between 0.5 and 10% by weight, preferably between 0.5 and 5%, even more preferably between 1 and 4%. Furthermore an inorganic-organic hybrid electrolyte obtainable by means of reaction of the aforementioned solid-state electrolyte with ionic liquids is described.

Abstract: Hybrid membranes based on crystalline titanium dioxide containing fluorine atoms within the crystalline lattice comprising atoms of titanium and oxygen are described; these hybrid membranes are particularly suitable for the production of fuel cells and electrolysers. A process for producing the aforesaid hybrid membranes is also described.

Abstract: Hybrid membranes based on crystalline titanium dioxide containing fluorine atoms within the crystalline lattice comprising atoms of titanium and oxygen are described; these hybrid membranes are particularly suitable for the production of fuel cells and electrolysers. The titanium dioxide contained in them may be produced by a process comprising the following stages: (a) a titanium ore is reacted with a NH4HF2 aqueous solution of; (b) the aqueous dispersion so obtained is filtered with subsequent separation of a solid residue and an aqueous solution containing titanium salts; (c) the aqueous solution so obtained is subjected to hydrolysis, said hydrolysis comprising a first stage at pH 6.5-8.0 and a second stage at pH 9-11; the aqueous dispersion thus obtained is filtered and the solid residue is subjected to pyrohydrolysis at a maximum temperature of approximately 500° C., preferably approximately 450° C.

Abstract: Hybrid membranes based on crystalline titanium dioxide containing fluorine atoms within the crystalline lattice comprising atoms of titanium and oxygen are described; these hybrid membranes are particularly suitable for the production of fuel cells and electrolyzers. A process for producing the aforesaid hybrid membranes is also described.

Abstract: A crystalline titanium dioxide containing fluorine atoms within the crystal lattice comprising atoms of titanium and oxygen is described; this titanium dioxide is particularly suitable for the production of solid-state electrolytes, hybrid membranes for fuel cells or electrolysers. A process for producing the aforesaid titanium dioxide is also described.

Abstract: The use of particles of at least one crystalline oxide, preferably metal oxide, having an average particle size of less than 500 nm and a fluorine content of between 0.5 and 30% by weight, preferably between 0.5 and 5%, even more preferably between 1.0 and 4%, for the preparation of solid-state electrolytes, is described. Also described is a solid-state electrolyte, containing particles of at least one crystalline oxide, preferably metal oxide, having an average particle size of less than 500 nm, preferably between 10 and 500 nm, even more preferably between 50 and 300 nm; a fluorine content of between 0.5 and 30% by weight, preferably between 0.5 and 5%, even more preferably between 1 and 4%; an alkali or alkaline-earth metal content of between 0.5 and 10% by weight, preferably between 0.5 and 5%, even more preferably between 1 and 4%. Furthermore an inorganic-organic hybrid electrolyte obtainable by means of reaction of the aforementioned solid-state electrolyte with ionic liquids is described.

Abstract: Hybrid membranes based on crystalline titanium dioxide containing fluorine atoms within the crystalline lattice comprising atoms of titanium and oxygen are described; these hybrid membranes are particularly suitable for the production of fuel cells and electrolysers. The titanium dioxide contained in them may be produced by a process comprising the following stages: (a) a titanium ore is reacted with a NH4HF2 aqueous solution of; (b) the aqueous dispersion so obtained is filtered with subsequent separation of a solid residue and an aqueous solution containing titanium salts; (c) the aqueous solution so obtained is subjected to hydrolysis, said hydrolysis comprising a first stage at pH 6.5-8.0 and a second stage at pH 9-11; (d) the aqueous dispersion thus obtained is filtered and the solid residue is subjected to pyrohydrolysis at a maximum temperature of approximately 500° C., preferably approximately 450° C.

Abstract: A crystalline titanium dioxide containing fluorine atoms within the crystal lattice comprising atoms of titanium and oxygen is described; this titanium dioxide is particularly suitable for the production of solid-state electrolytes, hybrid membranes for fuel cells or electrolysers. The aforesaid titanium dioxide may be produced using a process comprising the following stages: (a) a titanium ore is reacted with a NH4HF2 aqueous solution; (b) the aqueous dispersion thus obtained is filtered with consequent separation of a solid residue and an aqueous solution containing titanium salts; (c) the aqueous solution thus obtained is subjected to hydrolysis, said hydrolysis comprising a first stage at pH 6.5-8.0 and a second stage at pH 9-11; (d) the aqueous dispersion thus obtained is filtered and the solid residue is subjected to pyrohydrolysis at a maximum temperature of approximately 500° C., preferably approximately 450° C.