Abstract: Disclosed are a vanadia-titania aerogel catalyst having high specific surface area and porosity, a method of preparing the same and a method of completely oxidatively-decomposing a chlorinated aromatic compound using the catalyst under air condition. The vanadia-titania aerogel catalyst of the invention is an aerogel form having many porosities and a high specific surface area obtained by performing a supercritical drying of vanadia-titania wet gel, which is prepared by a sol-gel method, with carbon dioxide and then firing the dried vanadia-titania, with a micro porosity structure being maintained, consists of vanadia and titania wherein a content of the vanadia is 1˜15 wt % of an overall catalyst weight. In addition, according to the invention, the vanadia-titania aerogel catalyst may further comprise a manganese oxide of 1-5 wt % or a sulfur component of 0.0001-1 wt %.

Abstract: The present invention discloses a carbon-porous media composite electrode material, a composite electrode using the same and a preparation method thereof. The carbon-porous media composite electrode can be applied for a device such as a secondary battery, a capacitor or the like, or for preparing ultra pure water using a capacitive deionization process, purifying salty water or the like.

Abstract: An aerogel type platinum-ruthenium-carbon catalyst of microporous structure maintaining long-term high catalytic activity, suitable for a direct methanol fuel cell, is manufactured by a sol-gel process, and supercritical drying while maintaining a microporous structure. The catalyst contains 5 to 70% by weight of platinum and ruthenium, remainder carbon, the platinum and ruthenium atomic ratio being of 1/4 to 4/1. Metal salts and base catalyst are added to a solution of organic gel materials, a solution of basic amine is added to the first solution, and the pH of the resulting solution is adjusted forming a sol, the sol is aged at 40 to 90 for 1 to 20 days forming and stabilizing the gel, solvent is removed from the gel by supercritical drying, and finally the aerogel is carbonized in an inert atmosphere, followed by hydrogen reduction.

Abstract: Disclosed is an aerogel type platinum-ruthenium-carbon catalyst, maintaining a long-term high catalytic activity, manufactured by a sol-gel process and supercritical drying process, and a method for manufacturing the same. Also disclosed is a direct methanol fuel cell employing the aerogel type platinum-ruthenium-carbon catalyst as an anode catalyst.

Abstract: The present invention relates to a method of containing nickel into the alumina aerogel prepared by sol-gel method and supercritical drying and of preparing the nickel-alumina hybrid aerogel catalyst. The nickel-alumina catalyst prepared in the present invention has an excellent reactivity with a prolonged lifetime.

Abstract: The present invention relates to a method of containing nickel into the alumina aerogel prepared by sol-gel method and supercritical drying and of preparing the nickel-alumina hybrid aerogel catalyst. The nickel-alumina catalyst prepared in the present invention has an excellent reactivity with a prolonged lifetime.

Abstract: The present invention relates to a method of containing nickel into the alumina aerogel prepared by sol-gel method and supercritical drying and of preparing the nickel-alumina hybrid aerogel catalyst. The nickel-alumina catalyst prepared in the present invention has an excellent reactivity with a prolonged lifetime.

Abstract: A preparation of a Pb-substituted hydroxyapatite catalyst for oxidative coupling of methane represented by the formula Ca.sub.10-x pb.sub.x (PO.sub.4).sub.6 (OH).sub.2 wherein 0<X<10 or preferably 0<X<3, includes dissolving calcium nitrate tetrahydrate ?Ca(NO.sub.3).sub.2 4H.sub.2 O!, lead nitrate ?Pb(NO.sub.3).sub.2 ! and monobasic ammonium phosphate ?NH.sub.4 H.sub.2 PO.sub.4 ! in a distilled water at room temperature to have over 0.01M concentration and pH 9 and maintaining a resultant precipitate for 5 to 20 hours for aging and then calcining the resultant. A method for producing C.sub.2 compounds using the thusly produced catalyst includes reacting a mixed gas composed of methane, oxygen and helium in the presence of 5.about.20 g.multidot.min/L of the Pb-substituted hydroxyapatite catalyst according to the present invention, at a high temperature of at least 600.degree. C.