Abstract: Disclosed is a novel solid catalyst having high catalytic activity, a method for producing the solid catalyst, and a catalytic reaction using the solid catalyst. A disclosed surface-modified halloysite is a halloysite having a carboxy group-containing group or a sulfo group-containing group on the surface thereof.

Abstract: Provided is a composite body that includes halloysite powder including a granule in which halloysite including a halloysite nanotube is aggregated, and a transition metal catalyst carried in the halloysite powder. The granule preferably includes a first pore derived from a tube hole of the halloysite nanotube, and a second pore different from the first pore. The transition metal catalyst preferably includes at least one element selected from the group consisting of iron, ruthenium, cobalt, nickel and silver.

Abstract: Provided is halloysite powder including a granule in which halloysite including halloysite nanotubes and titanium oxide are aggregated. The granule includes a first pore derived from a tube hole of the halloysite nanotubes, and a second pore different from the first pore.

Abstract: Provided is halloysite powder having a small b value. The halloysite powder is powder including a granule in which halloysite including halloysite nanotubes is aggregated, the granule has a first pore deriving from a tube hole of the halloysite nanotubes and a second pore different from the first pore, and the Fe2O3 content is not more than 2.00 mass %.

Abstract: Provided are a halloysite powder and a method for producing the halloysite powder. The halloysite powder contains granules in which halloysite including halloysite nanotubes is aggregated. The granules have first pores derived from the tube holes in the halloysite nanotubes and second pores that are different from the first pores.

Abstract: Provided are a novel metahalloysite powder and a production method thereof, which are not present in the prior art. The metahalloysite powder is a powder which comprises granules of aggregated metahalloysite comprising metahalloysite nanotubes, which are tube-shaped metahalloysite. The production method comprises a step of preparing a halloysite slurry which comprises halloysite nanotubes, a step for formulating a powder from the slurry, and a step for firing the formulated powder at a firing temperature of 500° C. or above.

Abstract: The present invention provides a novel material using a meta-halloysite that does not exist prior art, and a production method therefor. The meta-halloysite powder of the present invention is characterized in that: the meta-halloysite is covered by elemental carbon; the meta-halloysite contains elemental carbon; the meta-halloysite powder is a powder containing granules formed by the aggregation of meta-halloysite comprising meta-halloysite nanotubes covered by elemental carbon; or the meta-halloysite powder is powder containing granules formed by the aggregation of meta-halloysite comprising meta-halloysite nanotubes, which are tubular meta-halloysite, wherein the meta-halloysite contains elemental carbon.

Abstract: Provided are a halloysite powder having a novel granular structure not available in the prior art and a method for producing the halloysite powder. The halloysite powder contains granules in which halloysite including halloysite nanotubes is aggregated. The granules have first pores derived from the tube holes in the halloysite nanotubes and second pores that are different from the first pores.

Abstract: Disclosed is a novel solid catalyst having high catalytic activity, a method for producing the solid catalyst, and a catalytic reaction using the solid catalyst. A disclosed surface-modified halloysite is a halloysite having a carboxy group-containing group or a sulfo group-containing group on the surface thereof.

Abstract: A positive electrode material for a lithium secondary battery, which is high in safety, high in capacity, excellent in cycle performance, and high in charge/discharge efficiency, is provided. The positive electrode material for a lithium secondary battery is a powder containing a Li—Ni—Co—O or Li—Ni—Co—Ba—O system component as a main component and having an amorphous phase of an oxide mixed in each of particles or formed at the surface of the particle.

Abstract: A positive electrode material for a lithium secondary battery which is high in safety, high in capacity, excellent in rate performance and high temperature storage performance and high in charge/discharge efficiency is provided. The positive electrode material for a lithium secondary battery is obtained by adding Al to a Li—Ni—Co—Ba—O system raw material or preferably by adding Al and an amorphous phase of an oxide thereto. The positive electrode material for a lithium secondary battery is a composite oxide having a total composition represented by LiaNibCocBadAleOx or LiaNibCocBadAleMfOx where M: one or more elements selected from the group consisting of Li, Na, K, Si, Ba, B, P and Al a: 1.0 to 1.2 mol b: 0.5 to 0.95 mol c: 0.05 to 0.5 mol d: 0.0005 to 0.01 mol e: 0.01 to 0.1 mol f: 0.01 mol or less (not inclusive of 0).

Abstract: A cathode material for use in a lithium secondary battery of excellent thermal stability contributing to the improvement of safety of the battery and having large discharging capacity, as well as a method of manufacturing the cathode material for use in the lithium secondary battery, based on the improved method for measuring the thermal stability of the cathode material, the cathode material comprising a compound represented by the chemical formula: LixNiyCozMmO2 in which the material is powdery and the BET specific surface area is 0.8 m2/g or less, M in the chemical formula represents one or more of element selected from Ba, Sr and B, and x, y, z and m are, respectively, 0.9?x?1.1, 0.5?y?0.95, 0.05?z?0.5 and 0.0005?m?0.02.

Abstract: A positive electrode material for a lithium secondary battery, which is high in safety, high in capacity, excellent in cycle performance, and high in charge/discharge efficiency, is provided. The positive electrode material for a lithium secondary battery is a powder containing a Li—Ni—Co—O or Li—Ni—Co—Ba—O system component as a main component and having an amorphous phase of an oxide mixed in each of particles or formed at the surface of the particle.

Abstract: A positive electrode material for a lithium secondary battery which is high in safety, high in capacity, excellent in rate performance and high temperature storage performance and high in charge/discharge efficiency is provided. The positive electrode material for a lithium secondary battery is obtained by adding Al to a Li—Ni—Co—Ba—O system raw material or preferably by adding Al and an amorphous phase of an oxide thereto.

Abstract: Potassium titanate powder with no risk of carcinogenic property, comprising particles with a length of less than 2 &mgr;m, a length/breadth ratio of less than 5 and, further, comprising 90% or more of particles with the ratio less than 2 and 97% or more of particles with the ratio of less than 3, based on the ratio of the number of particles.

Abstract: A cathode material for use in a lithium secondary battery of excellent thermal stability contributing to the improvement of safety of the battery and having large discharging capacity, as well as a method of manufacturing the cathode material for use in the lithium secondary battery, based on the improved method for measuring the thermal stability of the cathode material, the cathode material comprising a compound represented by the chemical formula: LixNiyCozMmO2 in which the material is powdery and the BET specific surface area is 0.8 m2/g or less, M in the chemical formula represents one or more of element selected from Ba, Sr and B, and x, y, z and m are, respectively, 0.9≦x≦1.1, 0.5≦y≦0.95, 0.05≦z≦0.5 and 0.0005≦m≦0.02.

Abstract: Potassium titanate fine particles wherein the length is shorter than 5 &mgr;m, the content of the particles having the ratio of the length to the breadth is less than 3 is from 70 to 100% by number ratio, the diffraction intensity in the X-ray diffraction is low and the particles are low crystallinity, and the specific surface area thereof is from 20 to 50 m2/g.

Abstract: The potassium titanate of the present invention comprises particles of a diameter of 3 &mgr;m or less and a length of 5 &mgr;m or more with a ratio of the length to the diameter of 3:1 or more, at a content in number of 3% or less, with no hazardous particles contained therein from the respect of health and hygiene. The potassium titanate can be produced by heating a Ti source and a K source as the raw materials to a final TiO2:K2O ratio of 5.5:1 to 6.5:1 at a temperature elevation rate of 20° C./min in the temperature region above 800° C.

Abstract: The potassium titanate of the present invention comprises particles of a diameter of 3 .mu.m or less and a length of 5 .mu.m or more with a ratio of the length to the diameter of 3:1 or more, at a content in number of 3% or less, with no hazardous particles contained therein from the respect of health and hygiene. The potassium titanate can be produced by heating a Ti source and a K source as the raw materials to a final TiO.sub.2 :K.sub.2 O ratio of 5.5:1 to 6.5:1 at a temperature elevation rate of 20.degree. C./min in the temperature region above 800.degree. C.

Abstract: Whiskers having a diameter of 0.1-10 .mu.m and a length of 5-200 .mu.m are pelletized and granulated into agglomerates which have a size of 0.1-10 mm and a bulk density of 0.2-1.0 kg/liter.To pelletize, powders of whiskers are moistened with water while mixing to form primary aggregates. Then, the powders and the primary aggregates are subjected to a rolling movement to cause the primary aggregates to grow into secondary aggregates having desired size distribution. Finally, the secondary aggregates are dried to obtain pelletized or granulated agglomerates of whiskers.Handling of whiskers is facilitated because the agglomerates are less bulky and less likely to fly up in the air. When blended into molding materials for fiber reinforcement, however, the agglomerates are readily disintegrated back into separated individual fibers to provide homogeneous dispersion.