Abstract: The present invention relates to a dry reforming catalyst in which an active material is impregnated on the surface of a metal oxide support and the active material is surrounded by a surfactant, a method of preparing the same, and a method of producing a synthetic gas using the catalyst. Since the surfactant on the surface of the active material prevents the active material from being sintered and the active material surface from being covered with carbon, the dry reforming catalyst exhibits high activity at high temperature for a long period of time without having to use a precious metal, and thus is useful for the production of a synthetic gas.

Abstract: A method for producing a sulfide solid electrolyte includes a firing step of firing a raw material containing Li2S in a hydrogen sulfide-containing atmosphere at a temperature of 300° C. or higher, Li2S having a purity of 50 to 90% by mass at the start of firing. The Li2S may contain impurities including at least one of LiOH, Li2O, LiHCO3, and Li2CO3. In the firing step, it is preferable that a concentration of a hydrogen sulfide in the hydrogen sulfide-containing atmosphere is 50 volume % or more. It is preferable that the raw material further contains P2S5 and LiX (X represents at least one type of elemental halogen), and the sulfide solid electrolyte has an argyrodite-type crystal structure.

Abstract: A method for fabricating nanodiamond particles in a nanodiamond fabrication reactor, which method entails: a) forming a composite of a plurality of diamond monolayers interspersed with a plurality of non-monolayer dihydrobenzvalene (DHB), one over the other, by reacting kinetically energized carbyne radicals with a supported layer of DHB, thus sealing off any subtended, unreacted DHB from further reaction with the kinetically energized carbyne radicals. b) subjecting the diamond monolayers to an anvil having a nanomachined strike face, with sufficient force to fracture the diamond monolayers, to thereby produce nanodiamond having a shape in the X-Y plane matching that of the nanomachined strike face and a Z-axis dimension (thickness) which is that of a diamond monolayer.

Abstract: Method and installation for calcining cement raw meal in a calciner whereby fuel and a calciner oxidant having an oxygen content of at least 30% vol are introduced into the calciner so as to generate either an oxidant-lean zone or a fuel-lean zone in the calciner located between the lowermost fuel inlet level and the lowermost oxidant inlet level of the calciner, between 50% and 100% by weight of the raw meal being supplied to the calciner upstream of and/or within the oxidant-lean, respectively the fuel-lean zone.

Abstract: A hydrated lime product which can be provided to an end user in dry form and which can be formed into a slurry which will comprise lime hydrate with sufficiently increased reactivity over that of traditional hydrated lime slurries to be competitive in reaction time with on-site produced slaked lime slurries.

Abstract: The present invention relates to a method of quickly preparing a large amount of octacalcium phosphate and octacalcium phosphate prepared thereby. A method of preparing octacalcium phosphate according to an embodiment of the present invention includes preparing a calcium phosphate solution, controlling an initial pH by controlling a pH of the calcium phosphate solution to a range from 5 to 6 using an acidic solution at a time point at which the pH of the calcium phosphate solution increases, heating the calcium phosphate solution to a temperature ranging from 60° C. to 90° C., and controlling a terminal pH by controlling the pH of the calcium phosphate solution to a range from 5 to 6 using a basic solution at a time point at which the pH of the heated calcium phosphate solution decreases.

Abstract: Systems, devices, and techniques for manufacturing a crystalline material (e.g., large crystal material) through the solid state conversion of a polycrystalline material are described. A device may be configured to concurrently heat a volume of ribbon, such as an alumina ribbon, using multiple heat sources. For example, a first heat source may heat a first volume of the ribbon and a second heat source may concurrently heat a second volume, for example, within the first volume, where the ribbon may comprise polycrystalline material. The concurrent heating may drive grain growth in the polycrystalline material in at least the second volume, which may convert the polycrystalline material to crystalline material having one or more grains that are larger than one or more grains of the polycrystalline material. The processed ribbon may include a large crystal material or a single crystal material.

Abstract: Process for preparing alumina gel in a single precipitation step consisting of dissolving an aluminium precursor, aluminium chloride, in water, at a temperature of 10° C. to 90° C. such that the pH of the solution is from 0.5 to 5, for a period of 2 to 60 minutes, then adjusting the pH to 7.5 to 9.5 by adding a basic precursor, sodium hydroxide, to the solution obtained to obtain a suspension, at a temperature of 5° C. to 35° C., and for 5 minutes to 5 hours, followed by a filtration step, said process not comprising any washing steps. Also, novel alumina gel having a high dispersibility index, in particular a dispersibility index of more than 80%, a crystallite dimension of 0.5 to 10 nm, a chlorine content of 0.001% to 2% by weight and a sodium content of 0.001% to 2% by weight, the percentages by weight being expressed with respect to the total weight of the alumina gel.

Abstract: Disclosed is a method for manufacturing a photocatalytic filter for air purification. The present manufacturing method comprises the steps of: oxidizing a titanium metal to obtain a nanostructured titanium dioxide (TiO2); adding the nanostructured titanium dioxide to an acidic fluorine-containing solution to allow a reaction to occur therebetween for a predetermined period of time; and, after treatment in the acidic fluorine-containing solution, performing heat treatment on the nanostructured titanium dioxide.

Abstract: A method of providing highly reactive hydrated lime and the resultant lime hydrate where an initial lime feed comprising calcium and impurities is first ground to a particle-size distribution with relatively course particles. Smaller particles are then removed from this ground lime and the smaller particles are hydrated and flash dried to form a hydrated lime, which is then milled to a significantly smaller particle size than that of the relatively course particles.

Abstract: The devices, systems and techniques disclosed in this patent document include photocatalytic filter devices and can be used to provide a method for manufacturing a photocatalytic filter with improved adhesion. In addition, the present disclosure of this patent document includes technology to provide a method for reactivating a photocatalytic filter. Using the disclosed techniques, even if a photocatalytic filter is contaminated, the contaminated photocatalytic filter is easily reactivated while maintaining improved adhesion.

Abstract: Methods are disclosed for producing a calcium phosphate salt comprising reacting fluorosilicic acid (FSA) with water and a calcium phosphate source to produce phosphoric acid, calcium fluoride, and silicon dioxide; removing residual solids; performing a first stage precipitation wherein the phosphoric acid generated previously is reacted with a calcium source and water to remove residual fluoride; and performing a second stage precipitation wherein the phosphoric acid generated previously is reacted with a calcium source and water to isolate the product calcium phosphate salt, having a low level of impurities.

Abstract: The present invention relates to the field of solid materials for the adsorption of lithium. In particular, the present invention relates to a new method for the preparation of a crystallized and shaped solid material, preferably in extruded form, of the formula (LiCl)x.2Al(OH)3,nH2O, wherein n is between 0.01 and 10, x is between 0.4 and 1, wherein it comprises a step a) of precipitation of boehmite under specific temperature and pH conditions, a step of bringing into contact the precipitate obtained with LiCl, at least one acid extrusion-kneading shaping step, wherein the method also comprises a final hydrothermal treatment step, all of which makes it possible to increase the lithium adsorption capacity, the adsorption kinetics, as well as the lithium/boron selectivity of the materials obtained with respect to the materials of the prior art, when it is used in a lithium extraction method of saline solutions.

Abstract: A precipitated silica characterised by the presence of specific acid sites on its surface and a process for its manufacture.

Abstract: Spherical silica and/or silicate particles having a d50 median particle size from 1 to 5 ?m, a d95 particle size less than 8 ?m, an oil absorption from 40 to 100 cc/100 g, a pack density from 20 to 60 lb/ft3, and a sphericity factor (S80) of at least 0.9, are disclosed, as well as methods for making these spherical particles, and dentifrice compositions containing the spherical particles.

Abstract: Doped cerium oxide particles may comprise about 90 weight percent (wt. %) to about 99.9 wt. % cerium oxide (CeO2) and up to about 10 wt. % dopant. Exemplary doped cerium oxide particles may have a BET specific surface area of more than 150 m2/g after calcination at 500° C. for 8 hours. Exemplary doped cerium oxide particles may have an oxygen storage capacity (OSC) of more than 900 ?mol·O2/g after calcination at 500° C. for 8 hours.

Abstract: Disclosed are methods for preparing high-purity boehmite and porous gamma-alumina nano-powder, comprising: adding aluminum isopropoxide into water and stirring the aluminum isopropoxide added water, then adding aluminum hydroxide generated by hydrolysis of high-purity aluminum powder into that stirred water, stirring that aluminum hydroxide added water to obtain a mixed system; carrying out hydrothermal reaction on the mixed system, performing centrifuging, washing, drying and crushing to the reacted mixed system, obtaining high-purity boehmite; calcining the high-purity boehmite to obtain porous gamma (?)-alumina nano-powder.

Abstract: A particulate TiO2 includes a TiO2 content of at least 99 wt.-%, an anatase content of at least 98 wt.-%, a primary crystallite size X50 of at least 200 nm, a numerical fraction of TiO2 with a primary crystallite size of at most 100 nm of at most 10%, a specific surface area of at most 8 m2/g as determined by BET measurements, 1200 ppm to 2400 ppm of alkali with respect to the TiO2 content, an Al content of 1 ppm to 1000 ppm, expressed as Al and with respect to the TiO2 content, a weight ratio of Al2O3 to Nb2O5 of from 0.17 to 0.74, and 0.1 wt.-% to 0.3 wt.-% of P, expressed as phosphorus and with respect to the TiO2 content.

Abstract: This disclosure relates to red mud compositions. This disclosure also relates to methods of making red mud compositions. This disclosure additionally relates to methods of using red mud compositions.

Abstract: An electromagnetic wave absorbing particle dispersoid is provided that includes at least electromagnetic wave absorbing particles and a thermoplastic resin, wherein the electromagnetic wave absorbing particles contain hexagonal tungsten bronze having oxygen deficiency, wherein the tungsten bronze is expressed by a general formula: MxWO3-y (where one or more elements M include at least one or more species selected from among K, Rb, and Cs, 0.15?x?0.33, and 0<y?0.46), and wherein oxygen vacancy concentration NV in the electromagnetic wave absorbing particles is greater than or equal to 4.3×1014 cm?3 and less than or equal to 8.0×1021 cm?3.