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 coarse particles. Smaller particles are then removed from this ground lime and the smaller particles are hydrated, allowed to mature in a damp state, and flash dried to form a hydrated lime, which is then milled to a significantly smaller particle size than that of the relatively coarse particles.

Abstract: In the mining process, linear, branched, hyperbranched or dendrimeric polyols or mixtures thereof are employed as process stabilization aids for aqueous solutions and, or suspensions of metal salts. A specific application area of the polyols is the stabilization of bauxite liquor in the Bayer process of producing alumina from bauxite.

Abstract: The present invention relates to a method of purifying strong acids or strongly acidic media to remove di- and higher valent metal ions, which can be used within the context of the production of high-purity silica. The invention further relates to the use of special ion exchangers for carrying out the method according to the invention and the resultant high-purity silicas.

Abstract: Provided are particle size-controlled, chromium oxide particles or composite particles of iron oxide-chromium alloy and chromium oxide; a preparation method thereof; and use thereof, in which the chromium oxide particles or the composite particles of iron oxide-chromium alloy and chromium oxide having a desired particle size are prepared in a simpler and more efficient manner by using porous carbon material particles having a large pore volume as a sacrificial template. When the chromium oxide particles or the composite particles of iron oxide-chromium alloy and chromium oxide thus obtained are applied to gas-phase and liquid-phase catalytic reactions, they are advantageous in terms of diffusion of reactants due to particle uniformity, high-temperature stability may be obtained, and excellent reaction results may be obtained under severe reaction environment.

Abstract: A method for preparing a sorbent composition includes the steps of: applying, from a solution or a slurry, a layer of a copper compound on the surface of a support material, and drying the coated support material, wherein the thickness of the copper compound layer on the dried support is in the range 1-200 ?m. The precursor may be converted to a sorbent suitable for removing heavy metals from liquids or gases by applying one or more sulphur compounds to sulphide the copper compound and form CuS.

Abstract: A method to activate U3O8 for conversion of this uranium oxide to hydrated UO4 via reaction with hydrogen peroxide H2O2, wherein the following successive steps are performed: a) an aqueous suspension is prepared containing a powder of U3O8 and hydrogen peroxide; b) the aqueous suspension containing a powder of U3O8 and hydrogen peroxide is contacted with ozone, whereby an aqueous suspension is obtained of a powder of activated U3O8; c) optionally the powder of activated U3O8 is separated from the aqueous suspension. A method to convert U3O8 to hydrated UO4 of formula UO4, nH2O where n is 2 or 4, comprising at least one step at which hydrogen peroxide H2O2 is added to the aqueous suspension of a powder of activated U3O8 obtained at the end of step b) of the activation method or to an aqueous suspension prepared by placing in suspension in water the powder of activated U3O8 obtained at the end of step c) of the activation method.

Abstract: A zirconia nanoparticle material includes a zirconia nanoparticle and a carbonate coordinated on a surface of the zirconia nanoparticle. The carbonate is 1 to 10 parts by weight of the zirconia nanoparticle.

Abstract: A method for making an anode active material of a lithium ion battery is provided. In the method, a tetrabutyl titanate solution and a water solution of lithium hydroxide is provided. The tetrabutyl titanate solution is incrementally added into the water solution of lithium hydroxide to react with the water solution of lithium hydroxide in an alkaline environment to obtain a mixed precipitate. The mixed precipitate is calcined to synthesize a spinel type lithium titanate. The spine lithium titanate is used as the anode active material to improve an electrochemical performance of the lithium ion battery.

Abstract: A monolithic catalyst for simultaneous removal of NOx and carbon particles, especially from off-gases of carbon power plants contains the monolith is made from acid-proof austenitic steel. The catalyst is a two-phase one; moreover, it contains the phases NiFe2O4 and Fe2O3(Mh) with spinel structure, and these phases form microcrystallites, additionally containing Mn. The manner of production of the monolithic catalyst for simultaneous removal of NOx and carbon particles, especially from off-gases of carbon power plants depends on the monolith is subject to oxidation after which the resulting oxide layers are washed with the solution of nickel salts; later the monolith is baked in the oxidising atmosphere with the view to inserting nickel ions into the oxide layer; finally this obtained oxide layers are subject to reduction.

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 invention relates to a process for producing SiO2 granules by freezing and re-thawing an SiO2 suspension, wherein a separation of liquid and sediment composed of agglomerated SiO2 particles occurs in the course of thawing, the liquid removed is decanted and the residual moisture in the sediment is removed by a drying step with formation of the SiO2 granules. According to the invention, an auxiliary comprising alkali metal-free bases in the form of nitrogen hydrides is added to the suspension to set the pH greater than 7.

Abstract: A process for preparing a composition including synthetic mineral particles, in which a hydrogel which is a precursor of the synthetic mineral particles is prepared via a coprecipitation reaction between at least one compound including silicon, and at least one compound including at least one metal element, characterized in that the coprecipitation reaction takes place in the presence of at least one carboxylate salt of formula R2—COOM? in which: —M? denotes a metal chosen from the group made up of Na and K, and —R2 is chosen from H and alkyl groups including fewer than 5 carbon atoms. A composition including synthetic mineral particles which is obtained by such a process is also described.

Abstract: A method for producing a sulphided copper sorbent includes the steps of: (i) contacting a sorbent precursor material containing one or more sulphidable copper compounds, with a sulphiding gas stream including hydrogen sulphide to form a sulphided sulphur-containing sorbent material, and (ii) subjecting the sulphided sulphur-containing sorbent material to a heating step in which it is heated to a temperature above that used in the sulphiding step and ?110° C., under an inert gas selected from nitrogen, argon, helium, carbon dioxide, methane, and mixtures thereof, the inert gas optionally including hydrogen sulphide. The method provides sulphided copper sorbents that have reduced levels of elemental sulphur.

Abstract: The present invention relates to a photocatalytically active nanoparticulate material. A nanoparticle of the invention is a composite nanoparticle having two crystalline phases: hydrogen titanate and titania, which are uniformly mixed in the nanoparticle. The invention also relates to forming a nanoparticulate composite material by heating a basic titania sol under solvothermal conditions.

Abstract: An oxidation catalyst for treating an exhaust gas from a diesel engine and an exhaust system comprising the oxidation catalyst are described. The oxidation catalyst comprises: a first washcoat region for oxidizing carbon monoxide (CO) and hydrocarbons (HCs), wherein the first washcoat region comprises a first platinum group metal (PGM) and a first support material; a second washcoat region for oxidizing nitric oxide (NO), wherein the second washcoat region comprises platinum (Pt), manganese (Mn) and a second support material; and a substrate having an inlet end and an outlet end; wherein the second washcoat region is arranged to contact the exhaust gas at the outlet end of the substrate and after contact of the exhaust gas with the first washcoat region.

Abstract: The present invention belongs to the field of preparation technique of inorganic functional material and provides a method for preparing nanometer titanium dioxide which comprises the following steps: (1) dissolving ilmenite powder using hydrochloric acid to obtain a raw ore solution; (2) eliminating the iron element in the raw ore solution to obtain a final solution containing titanium ions; (3) heating the final solution for hydrolysis to obtain a hydrolyzed product containing titanium dioxide; and (4) calcining the obtained hydrolyzed product to obtain nanometer titanium dioxide. The present invention has the advantages that the raw materials can be easily obtained, the energy consumption is low, both rutile type titanium dioxide and anatase type titanium dioxide can be produced, and the product has high purity, small particle diameter, narrow particle diameter distribution and good dispersibility.

Abstract: This invention describes the encapsulation of and self-assembly of meso (nano) porous silica particles from inorganic an inexpensive silica precursor, sodium silicate. The particles have a well defined shape, high surface area, and high uniformity of the pore size, the properties that are typically found for high quality mesoporous material synthesized from organic silica precursors. The disclosure illustrates a synthesis of hard spheres, discoids, and a mixture comprising discoids, gyroids and fibers, termed as origami.

Abstract: A method to recycle TiB2 articles, and in particular, a method to recycle a TiB2 feedstock including TiB2 articles and Ti-ore and/or Ti-slag by chlorination.

Abstract: In some examples, a method for treating a reforming catalyst, the method comprising heating a catalyst metal used for reforming hydrocarbon in a reducing gas mixture environment. The reducing gas mixture comprises hydrogen and at least one sulfur-containing compound. The at least one sulfur-containing compound includes one or more of hydrogen sulfide, carbonyl sulfide, carbonyl disulfide and organic sulfur-containing compounds such as thiophenes, thiophanes, sulfides (RSH), disulfides (RS2R?), tri-sulfides (RS3R?) and mercaptans (RSR?).

Abstract: A method for producing a potassium titanate easily and inexpensively produces a potassium titanate that exhibits high thermal stability and has a significantly low fibrous potassium titanate content. The method for producing a potassium titanate includes calcining a raw material mixture by heating the raw material mixture to a maximum calcination temperature that exceeds 1000° C. while controlling the heating rate from 1000° C. to the maximum calcination temperature to 15° C./min or less to obtain a calcine, and cooling the calcine while controlling the cooling rate from the maximum calcination temperature to 500° C. to 100° C.