The present invention aims to provide techniques for preparing complexes of a hydrotalcite and a fiber. The complexes of a hydrotalcite and a fiber can be synthesized efficiently by synthesizing the hydrotalcite in an aqueous system in the presence of the fiber.

The present invention aims to provide techniques for preparing complexes of a hydrotalcite and a fiber. The complexes of a hydrotalcite and a fiber can be synthesized efficiently by synthesizing the hydrotalcite in an aqueous system in the presence of the fiber.

With respect to a plate-shaped hydrotalcite in which the average width of primary particles is increased, (1) the aspect ratio of secondary particles is increased by suppressing aggregation of primary particles by relatively reducing the average thickness thereof, and 2) the formation of a by-product that impairs the transparency of a resin is suppressed. Provided is a plate-shaped hydrotalcite represented by a formula (1) below:
(M.sup.2+).sub.1−x(M.sup.3+).sub.x(OH).sub.2(A.sup.n−).sub.x/n.Math.mH.sub.2O  (1) where M.sup.2+ indicates at least one divalent metal, M.sup.3+ indicates at least one trivalent metal, A.sup.n− indicates an n-valent anion, n indicates an integer of 1 to 6, and x and m are within respective ranges of 0.1≤x≤0.33 and 0≤m≤10, the formula (1) satisfying (A) to (D) below: (A) the average width of primary particles as measured using an SEM method is 1 μm or greater; (B) the average thickness of primary particles as measured using an SEM method is 80 nm or less; (C) the degree of monodispersity of width is 50% or greater; and (D) the degree of monodispersity of thickness is 50% or greater.

A system for producing particles of aluminum chlorohydrate includes a feed stream configured to have a liquid solution of aluminum chloride, a conveyor belt having a surface configured to hold the liquid solution, a first radiant heat source configured to heat the liquid solution on the surface in order to form solid aluminum chloride hexahydrate, a grinder configured to crush the solid aluminum chloride hexahydrate in order to reduce an overall particle size of the aluminum chloride hexahydrate, and a second radiant heat source configured to heat the aluminum chloride hexahydrate in order to decompose the aluminum chloride hexahydrate and produce the particles of aluminum chlorohydrate. Methods of producing particles of aluminum chlorohydrate are also disclosed.

Alumina is generally used as an inorganic filler, while spinel, which is known to be lower in thermal conductivity than alumina, is used in applications such as gems, fluorescence emitters, catalyst carriers, adsorbents, photocatalysts and heat-resistant insulating materials, but not expected to be used as a thermally conductive inorganic filler. Thus, an object of the invention is to provide spinel particles having excellent thermal conductive properties. The invention relates to a spinel particle including magnesium, aluminum and oxygen atoms and molybdenum and having a [111] plane crystallite diameter of 220 nm or more.

A water purification apparatus and a water purification method capable of effectively using a layered double hydroxide and easily being applied are described. A water purification apparatus for removing a polluted substance from polluted water includes a solid-liquid separator that separates the polluted water and a solid material from each other, and a polluted substance remover that removes, by a layered double hydroxide, the polluted substance contained in the polluted water separated by the solid-liquid separator.

There is provided a functional layer including a layered double hydroxide (LDH). The functional layer includes a first layer with a thickness of 0.10 μm or more, the first layer being composed of fine LDH particles having a diameter of less than 0.05 μm, and a second layer composed of large LDH particles having a mean particle diameter of 0.05 μm or more, the second layer being an outermost layer provided on the first layer.

There is provided a functional layer including a layered double hydroxide (LDH). The functional layer includes a first layer with a thickness of 0.10 μm or more, the first layer being composed of fine LDH particles having a diameter of less than 0.05 μm, and a second layer composed of large LDH particles having a mean particle diameter of 0.05 μm or more, the second layer being an outermost layer provided on the first layer.

A battery includes a positive electrode, a negative electrode, and an electrolyte. The positive electrode includes Li.sub.xAl.sub.2(OH).sub.7-y.zH.sub.2O where 0.9<x<1.1, −0.1<y<0.1, 0≤z<2.1.

A device including a near field transducer, the near field transducer including gold (Au), silver (Ag), copper (Cu), or aluminum (Al), and at least two other secondary atoms, the at least two other secondary atoms selected from: boron (B), bismuth (Bi), indium (In), sulfur (S), silicon (Si), tin (Sn), manganese (Mn), tellurium (Te), holmium (Ho), lutetium (Lu), praseodymium (Pr), scandium (Sc), uranium (U), barium (Ba), chlorine (Cl), cesium (Cs), dysprosium (Dy), europium (Eu), fluorine (F), germanium (Ge), hydrogen (H), iodine (I), rubidium (Rb), selenium (Se), terbium (Tb), nitrogen (N), oxygen (O), carbon (C), antimony (Sb), gadolinium (Gd), samarium (Sm), thallium (Tl), cadmium (Cd), neodymium (Nd), phosphorus (P), lead (Pb), hafnium (Hf), niobium (Nb), erbium (Er), zinc (Zn), magnesium (Mg), palladium (Pd), vanadium (V), zinc (Zn), chromium (Cr), iron (Fe), lithium (Li), nickel (Ni), platinum (Pt), sodium (Na), strontium (Sr), calcium (Ca), yttrium (Y), thorium (Th), beryllium (Be), thulium (Tm), erbium (Er), ytterbium (Yb), promethium (Pm), neodymium (Nd cobalt (Co), cerium (Ce), lanthanum (La), praseodymium (Pr), or combinations thereof.