A method and system for producing nano-active powder materials. The method can be used with a reactor system comprising stages in which input particles flow under gravity progressively through stages of the reactor. A powder injector first stage in which ground input precursor powder is injected into the reactor. An externally heated preheater stage may be in the reactor, in which the precursor powder is heated to a temperature of calcination reaction. An externally heated calciner stage in the reactor, in which primary precursor volatile constituents can be rapidly removed calcination reactions as a high purity gas stream to produce the desired nano-active product. A post-processing reactor stage in which there is a change of the gas stream composition to produce the desired hot powder product by virtue of the nano-activity of the first powder material. A powder ejector stage in which the hot powder product is ejected from the reactor.

A spray pyrolysis system and method are described for manufacture of mixed metal oxide compositions, e.g., mixed metal oxide catalyst compositions having utility for gas processing applications such as hydrogenation, dehydrogenation, reduction, and oxidation. Mixed metal oxide automotive exhaust catalyst compositions produced by such system and method achieve a substantial reduction in temperatures required for removal of automotive exhaust pollutant species, as compared to catalyst produced by conventional batch precipitation techniques. The spray pyrolysis system and method enable catalytic metal(s) to be integrally incorporated in the mixed metal oxide composition, thereby obviating a separate catalytic metal impregnation operation.

The present invention provides an electrocatalytic material and a method for making an electrocatalytic material. There is also provided an electrocatalytic material comprising amorphous metal or mixed metal oxides. There is also provided methods of forming an electrocatalyst, comprising an amorphous metal oxide film.

A method for preparing an ordered cross-stacked metal oxide nanowire array is provided. The method includes the following steps: conducting synthesis by using an amphiphilic diblock copolymer as a structure directing agent, tetrahydrofuran (THF) as a solvent and polyoxometalates (POMs) as an inorganic precursor, where the diblock copolymer can interact with POMs via an electrostatic force to form a core-shell cylindrical micelle in the solvent, which self-assembles to form an ordered multilayer-crossed organic-inorganic composite nanostructure during an evaporation process; the template is removed by calcination in air, thereby obtaining ordered and crossed metal oxide nanowires with various elements doping. The nanowire array material has a high specific surface area, a high crystallinity, and realizes uniform doping of heteroatoms.

The invention relates to a composite oxide comprising CaO stabilised by Ca.sub.3Al.sub.2O.sub.6 (C3A), wherein the composite is in the form of particles. The mixed oxide composite is useful as a catalyst in the transesterification of triglycerides, e.g. in the production of biodiesel. Calcium leaching is more hindered in CaO—Ca.sub.3Al.sub.2O.sub.6 (2Ca/Al) than in CaO—Al.sub.2O.sub.3.

A method and system for producing nano-active powder materials. The method can be used with a reactor system comprising stages in which input particles flow under gravity progressively through stages of the reactor. A powder injector first stage in which ground input precursor powder is injected into the reactor. An externally heated preheater stage may be in the reactor, in which the precursor powder is heated to a temperature of calcination reaction. An externally heated calciner stage in the reactor, in which primary precursor volatile constituents can be rapidly removed calcination reactions as a high purity gas stream to produce the desired nano-active product. A post-processing reactor stage in which there is a change of the gas stream composition to produce the desired hot powder product by virtue of the nano-activity of the first powder material. A powder ejector stage in which the hot powder product is ejected from the reactor.

A method and system for producing nano-active powder materials. The method can be used with a reactor system comprising stages in which input particles flow under gravity progressively through stages of the reactor. A powder injector first stage in which ground input precursor powder is injected into the reactor. An externally heated preheater stage may be in the reactor, in which the precursor powder is heated to a temperature of calcination reaction. An externally heated calciner stage in the reactor, in which primary precursor volatile constituents can be rapidly removed calcination reactions as a high purity gas stream to produce the desired nano-active product. A post-processing reactor stage in which there is a change of the gas stream composition to produce the desired hot powder product by virtue of the nano-activity of the first powder material. A powder ejector stage in which the hot powder product is ejected from the reactor.

A method for manufacturing mixed oxide powders including the steps (a) producing a raw material mixture, (b) bringing the raw material mixture into a hot gas flow for the thermal treatment in a reactor, (c) forming particles of the mixed oxide powder, and (d) bringing the particles of the mixed oxide powder which are obtained in the step (b) and (c) out of the reactor, wherein the raw material mixture is manufactured in the form of a solution or suspension of at least one salt and/or salt mixture of at least one compound of the elements lithium, nickel and/or manganese, as well as a mixed oxide powder which is manufactured according to this method.

A method for producing metal oxide nanocrystals, according to the embodiment of the present invention, includes: continuously flowing, into a continuous flow path, one or a plurality of nanocrystal precursor solutions each comprising one or more nanocrystal precursors dissolved in a non-polar solvent; directing a segmenting gas into the continuous flow path to create a segmented reaction flow; flowing the segmented reaction flow into a thermal processor; heating the segmented reaction flow in the thermal processor to create a product flow; and collecting metal oxide nanocrystals from the product flow.

A method for producing a metal oxide nanocrystals according to the embodiment of the present invention comprises continuously flowing a nanocrystal precursor solution comprising a nanocrystal precursor into a continuous flow path and heating the nanocrystal precursor solution in the continuous flow path to create nanocrystals, comprising: providing a nanocrystal precursor solution supply unit that is connected to the continuous flow path and comprises a first vessel and a second vessel; delivering a nanocrystal precursor solution in the second vessel to the continuous low path; and creating a nanocrystal precursor solution in the first vessel as a different batch from the nanocrystal precursor solution in the second vessel.