Abstract: A method for generating metal peroxides from metal-containing raw materials is provided. The raw material is initially treated with a lixiviant salt, generating a soluble metal salt and a lixiviant base. Subsequent application of a peroxide or a source of peroxide generates the metal peroxide and also regenerates the lixiviant salt. This regenerated lixiviant salt can be recycled for application to additional raw material. Both stepwise and continuous processes are described.

Abstract: The present invention relates to odor-inhibiting compositions comprising water-absorbing polymer particles and metal peroxides, and to the production thereof.

Abstract: Catalysts for the decomposition of N2O into nitrogen and oxygen in the gas phase, which comprises a porous support composed of polycrystalline or vitreous inorganic material, a cerium oxide functional layer applied thereto and a layer of oxidic cobalt-containing material applied thereto are described. The catalysts can be used, in particular, as secondary or tertiary catalysts in nitric acid plants.

Abstract: An improved and efficient method of producing a composition containing a metal peroxide capable of enhancing microbial degradation of contaminants in soil and groundwater. The method includes reacting a metal oxide or metal hydroxide with hydrogen peroxide in a solution of water containing a reaction moderator, intercalation agent, and a gelling agent.

Abstract: The invention provides a food decay odor controller which includes a mercaptan remover.

Abstract: The invention relates to a method for producing quick lime from lime stone in a continuous regenerative shaft kiln, characterized in that, starting with standard conditions of excessive combustion air for the operation of this kiln, it especially includes a step where the excessive combustion air is progressively reduced until a content greater than 1000 ppm (in volume) of carbon monoxide is reached in the connection flue between the tanks. An increase in the content of gaseous sulphur dioxide is then observed in the gas flue, with respect to a kiln operated in standard conditions.

Abstract: An object of the present invention is to provide a process to grind at least one mineral material in the presence of ceria (CeO2)-containing zirconium oxide grinding beads having a specific ceria content (of between 14 and 20% by weight relative to the total weight of said bead, preferably of between 15 and 18%, and most preferably of approximately 16%), and a specific average grain size (of less than 1 ?m, preferably of less than 0.5 ?m, and most preferably of less than 0.3 ?m), wherein such beads are more resistant to wear than conventional beads of the prior art. Another object of the present invention lies in the ground material in the form of an aqueous suspension and in the form of a dry product. Another object of the present invention lies in the uses of such products in any sector making use of mineral materials, and notably in the paper, paint and plastic industries.

Abstract: An object of the present invention is to provide a process to grind at least one mineral material in the presence of ceria (CeO2)-containing zirconium oxide grinding beads having a specific ceria content (of between 14 and 20% by weight relative to the total weight of said bead, preferably of between 15 and 18%, and most preferably of approximately 16%), and a specific average grain size (of less than 1 ?m, preferably of less than 0.5 ?m, and most preferably of less than 0.3 ?m), wherein such beads are more resistant to wear than conventional beads of the prior art. An other object of the present invention lies in the ground material in the form of an aqueous suspension and in the form of a dry product. An other object of the present invention lies in the uses of such products in any sector making use of mineral materials, and notably in the paper, paint and plastic industries.

Abstract: The present invention provides a redox-curing type composition that penetrates into a wet body, particularly into a tooth structure (dentin), is cured in an accelerated manner by the moisture contained in the wet body, thereby exhibits a higher bond strength than those of conventional redox-curing type compositions, and has satisfactory storage stability. The present invention is a redox-curing type composition including a polymerizable monomer (a) having an acidic group, a polymerizable monomer (b) having no acidic group, a powdery inorganic peroxide (c) with an average particle diameter of 0.01 to 50 ?m, an amine-based reducing agent (d), and a polymerization accelerator (e). The amine-based reducing agent (d) includes an aromatic amine (d?1) and an aliphatic amine (d?2), and a weight ratio (d?1):(d?2) therebetween is 5:1 to 1:50.

Abstract: An improved and efficient method of producing a composition containing a metal peroxide capable of enhancing microbial degradation of contaminants in soil and groundwater. The method includes reacting a metal oxide or metal hydroxide with hydrogen peroxide in a solution of water containing a reaction moderator, intercalation agent, and a gelling agent.

Abstract: A method for making a white synthetic carbide lime filler composition of calcium hydroxide and calcium carbonate, wherein the calcium carbonate is in the form of surface carbonation on the calcium hydroxide. The method can include calcining calcium carbonate, hydrating the calcined material under controlled conditions which maintain a low moisture content and fracture the hydrated material into small particles of calcium hydroxide, carbonating the small calcium hydroxide particles to create the surface carbonation of calcium carbonate, and classifying the carbonated synthetic carbide lime particles to separate off oversized particles. The method can use a combined classifying and carbonating process, and a modified classifying vessel can be provided to carry out the combined process.

Abstract: Acid-neutralizing agent contains substantial amount of calcium of an acid-neutralizing ability against various acid chemicals substance for humans, animals, agricultural produces, meat and poultry. And the method of producing the same are provided. An environmental friendly high speed and high press scraping treatment is applied to a calcium-containing substance represented by calcium carbonate-containing substances originating from shellfishes, to eliminate heavy metals and other contamination accumulated on the surface. A heating and baking treatment is applied separately to the different said shellfishes and calcium carbonate-containing minerals and charcoal of bamboo to the temperature and maintaining the temperature not less then the decompose point of each calcium component-containing substance, a sufficient time of heating and baking treatment from 3 hours up to 18 hours depend on materials treated.

Abstract: The present invention is related to a magnesium oxide particle aggregate with the requirement of a first inflection point diameter is more than 0.30×10?6 to 0.60×10?6 m, a particle void volume is 0.50×10?3 to 0.90×10?3 m3·kg?1, and a micropore volume is 0.04×10?3 to 0.11×10?3 m3·kg?1 in the cumulative intrusion volume curve of said particle by having controlled particle aggregation structure so that the solid phase-solid phase reaction between magnesium oxide and the SiO2 film on the surface can be appropriately controlled.

Abstract: An object of the present invention is to provide a magnesium oxide particle aggregate having a controlled particle aggregation structure so that the solid phase-solid phase reaction between magnesium oxide and the SiO2 film on the surface can be appropriately controlled. The object can be achieved by a magnesium oxide particle aggregate characterized in that a first inflection point diameter is 0.30×10−6 m or less, an interparticle void volume is 1.40×10−3 to 2.20×10−3 m3/kg and a particle void volume is 0.55×10−3 to 0.80×10−3 m3/kg in a cumulative intrusion volume curve of the particle aggregate.

Abstract: There is provided a superconducting device including a substrate, a first superconductor layer supported by the substrate and containing Ln, AE, M and O, and a second superconductor layer containing a material represented by a formula of (Yb1−yLn′y)AE′2M′3Oz, the first and second superconductor layers forming a junction, and atomic planes each including M and O in the first superconductor layer and atomic planes each including M′ and O in the second superconductor layer being discontinuous to each other in a position of the junction, wherein each of Ln and Ln′ represents at least one metal of Y and lanthanoids, each of AE and AE′ represents at least one of alkaline earth metals, each of M and M′ represents a metal which contains 80 atomic % or more of Cu, y represents a value between 0 and 0.9, and z represents a value between 6.0 and 8.0.

Abstract: Metal oxides particularly useful for the manufacture of catalytic membranes for gas-phase oxygen separation processes having the formula: AxA′x′A″2-(x+x′)ByFey′B″2-(y+y′)O5+z where: x and x′ are greater than 0; y and y′ are greater than 0; x+x′ is equal to 2; y+y′ is less than or equal to 2; z is a number that makes the metal oxide charge neutral; A is an element selected from the lanthanide elements; A′ is an element selected from Be, Mg, Ca, Sr, Ba and Ra; A″ is an element selected from the f block lanthanides, Be, Mg, Ca, Sr, Ba and Ra; B is an element selected from the group consisting of Al, Ga, In or mixtures thereof and B″ is Co or Mg, with the exception that when B″ is Mg, A′ and A″ are not Mg. The metal oxides are useful for preparation of dense membranes which may be formed from dense thin films of the mixed metal oxide on a porous metal oxide element.

Abstract: A high-melting-point conductive oxide includes a mixture of a powdered Sr compound and Ru compound and/or Ru metal. The mixture is sintered at a primary temperature of 900° C. to 1300° C. in an atmosphere containing oxygen to form a sintered body that is pulverized back to a powder. The powder is given a desired shape that is again sintered, this time at a secondary temperature of 1000° C. to 1500° C. higher than the primary temperature, again in an atmosphere containing oxygen. The high-melting point conductive oxide is used as a heating element for high-temperature use, an electrode material for high-temperature use, a material for high-temperature thermocouple use and a light-emitting material for high-temperature use.

Abstract: The method for producing a positive electrode active material for an alkaline storage battery is disclosed. The method includes a first oxidation treatment of a raw material powder comprising a nickel hydroxide solid solution and cobalt hydroxide to oxidize the cobalt hydroxide to a cobalt oxyhydroxide; and a second oxidation treatment of the powder obtained in the first oxidation treatment to oxidize the nickel hydroxide solid solution to a nickel oxyhydroxide solid solution.

Abstract: A homogeneous calcium/magnesium peroxide, its manufacture and use are described. The new calcium/magnesium peroxide is suitable in particular as an additive used as source of oxygen and acid buffer, e.g. in the application, processing, treatment and/or disposal of various biomaterials.

Abstract: The preparation of water-insoluble, bactericidal, peroxide-containing products, by reaction of magnesium acetate with hydrogen peroxide, and products obtained are disclosed. Processes for application and deposition of these reaction products on natural, synthetic and blend fibrous substrates are also disclosed. The modified fibrous substrates thus produced inhibit the growth and spread of odor- and disease-causing gram-positive and gram-negative bacteria and the antibacterial activity of the modified fibrous substrates is durable to repeated launderings.

Abstract: A heat treatment method heats an oxide optical crystal in an oxygen atmosphere containing ozone to improve the light absorption characteristics of the oxide optical crystal so that the light absorption of the oxide optical crystal with light in wavelength bands other than light in wavelength bands with which the oxide optical crystal exerts the intrinsic absorption is reduced to the least possible extent. Guided-optical-wave propagation devices and optical devices, such as optical isolators, optical recording media and second harmonic generators, employing the oxide optical crystal having these improved absorption characteristics, operate at a high efficiency.

Abstract: A finely powdery magnesium hydroxide especially suitable as a flame-retardant filler for plastic compounds, in which the particles are provided optionally with a thin coating of a surfactant. The grain size of the magnesium hydroxide, measured by laser diffraction, is below 10 .mu.m. The median value of the grain size is greater than 0.8 .mu.m, and the maximum of the median value of the grain size is 3 .mu.m. The contents of water-soluble ionic impurities, viz. Ca.sup.++, Na.sup.+, K.sup.+, SO.sub.4 --, Cl.sup.-, of the magnesium hydroxide are below the following limits (in parts by weight): Ca.sup.++ <1000 ppm, Na.sup.+ <20 ppm, K.sup.+ <20 ppm, SO.sub.4 --<1500 ppm, Cl.sup.- <1000 ppm. The contents of Mn, Cu and Ni are below the following limits (in parts by weight): MnO<100 ppm, NiO<100 ppm, CuO<10 ppm.

Abstract: Ultra-fine spherical particles of a metal oxide having an average particle diameter of 40 nm or smaller can be prepared by a method in which a vaporizable metal compound is vaporized and decomposed under heating to give ultra-fine particles of a metal oxide followed by immediate cooling down to a temperature at which coalescence of the fine particles are prevented from coalescence. The fine particles have characteristics such as an excellent power of ultraviolet scattering.

Abstract: Crystalline molecular sieves having a three-dimensional microporous framework structures of MgO.sub.2, AlO.sub.2, SiO.sub.2 and PO.sub.2 tetrahedral units are disclosed. These molecular sieves have an empirical chemical composition on an anhydrous basis expressed by the formula:mR:(Mg.sub.w Al.sub.x P.sub.y Si.sub.z)O.sub.2wherein "R" represents at least one organic templating agent present in the intracrystalline pore system; "m" represents the molar amount of "R" present per mole of (Mg.sub.w Al.sub.x P.sub.y Si.sub.z)O.sub.2 ; and "w", "x", "y" and "z" represent the mole fractions of magnesium, aluminum, phosphorus and silicon, respectively, present as tetrahedral oxides. Their use as adsorbents, catalysts, etc. is disclosed.

Abstract: Disclosed is a continuous process for the production of bivalent metal peroxides, comprising the steps of introducing into an intensive mixing apparatus a solid, anhydrous or hydrated oxide or hydroxide of a bivalent metal; simultaneously introducing into the intensive mixing apparatus a solution of hydrogen peroxide, whereby the solid bivalent metal compound and the peroxide are intensively mixed and react to produce a reaction mixture containing bivalent metal peroxide; transporting the reaction mixture directly to a rapid dryer; and rapidly drying the reaction mixture to produce the bivalent metal peroxide in solid form.

Abstract: Alkali metal or alkaline earth metal peroxides, for example, particularly, calcium peroxide, are produced by recovering a moist peroxide product from an aqueous mixture, formed by reacting hydrogen peroxide and a hydroxide or oxide of the alkali metal or alkaline earth metal, and drying the moist product by means of a pneumatic conveyer drier. The peroxide so produced is suitable for granulation. Alternatively, particulate substances, such as seed, are coated with the peroxide by blending with the moist peroxide product and passing the blend through the pneumatic conveyer drier.

Abstract: A particulate alkali metal perborate having an outer layer of chemically bound calcium in an amount of from about 0.4 to 2.0% by weight of the total particle, to slow down the rate of dissolution. A process for preparing said slow-dissolving perborate.The slow-dissolving perborate is especially designed for mixing with detergent granules and has improved resistance against catalase attack under practical use conditions.

Abstract: The present invention relates to a process for preparing high purity inorganic higher oxides of the alkali and alkaline earth metals by subjecting the hydroxide of the alkali or alkaline earth metal to a radio frequency discharge sustained in oxygen. The invention is particularly adaptable to the production of high purity potassium superoxide (KO.sub.2) by subjecting potassium hydroxide to glow discharge sustained in oxygen under the pressure of about 0.75 to 1.00 torr.

Abstract: A process of manufacturing an oxide material for use in an oxygen generator. A quantity of dry zirconia particles is blended with Barium Peroxide particles and thereafter heated in a nitrogen atmosphere until the Barium Peroxide melts and coats the zirconia particles. The Barium Peroxide coating is subsequently decomposed to Barium Oxide. The Barium Oxide coated zirconia particles are allowed to cool and then passed through a grinder to produce a uniform particle size for oxide material.