The present disclosure provides a method for manufacturing an aerogel blanket, wherein a surface modification process is performed under acid conditions while using a non-toxic catalyst. Under such a process, a solvent substitution process or a washing process may be omitted to simplify the manufacturing process. Further, collapse of a gel structure due to shrinkage is prevented and the efficiency of surface modification is high even when atmospheric pressure drying is performed, so that an aerogel having excellent thermal conductivity and degree of hydrophobicity may be manufactured. Also provided is an aerogel blanket manufactured by the method, thereby having low thermal conductivity and a low moisture impregnation rate since a hydrophobic group is uniformly formed inside a substrate.

According to the invention there is provided an electrothermic composition comprising: a carbon component; a graphite component having a crystallinity of 99.9% and wherein the graphite is heat treated at a temperature of 2500° C. to 3000° C., and a binder, whereby the composition has a thermal coefficient of electrical resistance (TCR) of ±0.0001 to 0.0010 per ° C. over a temperature range of from about 20° C. to 60° C. in an airborne environment, wherein the ratio of the first conductive component and the second resistor component is selected between 10:1 to 1:10.

Provided is anisotropic graphite for producing an anisotropic graphite composite having excellent thermal conduction property and excellent long-term reliability as a heat dissipating member. Given an X axis, a Y axis orthogonal to the X axis, and a Z axis perpendicular to a plane defined by the X axis and the Y axis, and a crystal orientation plane of the anisotropic graphite is parallel to an X-Z plane, and a specific number of holes each having a specific size are formed in at least one surface out of surfaces of the anisotropic graphite which are parallel to an X-Y plane.

A precipitated silica suitable for thermal insulation applications and a process for its manufacture.

A CaTiO.sub.3-based oxide thermoelectric material and a preparation method thereof are disclosed. The CaTiO.sub.3-based oxide thermoelectric material has a chemical formula of Ca.sub.1-xLa.sub.xTiO.sub.3, where 0<x≤0.4. The present disclosure makes it possible to prepare a CaTiO.sub.3-based thermoelectric material with properties comparable to n-type ZnO, CaTiO.sub.3, SrTiO.sub.3 and other oxide thermoelectric materials. Among them, the La15 sample has a power factor reaching up to 8.2 μWcm.sup.−1K.sup.−2 (at about 1000 K), and a power factor reaching up to 9.2 μWcm.sup.−1K.sup.−2 at room temperature (about 300 K); and a conductivity reaching up to 2015 Scm.sup.−1 (at 300 K). The CaTiO.sub.3-based oxide thermoelectric material exhibits the best thermoelectric performance among calcium titanate ceramics. The method for preparing the CaTiO.sub.3-based oxide thermoelectric material of the present disclosure is simple in process, convenient in operation, low in cost, and makes it possible to prepare a CaTiO.sub.3-based ceramic sheet with high thermoelectric performance.

One variation of a diamond composition includes carbon: including a first amount of carbon-13 isotopes and a second amount of carbon-12 isotopes; and sourced from a hydrocarbon mixture including hydrocarbons and formed via methanation of a carbon dioxide mixture. The carbon dioxide mixture: sourced from a sample of air including carbon dioxide and impurities; conveyed through a separation unit configured to remove impurities; including carbon dioxide and impurities; conveyed through a distillation column configured to regulate amounts of carbon-13 isotopes and carbon-12 isotopes; and exhibiting a target ratio of carbon-13 isotopes to carbon-12 isotopes at an outlet of the distillation column. The diamond composition: formed via chemical vapor deposition; and exhibiting an isotopic signature defining a final ratio of the first amount of carbon-13 isotopes to the second amount of carbon-12 isotopes within a first target range corresponding to the target ratio exhibited by the carbon dioxide mixture.

The invention relates to a method for preparing a material based on an aluminosilicate selected from barium aluminosilicate BAS, barium-strontium aluminosilicate BSAS, and strontium aluminosilicate SAS, said aluminosilicate consisting of aluminosilicate with a hexagonal structure, characterised in that it includes a single sintering step in which a mixture of powders of precursors of said aluminosilicate, including an aluminium hydroxide Al(OH).sub.3 powder, are sintered by a hot-sintering technique with a pulsed electric field SPS; whereby a material based on an aluminosilicate, said aluminosilicate consisting of an aluminosilicate with a hexagonal structure is obtained. The material based on an aluminosilicate prepared by said method can be used in a method for preparing a composite material consisting of an aluminosilicate matrix reinforced by reinforcements made of metalloid or metal oxide.

An oxide superconducting bulk magnet able to prevent breakage of a superconducting bulk member and able to give a sufficient amount of total magnetic flux at a superconducting bulk member surface even under high magnetic field strength conditions, comprising an oxide superconducting bulk laminate formed from sheet-shaped oxide superconducting bulk members and high strength reinforcing members arranged between the stacked oxide superconducting bulk members, the outer circumference of the oxide superconducting bulk laminate being provided with an outer circumference reinforcing member.

A method for transforming a crystal form of an electrolyte containing lithium for aluminum electrolysis includes the following steps: S1, pulverizing the electrolyte containing lithium; S2, uniformly mixing an additive with the electrolyte powder to obtain a mixture, wherein the additive is one or more selected from the group consisting of an oxide of an alkali metal other than lithium, an oxo acid salt of an alkali metal other than lithium, and a halide of an alkali metal other than lithium; a molar ratio of a sum of alkali metal fluoride contained in the electrolyte, alkali metal fluoride directly added from the additive, and alkali metal fluoride to which the additive is converted under the high-temperature calcination condition in the mixture to aluminum fluoride is greater than 3; S3, calcining the mixture at a high temperature.

The present specification relates to a connecting material for a solid oxide fuel cell, comprising a conductive substrate; and a ceramic protective film provided on one surface of the conductive substrate, in which the ceramic protective film comprises an oxide represented by Formula 1, a manufacturing method thereof, and a solid oxide fuel cell comprising the same.