Abstract: There are provided an adsorbent material excellent in the adsorptive removal properties of Cs and Sr also in seawater, and a method for producing a crystalline silicotitanate suitable for the adsorbent material. The adsorbent material according to the present invention comprises: at least one selected from crystalline silicotitanates represented by Na4Ti4Si3O16.nH2O, (NaxK(1-x))4Ti4Si3O16.nH2O and K4Ti4Si3O16.nH2O wherein x represents a number of more than 0 and less than 1 and n represents a number of 0 to 8; and at least one selected from titanate salts represented by Na4Ti9O20.mH2O, (NayK(1-y))4Ti9O20.mH2O and K4Ti9O20.mH2O wherein y represents a number of more than 0 and less than 1 and m represents a number of 0 to 10.

Abstract: A method for producing a nonatitanate of an alkali metal, the method having: a first step for reacting an alkali metal hydroxide with titanium tetrachloride and producing Ti(OH)4; a second step for mixing the resulting Ti(OH)4 and an alkali metal hydroxide; and a third step for heating the mixture obtained in the second step, the alkali metal hydroxide being used so that the A/Ti molar ratio (A represents an alkali metal element) falls within a range of 1.0-5.0 in the second step, wherein a nonatitanate of an alkali metal can be produced economically.

Abstract: The purpose of the present invention is to provide an industrially advantageous method for producing ?-lithium aluminate which has physical properties that are suitable for use as an electrolyte holding plate of a MCFC having excellent thermal stability, even if the ?-lithium aluminate is a fine material having a BET specific surface area of 10 m2/g or higher in particular. Provided is a method for producing ?-lithium aluminate characterized by subjecting a mixture (a), which is obtained by mixing transitional alumina and lithium carbonate at an Al/Li molar ratio of 0.95-1.01, to a first firing reaction so as to obtain a fired product, and subjecting a mixture (b), which is obtained by adding an aluminum compound to the obtained fired product at quantities whereby the molar ratio of aluminum atoms in the aluminum compound relative to lithium atoms in the fired product (Al/Li) is 0.001-0.05, to a second firing reaction.

Abstract: There is provided an adsorbent material having adsorptive removal properties of Cs and Sr in seawater, and a method for producing a crystalline silicotitanate suitable for the adsorbent material. The adsorbent material includes one selected from crystalline silicotitanates represented by Na4Ti4Si3O16.nH2O, (NaxK(1-x))4Ti4Si3O16.nH2O and K4Ti4Si3O16.nH2O wherein x represents a number of more than 0 and less than 1 and n represents a number of 0 to 8; and one selected from titanate salts represented by Na4Ti9O20.mH2O, (NayK(1-y))4Ti9O20.mH2O and K4Ti9O20.mH2O wherein y represents a number of more than 0 and less than 1 and m represents a number of 0 to 10. The adsorbent material is produced by a method for producing a crystalline silicotitanate in which a silicic acid source, a sodium compound and/or a potassium compound, titanium tetrachloride, and water are mixed to obtain a mixed gel, and the mixed gel is subjected to a hydrothermal reaction.

Abstract: A process for producing a lithium vanadium phosphate-carbon composite includes a first step that includes mixing a lithium source, a tetravalent or pentavalent vanadium compound, a phosphorus source, and a conductive carbon material source that produces carbon through pyrolysis, in an aqueous solvent to prepare a raw material mixture, a second step that includes heating the raw material mixture to effect a precipitation reaction to obtain a reaction mixture that includes a precipitate, a third step that includes subjecting the reaction mixture that includes the precipitate to wet grinding using a media mill to obtain a slurry that includes ground particles, a fourth step that includes spray-drying the slurry that includes the ground particles to obtain a reaction precursor, and a fifth step that includes calcining the reaction precursor at 600 to 1300° C. in an inert gas atmosphere or a reducing atmosphere.

Abstract: There is provided an adsorbent material having adsorptive removal properties of Cs and Sr in seawater, and a method for producing a crystalline silicotitanate suitable for the adsorbent material. The adsorbent material includes one selected from crystalline silicotitanates represented by Na4Ti4Si3O16.nH2O, (NaxK(1-x))4Ti4Si3O16.nH2O and K4Ti4Si3O16nH2O wherein x represents a number of more than 0 and less than 1 and n represents a number of 0 to 8; and one selected from titanate salts represented by Na4Ti9O20.mH2O, (NayK(1-y))4Ti9O20.mH2O and K4Ti9O20.mH2O wherein y represents a number of more than 0 and less than 1 and m represents a number of 0 to 10. The adsorbent material is produced by a method for producing a crystalline silicotitanate in which a silicic acid source, a sodium compound and/or a potassium compound, titanium tetrachloride, and water are mixed to obtain a mixed gel, and the mixed gel is subjected to a hydrothermal reaction.

Abstract: [Problem to be Solved] There can be provided a lithium secondary battery which, when used as a positive electrode active material for lithium secondary batteries, is particularly excellent in cycle characteristics and rate characteristics and low in direct current (DC) resistance and in which the swelling resulting from the generation of gas accompanying the reaction with a nonaqueous electrolyte solution is suppressed. There is also provided a positive electrode active material for lithium secondary batteries in which the positive electrode active material can be industrially advantageously produced. [Solution] The positive electrode active material for lithium secondary batteries according to the present invention includes a lithium-transition metal composite oxide containing from 0.20 to 2.

Abstract: Provided are a novel 1,2-bis(dialkylphosphino)-4,5-(methylenedioxy)benzene derivative that forms a metal complex having particularly high asymmetry induction capacity and catalytic activity on ?-dehydroamino acids, a method for manufacturing the same, a metal complex having this 1,2-bis(dialkylphosphino)-4,5-(methylenedioxy)benzene derivative as a ligand, and an asymmetric hydrogenation method using this metal complex. A 1,2-bis(dialkylphosphino)-4,5-(methylenedioxy)benzene derivative represented by general formula (1). (In the formula, R1 and R2 represent an alkyl group having 1-10 carbon atoms, and R1 and R2 have different numbers of carbon atoms.

Abstract: An industrially advantageous method for producing an optically active 1,2-bis(dialkylphosphino)benzene derivative of the present invention is provided. The method is characterized in that a phosphine-borane compound represented by the following general formula (1) is subjected to a deboronation reaction, followed by lithiation, then the reaction product is subjected to reaction with an alkyldihalogenophosphine represented by RaPX?2, and thereafter the reaction product is subjected to reaction with a Grignard reagent represented by RbMgX? to produce an optically active 1,2-bis(dialkylphosphino)benzene derivative (A). R1 and R2 respectively represent an alkyl group having 1 to 8 carbon atoms, and the number of carbon atoms is different between R1 and R2. Ra is either R1 or R2 and Rb is the other of R1 and R2. X, X?, and X? each represent a halogen atom.

Abstract: Provided is a beta-type zeolite which has a high catalytic activity and is not easily deactivated. The beta-type zeolite of the invention has a substantially octahedral shape, has a Si/Al ratio of 5 or more, and is a proton-type zeolite. The Si/Al ratio is preferably 40 or more. This beta-type zeolite is preferably obtained by transforming a raw material beta-type zeolite synthesized without using a structure directing agent into an ammonium-type zeolite through ion exchange, then, exposing the beta-type zeolite to water vapor, and subjecting the exposed beta-type zeolite to an acid treatment.

Abstract: When being blended in a toner, a barium titanate external additive for toner enhances, in particular, the toner fluidity, electrical properties, and other relevant performance; concurrently achieves high image density and reduced background fog in a printer using the toner; and further reduces image defects, such as void, fading, and the like. An industrially advantageous producing method of the barium titanate external additive for toner is also provided. The external additive for toner of the present invention includes spherical barium titanate having a specific gravity of 5.6 g/ml or less.

Abstract: A positive-electrode material includes lithium vanadium phosphate particles having an average primary particle diameter from 0.3 ?m to 2.6 ?m and crystallite sizes from 24 nm to 33 nm. The lithium vanadium phosphate particles are coated with a conductive carbon of a range of 0.5 mass % to 2.4 mass % with respect to a total lithium vanadium phosphate particles.

Abstract: Provided are a novel 1,2-bis(dialkylphosphino)-4,5-(methylenedioxy)benzene derivative that forms a metal complex having particularly high asymmetry induction capacity and catalytic activity on ?-dehydroamino acids, a method for manufacturing the same, a metal complex having this 1,2-bis(dialkylphosphino)-4,5-(methylenedioxy)benzene derivative as a ligand, and an asymmetric hydrogenation method using this metal complex. A 1,2-bis(dialkylphosphino)-4,5-(methylenedioxy)benzene derivative represented by general formula (1). (In the formula, R1 and R2 represent an alkyl group having 1-10 carbon atoms, and R1 and R2 have different numbers of carbon atoms.

Abstract: The invention provides a modified perovskite type composite oxide in which the particle surface of a perovskite type composite oxide is coated with a first component of at least one selected from TiO2 and SiO2 and a second component of at least one selected from a group consisting of Al, Zr, Nd, La, Ce, Pr, and Sm, wherein the coating is formed by hydrolyzing at least one selected from a hydrolyzable TiO2 precursor and a hydrolyzable SiO2 precursor as a source of the first component and a salt of at least one selected from a group consisting of Al, Zr, Nd, La, Ce, Pr, and Sm as a source of the second component, and then calcining them.

Abstract: To provide an Fe(II)-substituted beta type zeolite which has been ion-exchanged with Fe(II) ions and can effectively adsorb and remove nitrogen monoxide or hydrocarbon contained in gas to be cleaned, even if oxygen is present in the gas at a high concentration or the temperature of the gas is low. In the Fe(II)-substituted beta type zeolite, a ratio of SiO2/Al2O3 is preferably 10 to 18, a BET specific surface area is preferably 400 m2/g to 700 m2/g, a micropore specific surface area is preferably 290 m2/g to 500 m2/g, and a micropore volume is preferably 0.15 cm3/g to 0.25 cm3/g. The amount of Fe(II) supported is preferably 0.01% by mass to 6.5% by mass based on the Fe(II)-substituted beta type zeolite.

Abstract: Provided is a method for preparing high-purity elemental phosphorus capable of simultaneously reducing both arsenic and antimony from crude white phosphorus containing a great amount of arsenic and antimony as impurities. Provided is a method for preparing high-purity elemental phosphorus, the method including bringing liquid crude white phosphorus into contact with an iodic acid-containing compound selected from iodic acid and iodates in an aqueous solvent in the presence of a chelating agent, wherein the chelating agent is selected from polyvalent carboxylic acids, polyvalent carboxylates, phosphonic acid and phosphonates.

Abstract: A conductive powder improving various performances as compared to conventional conductive powders is described. The conductive power includes conductive particles, each of which have a metal or alloy film formed on the surface of a core particle. The conductive particle has thereon protrusions protruding from the surface of the film. Each protrusion includes a particle chain including particles of the metal or alloy linked in a row. It is preferred that the metal or alloy is nickel or a nickel alloy. It is also preferred that the ratio of the total area of the exposed portions of the film to the projection area of the conductive particle is 60% or less.

Abstract: Provided is a method for producing an MTW-type zeolite. The reaction mixture contains a silica source, an alumina source, an alkali source, and water is reacted with a seed crystal of a zeolite to produce an MTW-type zeolite. The reaction mixture has a composition, which makes a synthesized zeolite contain an MFI-type zeolite when the zeolite is synthesized solely from the reaction mixture, is used. As the seed crystal, a beta-type zeolite which has a ratio of SiO2/Al2O3 of 8 to 50 and does not contain a structure direction agent is used. The seed crystal is added to the reaction mixture, in a proportion of 0.1% by mass to 20% by mass based on a silica component in the reaction mixture. The reaction mixture to which the seed crystal has been added is heated at 100° C. to 200° C. in a sealed state.

Abstract: Provided is a modified perovskite type composite oxide in which the dielectric characteristics are equal to or better than those prior to modification, there is no substantial elution of coating components from the modifying coating components, and change in the specific surface areas over time and elution of the A-site metals are suppressed effectively, while the cracking traits are good. A modified perovskite type composite oxide in which the particle surface of a perovskite type composite oxide is coated with a first component of at least one selected from TiO2 and SiO2 and a second component of at least one selected from a group consisting of Al, Zr, Nd, La, Ce, Pr, and Sm, wherein the coating is formed by hydrolyzing at least one selected from a hydrolyzable TiO2 precursor and a hydrolyzable SiO2 precursor as a source of the first component and a salt of at least one selected from a group consisting of Al, Zr, Nd, La, Ce, Pr, and Sm as a source of the second component, and then calcining them.

Abstract: The chromium (III) carbonate of the present invention exhibits a light blue color in a solid state. This chromium (III) carbonate has an L* value of 50 to 70, an a* value of ?4 to ?2, and a b* value of ?10 to ?7, which are represented by the L*a*b* color system (JIS Z8729). This chromium (III) carbonate is preferably completely dissolved within 30 minutes when the chromium (III) carbonate is added, in an amount corresponding to a Cr content of 1 g, to 1 liter of an aqueous solution of hydrochloric acid having a pH of 0.2 at a temperature of 25° C. This chromium (III) carbonate is preferably obtained by contacting an aqueous solution of carbonate and an aqueous solution containing trivalent chromium at a pH of 6 to 12 under the condition of a reaction liquid temperature of 0° C. or more and less than 50° C. Also, preferably, after production of the chromium (III) carbonate, filtration is performed, and the chromium (III) carbonate is washed with water until the conductivity of the filtrate is 5 mS/cm or less.