Abstract:
This invention concerns a procedure for preparing amorphous silica from calcium silicate and CO2, with formation and separation of precipitate CaCO3.
Abstract:
Methods to manufacture nanoscale particles comprising metals, alloys, intermetallics, ceramics are disclosed. The thermal energy is provided by plasma, internal energy, heat of reaction, microwave, electromagnetic, direct electric arc, pulsed electric arc and/or nuclear. The process is operated at some stage above 3000K and at high velocities. The invention can be utilized to prepare nanopowders for nanostructured products and devices such as ion conducting solid electrolytes for a wide range of applications, including sensors, oxygen pumps, fuel cells, batteries, electrosynthesis reactors and catalytic membranes.
Abstract:
A dispersion of alumina hydrate comprises an alumina hydrate containing 0.1 to 1.0% by weight of a nitrate anion and having an average pore radius of 20 to 200 Å and a half breadth of pore radius distribution of 20 to 150 Å and deionized water. Another dispersion of alumina hydrate comprises an alumina hydrate containing 0.1 to 1.0% by weight of a nitrate anion and having at least two peaks in pore radius distribution and deionized water. Another dispersion of alumina hydrate comprises a titanium dioxide-containing alumina hydrate containing 0.1 to 1.0% by weight of a nitrate anion and deionized water. In each of these dispersions, when the alumina hydrate is dispersed in water at a solids concentration of 15% by weight to form a dispersion, the viscosity of the dispersion is not higher than 75 cP as measured at 20° C. and the dispersion has a shear rate of 7.9 sec−1.
Abstract:
Nanostructured non-stoichiometric materials are disclosed. Novel photonic materials and their applications are discussed. More specifically, the specifications teach the use of nanotechnology and nanostructured materials for developing novel photonic and optical applications.
Abstract:
Novel inks and dopant materials and their applications are discussed. More specifically, the specifications teach the use of nanotechnology and nanostructured materials for developing novel ink and dopant-based products.
Abstract:
A process for preparing a target for use in production of a thin metal oxide film that comprises molding an amorphous powder of organic metal chelate complexes to obtain the target. The process also includes mixing metallic materials with an organic chelating agent so as to give a predetermined metal composition to prepare a transparent aqueous solution of organic metal chelate complexes. The process also includes spray-drying the aqueous solution to obtain an amorphous powder of the organic metal chelate complexes.
Abstract:
This invention relates to methods whereby nanoparticle liquid suspensions are used in conventional thermal spray deposition for the fabrication of high-quality nanostructured coatings. Ultrasound is used for disintegration of the as-synthesized particle agglomerates, nanoparticle dispersion in liquid media, and liquid precursor atomization.
Abstract:
Disclosed are amorphous precipitated silicas, silica gels, and amorphous carbons derived from biomass and methods of producing them with and without adhered or deposited amorphous carbons produced by acidifying a caustic silicate solution produced by caustic digestion of biomass ash containing silica with and without activated carbon, the ash being obtained from thermal pyrolysis of the biomass, the acidifying effective to produce a slurry of the precipitated silica and silica gels with and without adhered or deposited amorphous carbon, and separated from the slurry the precipitated silicas and silica gels with and without the adhered or deposited amorphous carbons. The properties of the precipitated silica with adhered or deposited carbon being within the range as utilized in rubber compositions thereby avoiding the blending of silica and carbon components for such use. The precipitated silicas and silica gels without adhered or deposited carbon having metal contaminants present in low concentrations which when used in formulation of chemical-mechanical-planerization slurries used in polishing silicon wafers in the manufacture of computer chips and other electronic devices do not contaminate the wafer and final chip product and the other electronic devices.
Abstract:
This invention relates to methods whereby nanoparticle liquid suspensions are used in conventional thermal spray deposition for the fabrication of high-quality nanostructured coatings. Ultrasound is used for disintegration of the as-synthesized particle agglomerates, nanoparticle dispersion in liquid media, and liquid precursor atomization.
Abstract:
Size-confined nanocomposite powders and methods for their manufacture are provided by coating fine powders with a nanoscale powder of a different composition. The nanocomposite plastics disclosed offer performance characteristics approaching those of metals and alloys. The nanocomposite powders are alternatively used for dispersion strengthening of metals, alloys, and ceramics. Novel materials based nanotechnology for energy devices and programmable drug delivery are disclosed.