Abstract: Provide is a porous spherical silica useful as a polish and as a cosmetic material. The porous spherical silica is such that less impurities are contained therein, the particle size distribution thereof is narrow, the D50 thereof is within a predetermined range, and the pore volume thereof is within a predetermined range, the D50 thereof is 2 to 200 ?m, the D10/D90 thereof is at least 0.3, the pore volume thereof is 0.5 mL/g to 8 mL/g, the arithmetic mean value of the breaking compressive test forces of specimens of ten particles is 1.0×101 to 1.0×102 mN, and the alkali metal content thereof is at most 50 ppm. The porous spherical silica can be produced by forming a W/O emulsion using a fumed silica dispersion as an aqueous phase, and pH-adjusting or heating to gelate this emulsion, and thereafter collecting and drying the resultant.

Abstract: The present invention relates to an active pharmaceutical ingredient carrier and a production method of the same. The active pharmaceutical ingredient carrier includes silica having a volume of a pore with a pore radius of 1 to 100 nm determined by BJH method of 3.0 to 5.0 ml/g, and a peak of a pore radius of 10 to 50 nm determined by BJH method; and an active pharmaceutical ingredient carried by the silica.

Abstract: The present invention relates to an active pharmaceutical ingredient carrier and a production method of the same. The active pharmaceutical ingredient carrier includes silica having a volume of a pore with a pore radius of 1 to 100 nm determined by BJH method of 3.0 to 5.0 ml/g, and a peak of a pore radius of 10 to 50 nm determined by BJH method; and an active pharmaceutical ingredient carried by the silica.

Abstract: An aerogel with excellent thermal insulation performance, average particle size of 1 to 20 ?m and globular shape; and a method of manufacturing it efficiently, is provided. The aerogel has specific surface area by BET method of 400 to 1000 m2/g; pore volume and peak pore radius by BJH method of 3 to 8 mL/g and 10 to 30 nm, respectively; average particle size and average circularity by image analysis method of 1 to 20 ?m and no less than 0.8, respectively. The method includes the steps of: preparing an aqueous silica sol; dispersing the sol into a hydrophobic solvent, thereby forming a W/O emulsion; causing gelation of the sol, thereby converting the emulsion into a dispersion of a gel; replacing water in the gel with a solvent having a small surface tension; treating the gel with a hydrophobing agent; and removing the solvent used in the solvent replacement.

Abstract: The present invention provides a globular-shaped metal oxide powder with excellent thermal insulation performance and reduced bulk density, and a method of manufacture thereof, wherein the metal oxide powder has globular independent particles as the main component, and has BET specific surface area of 400 to 1000 m2/g, BJH pore volume of 2 to 8 mL/g, and oil absorption of no less than 250 mL/100g. The present invention also provides a method for manufacturing the hollow and globular shaped metal oxide powder including the step of forming an O/W/O emulsion.

Abstract: A process of making a chlorinated hydrocarbon through a thermal dehydrochlorination step in which an unsaturated compound represented by the following general formula (2) is obtained by thermally decomposing a saturated compound represented by the following general formula (1). CCl3—CCl2-mHm—CCl3-nHn??(1) CCl2?CCl2-mHm-1—CCl3-nHn??(2) (in the above formulas, m is 1 or 2, and n is an integer of 0 to 3.

Abstract: The present invention provides a globular-shaped metal oxide powder with excellent thermal insulation performance and reduced bulk density, and a method of manufacture thereof, wherein the metal oxide powder has globular independent particles as the main component, and has BET specific surface area of 400 to 1000 m2/g, BJH pore volume of 2 to 8 mL/g, and oil absorption of no less than 250 mL/100g. The present invention also provides a method for manufacturing the hollow and globular shaped metal oxide powder including the step of forming an O/W/O emulsion.

Abstract: An aerogel with excellent thermal insulation performance, average particle size of 1 to 20 ?m and globular shape; and a method of manufacturing it efficiently, is provided. The aerogel has specific surface area by BET method of 400 to 1000 m2/g; pore volume and peak pore radius by BJH method of 3 to 8 mL/g and 10 to 30 nm, respectively; average particle size and average circularity by image analysis method of 1 to 20 ?m and no less than 0.8, respectively. The method includes the steps of: preparing an aqueous silica sol; dispersing the sol into a hydrophobic solvent, thereby forming a W/O emulsion; causing gelation of the sol, thereby converting the emulsion into a dispersion of a gel; replacing water in the gel with a solvent having a small surface tension; treating the gel with a hydrophobing agent; and removing the solvent used in the solvent replacement.

Abstract: A process of making a chlorinated hydrocarbon through a thermal dehydrochlorination step in which an unsaturated compound represented by the following general formula (2) is obtained by thermally decomposing a saturated compound represented by the following general formula (1). CCl3—CCl2-mHm—CCl3-nHn??(1) CCl2?CCl2-mHm-1—CCl3-nHn??(2) (in the above formulas, m is 1 or 2, and n is an integer of 0 to 3.).

Abstract: A process of making a chlorinated hydrocarbon through a thermal dehydrochlorination step in which an unsaturated compound represented by the following general formula (2) is obtained by thermally decomposing a saturated compound represented by the following general formula (1). CCl3—CCl2-mHm—CCl3-nHn??(1) CCl2?CCl2-mHm-1—CCl3-nHn??(2) (in the above formulas, m is 1 or 2, and n is an integer of 0 to 3.

Abstract: A process of making a chlorinated hydrocarbon through a thermal dehydrochlorination step in which an unsaturated compound represented by the following general formula (2) is obtained by thermally decomposing a saturated compound represented by the following general formula (1). CCl3—CCl2-mHm—CCl3-nHn??(1) CCl2?CCl2-mHm-1—CCl3-nHn??(2) (in the above formulas, m is 1 or 2, and n is an integer of 0 to 3.